mcs/class/System.Web/System.Web.UI.WebControls/FormView.cs

   1 //
   2 // System.Web.UI.WebControls.FormView.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System;
  32 using System.Collections;
  33 using System.Collections.Specialized;
  34 using System.ComponentModel;
  35 using System.Web.UI;
  36 using System.Security.Permissions;
  37 using System.Text;
  38 using System.IO;
  39 using System.Reflection;
  40
  41 namespace System.Web.UI.WebControls
  42 {
  43         [SupportsEventValidation]
  44         [DesignerAttribute ("System.Web.UI.Design.WebControls.FormViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  45         [ControlValuePropertyAttribute ("SelectedValue")]
  46         [DefaultEventAttribute ("PageIndexChanging")]
  47         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  48         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  49         public class FormView: CompositeDataBoundControl, IDataItemContainer, INamingContainer, IPostBackEventHandler, IPostBackContainer
  50         {
  51                 object dataItem;
  52
  53                 Table table;
  54                 FormViewRow headerRow;
  55                 FormViewRow footerRow;
  56                 FormViewRow bottomPagerRow;
  57                 FormViewRow topPagerRow;
  58                 FormViewRow itemRow;
  59
  60                 IOrderedDictionary currentEditRowKeys;
  61                 IOrderedDictionary currentEditNewValues;
  62                 IOrderedDictionary currentEditOldValues;
  63
  64                 ITemplate pagerTemplate;
  65                 ITemplate emptyDataTemplate;
  66                 ITemplate headerTemplate;
  67                 ITemplate footerTemplate;
  68                 ITemplate editItemTemplate;
  69                 ITemplate insertItemTemplate;
  70                 ITemplate itemTemplate;
  71
  72                 PropertyDescriptor[] cachedKeyProperties;
  73                 readonly string[] emptyKeys = new string[0];
  74
  75                 // View state
  76                 PagerSettings pagerSettings;
  77
  78                 TableItemStyle editRowStyle;
  79                 TableItemStyle insertRowStyle;
  80                 TableItemStyle emptyDataRowStyle;
  81                 TableItemStyle footerStyle;
  82                 TableItemStyle headerStyle;
  83                 TableItemStyle pagerStyle;
  84                 TableItemStyle rowStyle;
  85
  86                 IOrderedDictionary _keyTable;
  87                 DataKey key;
  88                 DataKey oldEditValues;
  89
  90                 private static readonly object PageIndexChangedEvent = new object();
  91                 private static readonly object PageIndexChangingEvent = new object();
  92                 private static readonly object ItemCommandEvent = new object();
  93                 private static readonly object ItemCreatedEvent = new object();
  94                 private static readonly object ItemDeletedEvent = new object();
  95                 private static readonly object ItemDeletingEvent = new object();
  96                 private static readonly object ItemInsertedEvent = new object();
  97                 private static readonly object ItemInsertingEvent = new object();
  98                 private static readonly object ModeChangingEvent = new object();
  99                 private static readonly object ModeChangedEvent = new object();
 100                 private static readonly object ItemUpdatedEvent = new object();
 101                 private static readonly object ItemUpdatingEvent = new object();
 102
 103                 // Control state
 104                 int pageIndex;
 105                 FormViewMode currentMode = FormViewMode.ReadOnly;
 106                 bool hasCurrentMode;
 107                 int pageCount;
 108
 109                 public event EventHandler PageIndexChanged {
 110                         add { Events.AddHandler (PageIndexChangedEvent, value); }
 111                         remove { Events.RemoveHandler (PageIndexChangedEvent, value); }
 112                 }
 113
 114                 public event FormViewPageEventHandler PageIndexChanging {
 115                         add { Events.AddHandler (PageIndexChangingEvent, value); }
 116                         remove { Events.RemoveHandler (PageIndexChangingEvent, value); }
 117                 }
 118
 119                 public event FormViewCommandEventHandler ItemCommand {
 120                         add { Events.AddHandler (ItemCommandEvent, value); }
 121                         remove { Events.RemoveHandler (ItemCommandEvent, value); }
 122                 }
 123
 124                 public event EventHandler ItemCreated {
 125                         add { Events.AddHandler (ItemCreatedEvent, value); }
 126                         remove { Events.RemoveHandler (ItemCreatedEvent, value); }
 127                 }
 128
 129                 public event FormViewDeletedEventHandler ItemDeleted {
 130                         add { Events.AddHandler (ItemDeletedEvent, value); }
 131                         remove { Events.RemoveHandler (ItemDeletedEvent, value); }
 132                 }
 133
 134                 public event FormViewDeleteEventHandler ItemDeleting {
 135                         add { Events.AddHandler (ItemDeletingEvent, value); }
 136                         remove { Events.RemoveHandler (ItemDeletingEvent, value); }
 137                 }
 138
 139                 public event FormViewInsertedEventHandler ItemInserted {
 140                         add { Events.AddHandler (ItemInsertedEvent, value); }
 141                         remove { Events.RemoveHandler (ItemInsertedEvent, value); }
 142                 }
 143
 144                 public event FormViewInsertEventHandler ItemInserting {
 145                         add { Events.AddHandler (ItemInsertingEvent, value); }
 146                         remove { Events.RemoveHandler (ItemInsertingEvent, value); }
 147                 }
 148
 149                 public event FormViewModeEventHandler ModeChanging {
 150                         add { Events.AddHandler (ModeChangingEvent, value); }
 151                         remove { Events.RemoveHandler (ModeChangingEvent, value); }
 152                 }
 153
 154                 public event EventHandler ModeChanged {
 155                         add { Events.AddHandler (ModeChangedEvent, value); }
 156                         remove { Events.RemoveHandler (ModeChangedEvent, value); }
 157                 }
 158
 159                 public event FormViewUpdatedEventHandler ItemUpdated {
 160                         add { Events.AddHandler (ItemUpdatedEvent, value); }
 161                         remove { Events.RemoveHandler (ItemUpdatedEvent, value); }
 162                 }
 163
 164                 public event FormViewUpdateEventHandler ItemUpdating {
 165                         add { Events.AddHandler (ItemUpdatingEvent, value); }
 166                         remove { Events.RemoveHandler (ItemUpdatingEvent, value); }
 167                 }
 168
 169                 protected virtual void OnPageIndexChanged (EventArgs e)
 170                 {
 171                         if (Events != null) {
 172                                 EventHandler eh = (EventHandler) Events [PageIndexChangedEvent];
 173                                 if (eh != null) eh (this, e);
 174                         }
 175                 }
 176
 177                 protected virtual void OnPageIndexChanging (FormViewPageEventArgs e)
 178                 {
 179                         if (Events != null) {
 180                                 FormViewPageEventHandler eh = (FormViewPageEventHandler) Events [PageIndexChangingEvent];
 181                                 if (eh != null) eh (this, e);
 182                         }
 183                 }
 184
 185                 protected virtual void OnItemCommand (FormViewCommandEventArgs e)
 186                 {
 187                         if (Events != null) {
 188                                 FormViewCommandEventHandler eh = (FormViewCommandEventHandler) Events [ItemCommandEvent];
 189                                 if (eh != null) eh (this, e);
 190                         }
 191                 }
 192
 193                 protected virtual void OnItemCreated (EventArgs e)
 194                 {
 195                         if (Events != null) {
 196                                 EventHandler eh = (EventHandler) Events [ItemCreatedEvent];
 197                                 if (eh != null) eh (this, e);
 198                         }
 199                 }
 200
 201                 protected virtual void OnItemDeleted (FormViewDeletedEventArgs e)
 202                 {
 203                         if (Events != null) {
 204                                 FormViewDeletedEventHandler eh = (FormViewDeletedEventHandler) Events [ItemDeletedEvent];
 205                                 if (eh != null) eh (this, e);
 206                         }
 207                 }
 208
 209                 protected virtual void OnItemInserted (FormViewInsertedEventArgs e)
 210                 {
 211                         if (Events != null) {
 212                                 FormViewInsertedEventHandler eh = (FormViewInsertedEventHandler) Events [ItemInsertedEvent];
 213                                 if (eh != null) eh (this, e);
 214                         }
 215                 }
 216
 217                 protected virtual void OnItemInserting (FormViewInsertEventArgs e)
 218                 {
 219                         if (Events != null) {
 220                                 FormViewInsertEventHandler eh = (FormViewInsertEventHandler) Events [ItemInsertingEvent];
 221                                 if (eh != null) eh (this, e);
 222                         }
 223                 }
 224
 225                 protected virtual void OnItemDeleting (FormViewDeleteEventArgs e)
 226                 {
 227                         if (Events != null) {
 228                                 FormViewDeleteEventHandler eh = (FormViewDeleteEventHandler) Events [ItemDeletingEvent];
 229                                 if (eh != null) eh (this, e);
 230                         }
 231                 }
 232
 233                 protected virtual void OnModeChanged (EventArgs e)
 234                 {
 235                         if (Events != null) {
 236                                 EventHandler eh = (EventHandler) Events [ModeChangedEvent];
 237                                 if (eh != null) eh (this, e);
 238                         }
 239                 }
 240
 241                 protected virtual void OnModeChanging (FormViewModeEventArgs e)
 242                 {
 243                         if (Events != null) {
 244                                 FormViewModeEventHandler eh = (FormViewModeEventHandler) Events [ModeChangingEvent];
 245                                 if (eh != null) eh (this, e);
 246                         }
 247                 }
 248
 249                 protected virtual void OnItemUpdated (FormViewUpdatedEventArgs e)
 250                 {
 251                         if (Events != null) {
 252                                 FormViewUpdatedEventHandler eh = (FormViewUpdatedEventHandler) Events [ItemUpdatedEvent];
 253                                 if (eh != null) eh (this, e);
 254                         }
 255                 }
 256
 257                 protected virtual void OnItemUpdating (FormViewUpdateEventArgs e)
 258                 {
 259                         if (Events != null) {
 260                                 FormViewUpdateEventHandler eh = (FormViewUpdateEventHandler) Events [ItemUpdatingEvent];
 261                                 if (eh != null) eh (this, e);
 262                         }
 263                 }
 264
 265
 266                 [WebCategoryAttribute ("Paging")]
 267                 [DefaultValueAttribute (false)]
 268                 public virtual bool AllowPaging {
 269                         get {
 270                                 object ob = ViewState ["AllowPaging"];
 271                                 if (ob != null) return (bool) ob;
 272                                 return false;
 273                         }
 274                         set {
 275                                 ViewState ["AllowPaging"] = value;
 276                                 RequireBinding ();
 277                         }
 278                 }
 279
 280                 [UrlPropertyAttribute]
 281                 [WebCategoryAttribute ("Appearance")]
 282                 [DefaultValueAttribute ("")]
 283                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
 284                 public virtual string BackImageUrl {
 285                         get {
 286                                 if (ControlStyleCreated)
 287                                         return ((TableStyle) ControlStyle).BackImageUrl;
 288                                 return String.Empty;
 289                         }
 290                         set {
 291                                 ((TableStyle) ControlStyle).BackImageUrl = value;
 292                         }
 293                 }
 294
 295                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 296                 [BrowsableAttribute (false)]
 297                 public virtual FormViewRow BottomPagerRow {
 298                         get {
 299                                 EnsureChildControls ();
 300                                 return bottomPagerRow;
 301                         }
 302                 }
 303
 304                 [WebCategoryAttribute ("Accessibility")]
 305                 [DefaultValueAttribute ("")]
 306                 [LocalizableAttribute (true)]
 307                 public virtual string Caption {
 308                         get {
 309                                 object ob = ViewState ["Caption"];
 310                                 if (ob != null) return (string) ob;
 311                                 return string.Empty;
 312                         }
 313                         set {
 314                                 ViewState ["Caption"] = value;
 315                                 RequireBinding ();
 316                         }
 317                 }
 318
 319                 [WebCategoryAttribute ("Accessibility")]
 320                 [DefaultValueAttribute (TableCaptionAlign.NotSet)]
 321                 public virtual TableCaptionAlign CaptionAlign
 322                 {
 323                         get {
 324                                 object o = ViewState ["CaptionAlign"];
 325                                 if(o != null) return (TableCaptionAlign) o;
 326                                 return TableCaptionAlign.NotSet;
 327                         }
 328                         set {
 329                                 ViewState ["CaptionAlign"] = value;
 330                                 RequireBinding ();
 331                         }
 332                 }
 333
 334                 [WebCategoryAttribute ("Layout")]
 335                 [DefaultValueAttribute (-1)]
 336                 public virtual int CellPadding
 337                 {
 338                         get {
 339                                 if (ControlStyleCreated)
 340                                         return ((TableStyle) ControlStyle).CellPadding;
 341                                 return -1;
 342                         }
 343                         set {
 344                                 ((TableStyle) ControlStyle).CellPadding = value;
 345                         }
 346                 }
 347
 348                 [WebCategoryAttribute ("Layout")]
 349                 [DefaultValueAttribute (0)]
 350                 public virtual int CellSpacing
 351                 {
 352                         get {
 353                                 if (ControlStyleCreated)
 354                                         return ((TableStyle) ControlStyle).CellSpacing;
 355                                 return 0;
 356                         }
 357                         set {
 358                                 ((TableStyle) ControlStyle).CellSpacing = value;
 359                         }
 360                 }
 361
 362                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 363                 [BrowsableAttribute (false)]
 364                 public FormViewMode CurrentMode {
 365                         get {
 366                                 return hasCurrentMode ? currentMode : DefaultMode;
 367                         }
 368                         private set {
 369                                 hasCurrentMode = true;
 370                                 currentMode = value;
 371                         }
 372                 }
 373
 374                 FormViewMode defaultMode;
 375
 376                 [DefaultValueAttribute (FormViewMode.ReadOnly)]
 377                 [WebCategoryAttribute ("Behavior")]
 378                 public virtual FormViewMode DefaultMode {
 379                         get {
 380                                 return defaultMode;
 381                         }
 382                         set {
 383                                 defaultMode = value;
 384                                 RequireBinding ();
 385                         }
 386                 }
 387
 388                 string[] dataKeyNames;
 389                 [DefaultValueAttribute (null)]
 390                 [WebCategoryAttribute ("Data")]
 391                 [TypeConverter (typeof(StringArrayConverter))]
 392                 [EditorAttribute ("System.Web.UI.Design.WebControls.DataFieldEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
 393                 public virtual string[] DataKeyNames
 394                 {
 395                         get {
 396                                 if (dataKeyNames == null)
 397                                         return emptyKeys;
 398                                 return dataKeyNames;
 399                         }
 400                         set {
 401                                 dataKeyNames = value;
 402                                 RequireBinding ();
 403                         }
 404                 }
 405
 406                 IOrderedDictionary KeyTable {
 407                         get {
 408                                 if (_keyTable == null) {
 409                                         _keyTable = new OrderedDictionary (DataKeyNames.Length);
 410                                 }
 411                                 return _keyTable;
 412                         }
 413                 }
 414
 415                 [BrowsableAttribute (false)]
 416                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 417                 public virtual DataKey DataKey {
 418                         get {
 419                                 if (key == null) {
 420                                         key= new DataKey (KeyTable);
 421                                 }
 422                                 return key;
 423                         }
 424                 }
 425
 426                 DataKey OldEditValues {
 427                         get {
 428                                 if (oldEditValues == null) {
 429                                         oldEditValues = new DataKey (new OrderedDictionary ());
 430                                 }
 431                                 return oldEditValues;
 432                         }
 433                 }
 434
 435                 [DefaultValue (null)]
 436                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 437                 [PersistenceMode (PersistenceMode.InnerProperty)]
 438                 [Browsable (false)]
 439                 public virtual ITemplate EditItemTemplate {
 440                         get { return editItemTemplate; }
 441                         set { editItemTemplate = value; RequireBinding (); }
 442                 }
 443
 444                 [WebCategoryAttribute ("Styles")]
 445                 [PersistenceMode (PersistenceMode.InnerProperty)]
 446                 [NotifyParentProperty (true)]
 447                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 448                 [DefaultValueAttribute (null)]
 449                 public TableItemStyle EditRowStyle {
 450                         get {
 451                                 if (editRowStyle == null) {
 452                                         editRowStyle = new TableItemStyle ();
 453                                         if (IsTrackingViewState)
 454                                                 editRowStyle.TrackViewState();
 455                                 }
 456                                 return editRowStyle;
 457                         }
 458                 }
 459
 460                 [WebCategoryAttribute ("Styles")]
 461                 [PersistenceMode (PersistenceMode.InnerProperty)]
 462                 [NotifyParentProperty (true)]
 463                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 464                 [DefaultValueAttribute (null)]
 465                 public TableItemStyle EmptyDataRowStyle {
 466                         get {
 467                                 if (emptyDataRowStyle == null) {
 468                                         emptyDataRowStyle = new TableItemStyle ();
 469                                         if (IsTrackingViewState)
 470                                                 emptyDataRowStyle.TrackViewState();
 471                                 }
 472                                 return emptyDataRowStyle;
 473                         }
 474                 }
 475
 476                 [DefaultValue (null)]
 477                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 478                 [PersistenceMode (PersistenceMode.InnerProperty)]
 479                 [Browsable (false)]
 480                 public virtual ITemplate EmptyDataTemplate {
 481                         get { return emptyDataTemplate; }
 482                         set { emptyDataTemplate = value; RequireBinding (); }
 483                 }
 484
 485                 [LocalizableAttribute (true)]
 486                 [WebCategoryAttribute ("Appearance")]
 487                 [DefaultValueAttribute ("")]
 488                 public virtual string EmptyDataText {
 489                         get {
 490                                 object ob = ViewState ["EmptyDataText"];
 491                                 if (ob != null) return (string) ob;
 492                                 return string.Empty;
 493                         }
 494                         set {
 495                                 ViewState ["EmptyDataText"] = value;
 496                                 RequireBinding ();
 497                         }
 498                 }
 499
 500                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 501                 [BrowsableAttribute (false)]
 502                 public virtual FormViewRow FooterRow {
 503                         get {
 504                                 EnsureChildControls ();
 505                                 return footerRow;
 506                         }
 507                 }
 508
 509                 [DefaultValue (null)]
 510                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 511                 [PersistenceMode (PersistenceMode.InnerProperty)]
 512                 [Browsable (false)]
 513                 public virtual ITemplate FooterTemplate {
 514                         get { return footerTemplate; }
 515                         set { footerTemplate = value; RequireBinding (); }
 516                 }
 517
 518                 [LocalizableAttribute (true)]
 519                 [WebCategoryAttribute ("Appearance")]
 520                 [DefaultValueAttribute ("")]
 521                 public virtual string FooterText {
 522                         get {
 523                                 object ob = ViewState ["FooterText"];
 524                                 if (ob != null) return (string) ob;
 525                                 return string.Empty;
 526                         }
 527                         set {
 528                                 ViewState ["FooterText"] = value;
 529                                 RequireBinding ();
 530                         }
 531                 }
 532
 533                 [WebCategoryAttribute ("Styles")]
 534                 [PersistenceMode (PersistenceMode.InnerProperty)]
 535                 [NotifyParentProperty (true)]
 536                 [DefaultValue (null)]
 537                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 538                 public TableItemStyle FooterStyle {
 539                         get {
 540                                 if (footerStyle == null) {
 541                                         footerStyle = new TableItemStyle ();
 542                                         if (IsTrackingViewState)
 543                                                 footerStyle.TrackViewState();
 544                                 }
 545                                 return footerStyle;
 546                         }
 547                 }
 548
 549                 [WebCategoryAttribute ("Appearance")]
 550                 [DefaultValueAttribute (GridLines.None)]
 551                 public virtual GridLines GridLines {
 552                         get {
 553                                 if (ControlStyleCreated)
 554                                         return ((TableStyle) ControlStyle).GridLines;
 555                                 return GridLines.None;
 556                         }
 557                         set {
 558                                 ((TableStyle) ControlStyle).GridLines = value;
 559                         }
 560                 }
 561
 562                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 563                 [BrowsableAttribute (false)]
 564                 public virtual FormViewRow HeaderRow {
 565                         get {
 566                                 EnsureChildControls ();
 567                                 return headerRow;
 568                         }
 569                 }
 570
 571                 [WebCategoryAttribute ("Styles")]
 572                 [PersistenceMode (PersistenceMode.InnerProperty)]
 573                 [NotifyParentProperty (true)]
 574                 [DefaultValue (null)]
 575                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 576                 public TableItemStyle HeaderStyle {
 577                         get {
 578                                 if (headerStyle == null) {
 579                                         headerStyle = new TableItemStyle ();
 580                                         if (IsTrackingViewState)
 581                                                 headerStyle.TrackViewState();
 582                                 }
 583                                 return headerStyle;
 584                         }
 585                 }
 586
 587                 [DefaultValue (null)]
 588                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 589                 [PersistenceMode (PersistenceMode.InnerProperty)]
 590                 [Browsable (false)]
 591                 public virtual ITemplate HeaderTemplate {
 592                         get { return headerTemplate; }
 593                         set { headerTemplate = value; RequireBinding (); }
 594                 }
 595
 596                 [LocalizableAttribute (true)]
 597                 [WebCategoryAttribute ("Appearance")]
 598                 [DefaultValueAttribute ("")]
 599                 public virtual string HeaderText {
 600                         get {
 601                                 object ob = ViewState ["HeaderText"];
 602                                 if (ob != null) return (string) ob;
 603                                 return string.Empty;
 604                         }
 605                         set {
 606                                 ViewState ["HeaderText"] = value;
 607                                 RequireBinding ();
 608                         }
 609                 }
 610
 611                 [Category ("Layout")]
 612                 [DefaultValueAttribute (HorizontalAlign.NotSet)]
 613                 public virtual HorizontalAlign HorizontalAlign {
 614                         get {
 615                                 if (ControlStyleCreated)
 616                                         return ((TableStyle) ControlStyle).HorizontalAlign;
 617                                 return HorizontalAlign.NotSet;
 618                         }
 619                         set {
 620                                 ((TableStyle) ControlStyle).HorizontalAlign = value;
 621                         }
 622                 }
 623
 624                 [DefaultValue (null)]
 625                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 626                 [PersistenceMode (PersistenceMode.InnerProperty)]
 627                 [Browsable (false)]
 628                 public virtual ITemplate InsertItemTemplate {
 629                         get { return insertItemTemplate; }
 630                         set { insertItemTemplate = value; RequireBinding (); }
 631                 }
 632
 633                 [WebCategoryAttribute ("Styles")]
 634                 [PersistenceMode (PersistenceMode.InnerProperty)]
 635                 [NotifyParentProperty (true)]
 636                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 637                 [DefaultValueAttribute (null)]
 638                 public TableItemStyle InsertRowStyle {
 639                         get {
 640                                 if (insertRowStyle == null) {
 641                                         insertRowStyle = new TableItemStyle ();
 642                                         if (IsTrackingViewState)
 643                                                 insertRowStyle.TrackViewState();
 644                                 }
 645                                 return insertRowStyle;
 646                         }
 647                 }
 648
 649                 [DefaultValue (null)]
 650                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 651                 [PersistenceMode (PersistenceMode.InnerProperty)]
 652                 [Browsable (false)]
 653                 public virtual ITemplate ItemTemplate {
 654                         get { return itemTemplate; }
 655                         set { itemTemplate = value; RequireBinding (); }
 656                 }
 657
 658                 [BrowsableAttribute (false)]
 659                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 660                 public virtual int PageCount {
 661                         get {
 662                                 return pageCount;
 663                         }
 664                 }
 665
 666                 [WebCategoryAttribute ("Paging")]
 667                 [BindableAttribute (true, BindingDirection.OneWay)]
 668                 [DefaultValueAttribute (0)]
 669                 public virtual int PageIndex {
 670                         get {
 671                                 return pageIndex;
 672                         }
 673                         set {
 674                                 if (value < 0)
 675                                         throw new ArgumentOutOfRangeException ("PageIndex must be non-negative");
 676                                 if (pageIndex == value)
 677                                         return;
 678                                 pageIndex = value;
 679                                 RequireBinding ();
 680                         }
 681                 }
 682
 683                 [WebCategoryAttribute ("Paging")]
 684                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Content)]
 685                 [NotifyParentPropertyAttribute (true)]
 686                 [PersistenceModeAttribute (PersistenceMode.InnerProperty)]
 687                 public virtual PagerSettings PagerSettings {
 688                         get {
 689                                 if (pagerSettings == null) {
 690                                         pagerSettings = new PagerSettings (this);
 691                                         if (IsTrackingViewState)
 692                                                 ((IStateManager)pagerSettings).TrackViewState ();
 693                                 }
 694                                 return pagerSettings;
 695                         }
 696                 }
 697
 698                 [WebCategoryAttribute ("Styles")]
 699                 [PersistenceMode (PersistenceMode.InnerProperty)]
 700                 [NotifyParentProperty (true)]
 701                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 702                 public TableItemStyle PagerStyle {
 703                         get {
 704                                 if (pagerStyle == null) {
 705                                         pagerStyle = new TableItemStyle ();
 706                                         if (IsTrackingViewState)
 707                                                 pagerStyle.TrackViewState();
 708                                 }
 709                                 return pagerStyle;
 710                         }
 711                 }
 712
 713
 714                 [DefaultValue (null)]
 715                 /* DataControlPagerCell isnt specified in the docs */
 716                 //[TemplateContainer (typeof(DataControlPagerCell), BindingDirection.OneWay)]
 717                 [PersistenceMode (PersistenceMode.InnerProperty)]
 718                 [Browsable (false)]
 719                 public virtual ITemplate PagerTemplate {
 720                         get { return pagerTemplate; }
 721                         set { pagerTemplate = value; RequireBinding (); }
 722                 }
 723
 724                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 725                 [BrowsableAttribute (false)]
 726                 public virtual FormViewRow Row {
 727                         get {
 728                                 EnsureChildControls ();
 729                                 return itemRow;
 730                         }
 731                 }
 732
 733                 [WebCategoryAttribute ("Styles")]
 734                 [PersistenceMode (PersistenceMode.InnerProperty)]
 735                 [NotifyParentProperty (true)]
 736                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 737                 [DefaultValue (null)]
 738                 public TableItemStyle RowStyle {
 739                         get {
 740                                 if (rowStyle == null) {
 741                                         rowStyle = new TableItemStyle ();
 742                                         if (IsTrackingViewState)
 743                                                 rowStyle.TrackViewState();
 744                                 }
 745                                 return rowStyle;
 746                         }
 747                 }
 748
 749                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 750                 [BrowsableAttribute (false)]
 751                 public object SelectedValue {
 752                         get { return DataKey.Value; }
 753                 }
 754
 755                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 756                 [BrowsableAttribute (false)]
 757                 public virtual FormViewRow TopPagerRow {
 758                         get {
 759                                 EnsureChildControls ();
 760                                 return topPagerRow;
 761                         }
 762                 }
 763
 764                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 765                 [BrowsableAttribute (false)]
 766                 public virtual object DataItem {
 767                         get {
 768                                 EnsureDataBound ();
 769                                 return dataItem;
 770                         }
 771                 }
 772
 773                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 774                 [BrowsableAttribute (false)]
 775                 public int DataItemCount {
 776                         get { return PageCount; }
 777                 }
 778
 779                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 780                 [BrowsableAttribute (false)]
 781                 public virtual int DataItemIndex {
 782                         get { return PageIndex; }
 783                 }
 784
 785                 int IDataItemContainer.DataItemIndex {
 786                         get { return DataItemIndex; }
 787                 }
 788
 789                 int IDataItemContainer.DisplayIndex {
 790                         get { return PageIndex; }
 791                 }
 792
 793                 public virtual bool IsBindableType (Type type)
 794                 {
 795                         return type.IsPrimitive || type == typeof (string) || type == typeof (DateTime) || type == typeof (Guid) || type == typeof (Decimal);
 796                 }
 797
 798                 protected override DataSourceSelectArguments CreateDataSourceSelectArguments ()
 799                 {
 800                         DataSourceSelectArguments arg = new DataSourceSelectArguments ();
 801                         DataSourceView view = GetData ();
 802                         if (AllowPaging && view.CanPage) {
 803                                 arg.StartRowIndex = PageIndex;
 804                                 if (view.CanRetrieveTotalRowCount) {
 805                                         arg.RetrieveTotalRowCount = true;
 806                                         arg.MaximumRows = 1;
 807                                 }
 808                                 else {
 809                                         arg.MaximumRows = -1;
 810                                 }
 811                         }
 812                         return arg;
 813                 }
 814
 815                 protected virtual FormViewRow CreateRow (int rowIndex, DataControlRowType rowType, DataControlRowState rowState)
 816                 {
 817                         FormViewRow row = new FormViewRow (rowIndex, rowType, rowState);
 818                         OnItemCreated (EventArgs.Empty);
 819                         return row;
 820                 }
 821
 822                 void RequireBinding ()
 823                 {
 824                         if (Initialized) {
 825                                 RequiresDataBinding = true;
 826                         }
 827                 }
 828
 829                 protected virtual Table CreateTable ()
 830                 {
 831                         return new ContainedTable (this);
 832                 }
 833
 834                 protected override void EnsureDataBound ()
 835                 {
 836                         base.EnsureDataBound ();
 837                 }
 838
 839                 protected override Style CreateControlStyle ()
 840                 {
 841                         TableStyle style = new TableStyle (ViewState);
 842                         style.CellSpacing = 0;
 843                         return style;
 844                 }
 845
 846                 protected override int CreateChildControls (IEnumerable data, bool dataBinding)
 847                 {
 848                         PagedDataSource dataSource = new PagedDataSource ();
 849                         dataSource.DataSource = data;
 850                         dataSource.AllowPaging = AllowPaging;
 851                         dataSource.PageSize = 1;
 852                         dataSource.CurrentPageIndex = PageIndex;
 853
 854                         if (dataBinding && CurrentMode != FormViewMode.Insert) {
 855                                 DataSourceView view = GetData ();
 856                                 if (view != null && view.CanPage) {
 857                                         dataSource.AllowServerPaging = true;
 858                                         if (SelectArguments.RetrieveTotalRowCount)
 859                                                 dataSource.VirtualCount = SelectArguments.TotalRowCount;
 860                                 }
 861                         }
 862
 863                         pageCount = dataSource.DataSourceCount;
 864                         bool showPager = AllowPaging && (pageCount > 1);
 865
 866                         Controls.Clear ();
 867                         table = CreateTable ();
 868                         Controls.Add (table);
 869
 870                         // Gets the current data item
 871
 872                         IEnumerator e = dataSource.GetEnumerator ();
 873                         dataItem = null;
 874
 875                         if (AllowPaging) {
 876                                 if (e.MoveNext ())
 877                                         dataItem = e.Current;
 878                         }
 879                         else
 880                         for (int page = 0; e.MoveNext (); page++ )
 881                                 if (page == PageIndex)
 882                                         dataItem = e.Current;
 883
 884                         // Main table creation
 885
 886                         if (HeaderText.Length != 0 || headerTemplate != null) {
 887                                 headerRow = CreateRow (-1, DataControlRowType.Header, DataControlRowState.Normal);
 888                                 InitializeRow (headerRow);
 889                                 table.Rows.Add (headerRow);
 890                         }
 891
 892                         if (showPager && PagerSettings.Position == PagerPosition.Top || PagerSettings.Position == PagerPosition.TopAndBottom) {
 893                                 topPagerRow = CreateRow (-1, DataControlRowType.Pager, DataControlRowState.Normal);
 894                                 InitializePager (topPagerRow, dataSource);
 895                                 table.Rows.Add (topPagerRow);
 896                         }
 897
 898                         if (pageCount > 0) {
 899                                 DataControlRowState rstate = GetRowState ();
 900                                 itemRow = CreateRow (0, DataControlRowType.DataRow, rstate);
 901                                 InitializeRow (itemRow);
 902                                 table.Rows.Add (itemRow);
 903                         } else {
 904                                 switch (CurrentMode) {
 905                                 case FormViewMode.Edit:
 906                                         itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Edit);
 907                                         break;
 908                                 case FormViewMode.Insert:
 909                                         itemRow = CreateRow (-1, DataControlRowType.DataRow, DataControlRowState.Insert);
 910                                         break;
 911                                 default:
 912                                         itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal);
 913                                         break;
 914                                 }
 915                                 table.Rows.Add (itemRow);
 916                                 InitializeRow (itemRow);
 917                         }
 918
 919                         if (FooterText.Length != 0 || footerTemplate != null) {
 920                                 footerRow = CreateRow (-1, DataControlRowType.Footer, DataControlRowState.Normal);
 921                                 InitializeRow (footerRow);
 922                                 table.Rows.Add (footerRow);
 923                         }
 924
 925                         if (showPager && PagerSettings.Position == PagerPosition.Bottom || PagerSettings.Position == PagerPosition.TopAndBottom) {
 926                                 bottomPagerRow = CreateRow (0, DataControlRowType.Pager, DataControlRowState.Normal);
 927                                 InitializePager (bottomPagerRow, dataSource);
 928                                 table.Rows.Add (bottomPagerRow);
 929                         }
 930
 931                         if (dataBinding)
 932                                 DataBind (false);
 933
 934                         return dataSource.DataSourceCount;
 935                 }
 936
 937                 DataControlRowState GetRowState ()
 938                 {
 939                         DataControlRowState rstate = DataControlRowState.Normal;
 940                         if (CurrentMode == FormViewMode.Edit) rstate |= DataControlRowState.Edit;
 941                         else if (CurrentMode == FormViewMode.Insert) rstate |= DataControlRowState.Insert;
 942                         return rstate;
 943                 }
 944
 945                 protected virtual void InitializePager (FormViewRow row, PagedDataSource dataSource)
 946                 {
 947                         TableCell cell = new TableCell ();
 948                         cell.ColumnSpan = 2;
 949
 950                         if (pagerTemplate != null)
 951                                 pagerTemplate.InstantiateIn (cell);
 952                         else
 953                                 cell.Controls.Add (PagerSettings.CreatePagerControl (dataSource.CurrentPageIndex, dataSource.PageCount));
 954
 955                         row.Cells.Add (cell);
 956                 }
 957
 958                 protected virtual void InitializeRow (FormViewRow row)
 959                 {
 960                         TableCell cell = new TableCell ();
 961
 962                         if (row.RowType == DataControlRowType.DataRow)
 963                         {
 964                                 if ((row.RowState & DataControlRowState.Edit) != 0) {
 965                                         if (editItemTemplate != null)
 966                                                 editItemTemplate.InstantiateIn (cell);
 967                                 } else if ((row.RowState & DataControlRowState.Insert) != 0) {
 968                                         if (insertItemTemplate != null)
 969                                                 insertItemTemplate.InstantiateIn (cell);
 970                                 } else if (itemTemplate != null)
 971                                         itemTemplate.InstantiateIn (cell);
 972                         }
 973                         else if (row.RowType == DataControlRowType.EmptyDataRow)
 974                         {
 975                                 if (emptyDataTemplate != null)
 976                                         emptyDataTemplate.InstantiateIn (cell);
 977                                 else
 978                                         cell.Text = EmptyDataText;
 979                         }
 980                         else if (row.RowType == DataControlRowType.Footer)
 981                         {
 982                                 if (footerTemplate != null)
 983                                         footerTemplate.InstantiateIn (cell);
 984                                 else
 985                                         cell.Text = FooterText;
 986                         }
 987                         else if (row.RowType == DataControlRowType.Header)
 988                         {
 989                                 if (headerTemplate != null)
 990                                         headerTemplate.InstantiateIn (cell);
 991                                 else
 992                                         cell.Text = HeaderText;
 993                         }
 994                         cell.ColumnSpan = 2;
 995                         row.Cells.Add (cell);
 996                 }
 997
 998                 void FillRowDataKey (object dataItem)
 999                 {
1000                         KeyTable.Clear ();
1001
1002                         if (cachedKeyProperties == null) {
1003                                 PropertyDescriptorCollection props = TypeDescriptor.GetProperties (dataItem);
1004                                 cachedKeyProperties = new PropertyDescriptor [DataKeyNames.Length];
1005                                 for (int n=0; n<DataKeyNames.Length; n++) {
1006                                         PropertyDescriptor p = props [DataKeyNames[n]];
1007                                         if (p == null)
1008                                                 new InvalidOperationException ("Property '" + DataKeyNames[n] + "' not found in object of type " + dataItem.GetType());
1009                                         cachedKeyProperties [n] = p;
1010                                 }
1011                         }
1012                         foreach (PropertyDescriptor p in cachedKeyProperties)
1013                                 KeyTable [p.Name] = p.GetValue (dataItem);
1014                 }
1015
1016                 IOrderedDictionary GetRowValues (bool includePrimaryKey)
1017                 {
1018                         OrderedDictionary dic = new OrderedDictionary ();
1019                         ExtractRowValues (dic, includePrimaryKey);
1020                         return dic;
1021                 }
1022
1023                 protected virtual void ExtractRowValues (IOrderedDictionary fieldValues, bool includeKeys)
1024                 {
1025                         if (Row == null)
1026                                 return;
1027
1028                         DataControlRowState rowState = Row.RowState;
1029                         IBindableTemplate bt;
1030
1031                         if ((rowState & DataControlRowState.Insert) != 0)
1032                                 bt = insertItemTemplate as IBindableTemplate;
1033                         else if ((rowState & DataControlRowState.Edit) != 0)
1034                                 bt = editItemTemplate as IBindableTemplate;
1035                         else
1036                                 return;
1037
1038                         if (bt != null) {
1039                                 IOrderedDictionary values = bt.ExtractValues (Row.Cells [0]);
1040                                 foreach (DictionaryEntry e in values) {
1041                                         if (includeKeys || Array.IndexOf (DataKeyNames, e.Key) == -1)
1042                                                 fieldValues [e.Key] = e.Value;
1043                                 }
1044                         }
1045                 }
1046
1047                 protected override HtmlTextWriterTag TagKey {
1048                         get {
1049                                 return HtmlTextWriterTag.Table;
1050                         }
1051                 }
1052
1053                 public sealed override void DataBind ()
1054                 {
1055                         if (CurrentMode == FormViewMode.Insert) {
1056                                 RequiresDataBinding = false;
1057                                 PerformDataBinding (new object [] { null });
1058                                 return;
1059                         }
1060
1061                         cachedKeyProperties = null;
1062                         base.DataBind ();
1063
1064                         if (pageCount > 0) {
1065                                 if (CurrentMode == FormViewMode.Edit)
1066                                         oldEditValues = new DataKey (GetRowValues (true));
1067                                 FillRowDataKey (dataItem);
1068                                 key = new DataKey (KeyTable);
1069                         }
1070                 }
1071
1072                 protected internal override void PerformDataBinding (IEnumerable data)
1073                 {
1074                         base.PerformDataBinding (data);
1075                 }
1076
1077                 protected internal virtual void PrepareControlHierarchy ()
1078                 {
1079                         if (table == null)
1080                                 return;
1081
1082                         table.Caption = Caption;
1083                         table.CaptionAlign = CaptionAlign;
1084
1085                         foreach (FormViewRow row in table.Rows) {
1086                                 switch (row.RowType) {
1087                                 case DataControlRowType.Header:
1088                                         if (headerStyle != null && !headerStyle.IsEmpty)
1089                                                 row.ControlStyle.CopyFrom (headerStyle);
1090                                         break;
1091                                 case DataControlRowType.Footer:
1092                                         if (footerStyle != null && !footerStyle.IsEmpty)
1093                                                 row.ControlStyle.CopyFrom (footerStyle);
1094                                         break;
1095                                 case DataControlRowType.Pager:
1096                                         if (pagerStyle != null && !pagerStyle.IsEmpty)
1097                                                 row.ControlStyle.CopyFrom (pagerStyle);
1098                                         break;
1099                                 case DataControlRowType.EmptyDataRow:
1100                                         if (emptyDataRowStyle != null && !emptyDataRowStyle.IsEmpty)
1101                                                 row.ControlStyle.CopyFrom (emptyDataRowStyle);
1102                                         break;
1103                                 case DataControlRowType.DataRow:
1104                                         if (rowStyle != null && !rowStyle.IsEmpty)
1105                                                 row.ControlStyle.CopyFrom (rowStyle);
1106                                         if ((row.RowState & (DataControlRowState.Edit | DataControlRowState.Insert)) != 0 && editRowStyle != null && !editRowStyle.IsEmpty)
1107                                                 row.ControlStyle.CopyFrom (editRowStyle);
1108                                         if ((row.RowState & DataControlRowState.Insert) != 0 && insertRowStyle != null && !insertRowStyle.IsEmpty)
1109                                                 row.ControlStyle.CopyFrom (insertRowStyle);
1110                                         break;
1111                                 default:
1112                                         break;
1113                                 }
1114                         }
1115                 }
1116
1117                 protected internal override void OnInit (EventArgs e)
1118                 {
1119                         Page.RegisterRequiresControlState (this);
1120                         base.OnInit (e);
1121                 }
1122
1123                 protected override bool OnBubbleEvent (object source, EventArgs e)
1124                 {
1125                         FormViewCommandEventArgs args = e as FormViewCommandEventArgs;
1126                         if (args != null) {
1127                                 OnItemCommand (args);
1128                                 ProcessEvent (args.CommandName, args.CommandArgument as string);
1129                                 return true;
1130                         }
1131                         return base.OnBubbleEvent (source, e);
1132                 }
1133
1134                 void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
1135                 {
1136                         RaisePostBackEvent (eventArgument);
1137                 }
1138
1139                 protected virtual void RaisePostBackEvent (string eventArgument)
1140                 {
1141                         int i = eventArgument.IndexOf ('$');
1142                         if (i != -1)
1143                                 ProcessEvent (eventArgument.Substring (0, i), eventArgument.Substring (i + 1));
1144                         else
1145                                 ProcessEvent (eventArgument, null);
1146                 }
1147
1148                 void ProcessEvent (string eventName, string param)
1149                 {
1150                         switch (eventName)
1151                         {
1152                         case DataControlCommands.PageCommandName:
1153                                 int newIndex = -1;
1154                                 switch (param) {
1155                                 case DataControlCommands.FirstPageCommandArgument:
1156                                         newIndex = 0;
1157                                         break;
1158                                 case DataControlCommands.LastPageCommandArgument:
1159                                         newIndex = PageCount - 1;
1160                                         break;
1161                                 case DataControlCommands.NextPageCommandArgument:
1162                                         newIndex = PageIndex + 1;
1163                                         break;
1164                                 case DataControlCommands.PreviousPageCommandArgument:
1165                                         newIndex = PageIndex - 1;
1166                                         break;
1167                                 default:
1168                                         int paramIndex = 0;
1169                                         int.TryParse (param, out paramIndex);
1170                                         newIndex = paramIndex - 1;
1171                                         break;
1172                                 }
1173                                 ShowPage (newIndex);
1174                                 break;
1175
1176                         case DataControlCommands.FirstPageCommandArgument:
1177                                 ShowPage (0);
1178                                 break;
1179
1180                         case DataControlCommands.LastPageCommandArgument:
1181                                 ShowPage (PageCount - 1);
1182                                 break;
1183
1184                         case DataControlCommands.NextPageCommandArgument:
1185                                 if (PageIndex < PageCount - 1)
1186                                         ShowPage (PageIndex + 1);
1187                                 break;
1188
1189                         case DataControlCommands.PreviousPageCommandArgument:
1190                                 if (PageIndex > 0)
1191                                         ShowPage (PageIndex - 1);
1192                                 break;
1193
1194                         case DataControlCommands.EditCommandName:
1195                                 ChangeMode (FormViewMode.Edit);
1196                                 break;
1197
1198                         case DataControlCommands.NewCommandName:
1199                                 ChangeMode (FormViewMode.Insert);
1200                                 break;
1201
1202                         case DataControlCommands.UpdateCommandName:
1203                                 UpdateItem (param, true);
1204                                 break;
1205
1206                         case DataControlCommands.CancelCommandName:
1207                                 CancelEdit ();
1208                                 break;
1209
1210                         case DataControlCommands.DeleteCommandName:
1211                                 DeleteItem ();
1212                                 break;
1213
1214                         case DataControlCommands.InsertCommandName:
1215                                 InsertItem (true);
1216                                 break;
1217                         }
1218                 }
1219
1220                 void ShowPage (int index)
1221                 {
1222                         FormViewPageEventArgs args = new FormViewPageEventArgs (index);
1223                         OnPageIndexChanging (args);
1224                         if (!args.Cancel) {
1225                                 int newIndex = args.NewPageIndex;
1226                                 if (newIndex < 0 || newIndex >= PageCount)
1227                                         return;
1228                                 EndRowEdit (false);
1229                                 PageIndex = newIndex;
1230                                 OnPageIndexChanged (EventArgs.Empty);
1231                         }
1232                 }
1233
1234                 public void ChangeMode (FormViewMode newMode)
1235                 {
1236                         FormViewModeEventArgs args = new FormViewModeEventArgs (newMode, false);
1237                         OnModeChanging (args);
1238                         if (!args.Cancel) {
1239                                 CurrentMode = args.NewMode;
1240                                 OnModeChanged (EventArgs.Empty);
1241                                 RequireBinding ();
1242                         }
1243                 }
1244
1245                 void CancelEdit ()
1246                 {
1247                         FormViewModeEventArgs args = new FormViewModeEventArgs (FormViewMode.ReadOnly, true);
1248                         OnModeChanging (args);
1249                         if (!args.Cancel) {
1250                                 EndRowEdit ();
1251                         }
1252                 }
1253
1254                 public virtual void UpdateItem (bool causesValidation)
1255                 {
1256                         UpdateItem (null, causesValidation);
1257                 }
1258
1259                 void UpdateItem (string param, bool causesValidation)
1260                 {
1261                         if (causesValidation && Page != null)
1262                                 Page.Validate ();
1263
1264                         if (currentMode != FormViewMode.Edit) throw new HttpException ("Must be in Edit mode");
1265
1266                         currentEditOldValues = OldEditValues.Values;
1267                         currentEditRowKeys = DataKey.Values;
1268                         currentEditNewValues = GetRowValues (false);
1269
1270                         FormViewUpdateEventArgs args = new FormViewUpdateEventArgs (param, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
1271                         OnItemUpdating (args);
1272                         if (!args.Cancel) {
1273                                 DataSourceView view = GetData ();
1274                                 if (view == null)
1275                                         throw new HttpException ("The DataSourceView associated to data bound control was null");
1276                                 if (view.CanUpdate)
1277                                         view.Update (currentEditRowKeys, currentEditNewValues, currentEditOldValues, new DataSourceViewOperationCallback (UpdateCallback));
1278                         }
1279                         else
1280                                 EndRowEdit ();
1281                 }
1282
1283                 bool UpdateCallback (int recordsAffected, Exception exception)
1284                 {
1285                         FormViewUpdatedEventArgs dargs = new FormViewUpdatedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
1286                         OnItemUpdated (dargs);
1287
1288                         if (!dargs.KeepInEditMode)
1289                                 EndRowEdit ();
1290
1291                         return dargs.ExceptionHandled;
1292                 }
1293
1294                 public virtual void InsertItem (bool causesValidation)
1295                 {
1296                         InsertItem (null, causesValidation);
1297                 }
1298
1299                 void InsertItem (string param, bool causesValidation)
1300                 {
1301                         if (causesValidation && Page != null)
1302                                 Page.Validate ();
1303
1304                         if (currentMode != FormViewMode.Insert) throw new HttpException ("Must be in Insert mode");
1305
1306                         currentEditNewValues = GetRowValues (true);
1307                         FormViewInsertEventArgs args = new FormViewInsertEventArgs (param, currentEditNewValues);
1308                         OnItemInserting (args);
1309                         if (!args.Cancel) {
1310                                 DataSourceView view = GetData ();
1311                                 if (view == null)
1312                                         throw new HttpException ("The DataSourceView associated to data bound control was null");
1313                                 if (view.CanInsert)
1314                                         view.Insert (currentEditNewValues, new DataSourceViewOperationCallback (InsertCallback));
1315                         }
1316                         else
1317                                 EndRowEdit ();
1318                 }
1319
1320                 bool InsertCallback (int recordsAffected, Exception exception)
1321                 {
1322                         FormViewInsertedEventArgs dargs = new FormViewInsertedEventArgs (recordsAffected, exception, currentEditNewValues);
1323                         OnItemInserted (dargs);
1324
1325                         if (!dargs.KeepInInsertMode)
1326                                 EndRowEdit ();
1327
1328                         return dargs.ExceptionHandled;
1329                 }
1330
1331                 public virtual void DeleteItem ()
1332                 {
1333                         currentEditRowKeys = DataKey.Values;
1334                         currentEditNewValues = GetRowValues (true);
1335
1336                         FormViewDeleteEventArgs args = new FormViewDeleteEventArgs (PageIndex, currentEditRowKeys, currentEditNewValues);
1337                         OnItemDeleting (args);
1338
1339                         if (!args.Cancel) {
1340                                 if (PageIndex > 0 && PageIndex == PageCount - 1)
1341                                         PageIndex--;
1342
1343                                 RequireBinding ();
1344
1345                                 DataSourceView view = GetData ();
1346                                 if (view != null && view.CanDelete)
1347                                         view.Delete (currentEditRowKeys, currentEditNewValues, new DataSourceViewOperationCallback (DeleteCallback));
1348                                 else {
1349                                         FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (0, null, currentEditRowKeys, currentEditNewValues);
1350                                         OnItemDeleted (dargs);
1351                                 }
1352                         }
1353                 }
1354
1355                 bool DeleteCallback (int recordsAffected, Exception exception)
1356                 {
1357                         FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditNewValues);
1358                         OnItemDeleted (dargs);
1359                         return dargs.ExceptionHandled;
1360                 }
1361
1362                 void EndRowEdit ()
1363                 {
1364                         EndRowEdit (true);
1365                 }
1366
1367                 void EndRowEdit (bool switchToDefaultMode)
1368                 {
1369                         if (switchToDefaultMode)
1370                                 ChangeMode (DefaultMode);
1371                         oldEditValues = new DataKey (new OrderedDictionary ());
1372                         currentEditRowKeys = null;
1373                         currentEditOldValues = null;
1374                         currentEditNewValues = null;
1375                         RequireBinding ();
1376                 }
1377
1378                 protected internal override void LoadControlState (object ob)
1379                 {
1380                         if (ob == null) return;
1381                         object[] state = (object[]) ob;
1382                         base.LoadControlState (state[0]);
1383                         pageIndex = (int) state[1];
1384                         pageCount = (int) state[2];
1385                         CurrentMode = (FormViewMode) state[3];
1386                         defaultMode = (FormViewMode) state[4];
1387                         dataKeyNames = (string[]) state[5];
1388                         if (state [6] != null)
1389                                 ((IStateManager) DataKey).LoadViewState (state [6]);
1390                         if (state [7] != null)
1391                                 ((IStateManager) OldEditValues).LoadViewState (state [7]);
1392                 }
1393
1394                 protected internal override object SaveControlState ()
1395                 {
1396                         object bstate = base.SaveControlState ();
1397                         return new object [] {
1398                                 bstate,
1399                                 pageIndex,
1400                                 pageCount,
1401                                 CurrentMode,
1402                                 defaultMode,
1403                                 dataKeyNames,
1404                                 (key == null ? null : ((IStateManager)key).SaveViewState()),
1405                                 (oldEditValues == null ? null : ((IStateManager) oldEditValues).SaveViewState ())
1406                         };
1407                 }
1408
1409                 protected override void TrackViewState()
1410                 {
1411                         base.TrackViewState();
1412                         if (pagerSettings != null) ((IStateManager)pagerSettings).TrackViewState();
1413                         if (footerStyle != null) ((IStateManager)footerStyle).TrackViewState();
1414                         if (headerStyle != null) ((IStateManager)headerStyle).TrackViewState();
1415                         if (pagerStyle != null) ((IStateManager)pagerStyle).TrackViewState();
1416                         if (rowStyle != null) ((IStateManager)rowStyle).TrackViewState();
1417                         if (editRowStyle != null) ((IStateManager)editRowStyle).TrackViewState();
1418                         if (insertRowStyle != null) ((IStateManager)insertRowStyle).TrackViewState();
1419                         if (emptyDataRowStyle != null) ((IStateManager)emptyDataRowStyle).TrackViewState();
1420                 }
1421
1422                 protected override object SaveViewState()
1423                 {
1424                         object[] states = new object [10];
1425                         states[0] = base.SaveViewState();
1426                         states[1] = (pagerSettings == null ? null : ((IStateManager)pagerSettings).SaveViewState());
1427                         states[2] = (footerStyle == null ? null : ((IStateManager)footerStyle).SaveViewState());
1428                         states[3] = (headerStyle == null ? null : ((IStateManager)headerStyle).SaveViewState());
1429                         states[4] = (pagerStyle == null ? null : ((IStateManager)pagerStyle).SaveViewState());
1430                         states[5] = (rowStyle == null ? null : ((IStateManager)rowStyle).SaveViewState());
1431                         states[6] = (insertRowStyle == null ? null : ((IStateManager)insertRowStyle).SaveViewState());
1432                         states[7] = (editRowStyle == null ? null : ((IStateManager)editRowStyle).SaveViewState());
1433                         states[8] = (emptyDataRowStyle == null ? null : ((IStateManager)emptyDataRowStyle).SaveViewState());
1434
1435                         for (int i = states.Length - 1; i >= 0; i--) {
1436                                 if (states [i] != null)
1437                                         return states;
1438                         }
1439
1440                         return null;
1441                 }
1442
1443                 protected override void LoadViewState (object savedState)
1444                 {
1445                         if (savedState == null) {
1446                                 base.LoadViewState (null);
1447                                 return;
1448                         }
1449
1450                         object [] states = (object []) savedState;
1451
1452                         base.LoadViewState (states[0]);
1453
1454                         if (states[1] != null) ((IStateManager)PagerSettings).LoadViewState (states[1]);
1455                         if (states[2] != null) ((IStateManager)FooterStyle).LoadViewState (states[2]);
1456                         if (states[3] != null) ((IStateManager)HeaderStyle).LoadViewState (states[3]);
1457                         if (states[4] != null) ((IStateManager)PagerStyle).LoadViewState (states[4]);
1458                         if (states[5] != null) ((IStateManager)RowStyle).LoadViewState (states[5]);
1459                         if (states[6] != null) ((IStateManager)InsertRowStyle).LoadViewState (states[6]);
1460                         if (states[7] != null) ((IStateManager)EditRowStyle).LoadViewState (states[7]);
1461                         if (states[8] != null) ((IStateManager)EmptyDataRowStyle).LoadViewState (states[8]);
1462                 }
1463
1464                 protected internal override void Render (HtmlTextWriter writer)
1465                 {
1466                         PrepareControlHierarchy ();
1467
1468                         if (table == null)
1469                                 return;
1470
1471                         table.Render (writer);
1472                 }
1473
1474                 PostBackOptions IPostBackContainer.GetPostBackOptions (IButtonControl control)
1475                 {
1476                         if (control == null)
1477                                 throw new ArgumentNullException ("control");
1478
1479                         if (control.CausesValidation)
1480                                 throw new InvalidOperationException ("A button that causes validation in FormView '" + ID + "' is attempting to use the container GridView as the post back target.  The button should either turn off validation or use itself as the post back container.");
1481
1482                         PostBackOptions options = new PostBackOptions (this);
1483                         options.Argument = control.CommandName + "$" + control.CommandArgument;
1484                         options.RequiresJavaScriptProtocol = true;
1485
1486                         return options;
1487                 }
1488
1489         }
1490 }
1491
1492 #endif