mcs/class/System.Configuration/System.Configuration/ConfigurationElement.cs

   1 //
   2 // System.Configuration.ConfigurationElement.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Lluis Sanchez Gual (lluis@novell.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  28 //
  29
  30 #if NET_2_0
  31 using System.Collections;
  32 using System.Xml;
  33 using System.Reflection;
  34 using System.IO;
  35 using System.ComponentModel;
  36
  37 namespace System.Configuration
  38 {
  39         public abstract class ConfigurationElement
  40         {
  41                 string rawXml;
  42                 bool modified;
  43                 ElementMap map;
  44                 ConfigurationPropertyCollection keyProps;
  45                 ConfigurationElementCollection defaultCollection;
  46                 bool readOnly;
  47                 ElementInformation elementInfo;
  48                 ConfigurationElementProperty elementProperty;
  49                 Configuration _configuration;
  50                 bool elementPresent;
  51
  52                 internal Configuration Configuration {
  53                         get { return _configuration; }
  54                         set { _configuration = value; }
  55                 }
  56
  57                 protected ConfigurationElement ()
  58                 {
  59                 }
  60
  61                 internal virtual void InitFromProperty (PropertyInformation propertyInfo)
  62                 {
  63                         elementInfo = new ElementInformation (this, propertyInfo);
  64                         Init ();
  65                 }
  66
  67                 public ElementInformation ElementInformation {
  68                         get {
  69                                 if (elementInfo == null)
  70                                         elementInfo = new ElementInformation (this, null);
  71                                 return elementInfo;
  72                         }
  73                 }
  74
  75                 internal string RawXml {
  76                         get { return rawXml; }
  77                         set {
  78                                 // FIXME: this hack is nasty. We should make
  79                                 // some refactory on the entire assembly.
  80                                 if (rawXml == null || value != null)
  81                                         rawXml = value;
  82                         }
  83                 }
  84
  85                 protected internal virtual void Init ()
  86                 {
  87                 }
  88
  89                 protected internal virtual ConfigurationElementProperty ElementProperty {
  90                         get {
  91                                 if (elementProperty == null)
  92                                         elementProperty = new ConfigurationElementProperty (ElementInformation.Validator);
  93                                 return elementProperty;
  94                         }
  95                 }
  96
  97                 [MonoTODO]
  98                 protected ContextInformation EvaluationContext {
  99                         get {
 100                                 if (Configuration != null)
 101                                         return Configuration.EvaluationContext;
 102                                 throw new NotImplementedException ();
 103                         }
 104                 }
 105
 106                 ConfigurationLockCollection lockAllAttributesExcept;
 107                 public ConfigurationLockCollection LockAllAttributesExcept {
 108                         get {
 109                                 if (lockAllAttributesExcept == null) {
 110                                         lockAllAttributesExcept = new ConfigurationLockCollection (this, ConfigurationLockType.Attribute | ConfigurationLockType.Exclude);
 111                                 }
 112
 113                                 return lockAllAttributesExcept;
 114                         }
 115                 }
 116
 117                 ConfigurationLockCollection lockAllElementsExcept;
 118                 public ConfigurationLockCollection LockAllElementsExcept {
 119                         get {
 120                                 if (lockAllElementsExcept == null) {
 121                                         lockAllElementsExcept = new ConfigurationLockCollection (this, ConfigurationLockType.Element | ConfigurationLockType.Exclude);
 122                                 }
 123
 124                                 return lockAllElementsExcept;
 125                         }
 126                 }
 127
 128                 ConfigurationLockCollection lockAttributes;
 129                 public ConfigurationLockCollection LockAttributes {
 130                         get {
 131                                 if (lockAttributes == null) {
 132                                         lockAttributes = new ConfigurationLockCollection (this, ConfigurationLockType.Attribute);
 133                                 }
 134
 135                                 return lockAttributes;
 136                         }
 137                 }
 138
 139                 ConfigurationLockCollection lockElements;
 140                 public ConfigurationLockCollection LockElements {
 141                         get {
 142                                 if (lockElements == null) {
 143                                         lockElements = new ConfigurationLockCollection (this, ConfigurationLockType.Element);
 144                                 }
 145
 146                                 return lockElements;
 147                         }
 148                 }
 149
 150                 bool lockItem;
 151                 public bool LockItem {
 152                         get { return lockItem; }
 153                         set { lockItem = value; }
 154                 }
 155
 156                 [MonoTODO]
 157                 protected virtual void ListErrors (IList list)
 158                 {
 159                         throw new NotImplementedException ();
 160                 }
 161
 162                 [MonoTODO]
 163                 protected void SetPropertyValue (ConfigurationProperty prop, object value, bool ignoreLocks)
 164                 {
 165                         try {
 166                                 /* XXX all i know for certain is that Validation happens here */
 167                                 prop.Validate (value);
 168
 169                                 /* XXX presumably the actual setting of the
 170                                  * property happens here instead of in the
 171                                  * set_Item code below, but that would mean
 172                                  * the Value needs to be stuffed in the
 173                                  * property, not the propertyinfo (or else the
 174                                  * property needs a ref to the property info
 175                                  * to correctly set the value). */
 176                         }
 177                         catch (Exception e) {
 178                                 throw new ConfigurationErrorsException (String.Format ("The value for the property '{0}' is not valid. The error is: {1}", prop.Name, e.Message), e);
 179                         }
 180                 }
 181
 182                 internal ConfigurationPropertyCollection GetKeyProperties ()
 183                 {
 184                         if (keyProps != null) return keyProps;
 185
 186                         ConfigurationPropertyCollection tmpkeyProps = new ConfigurationPropertyCollection ();
 187                                 foreach (ConfigurationProperty prop in Properties) {
 188                                         if (prop.IsKey)
 189                                         tmpkeyProps.Add (prop);
 190                                 }
 191
 192                         return keyProps = tmpkeyProps;
 193                 }
 194
 195                 internal ConfigurationElementCollection GetDefaultCollection ()
 196                 {
 197                         if (defaultCollection != null) return defaultCollection;
 198
 199                         ConfigurationProperty defaultCollectionProp = null;
 200
 201                         foreach (ConfigurationProperty prop in Properties) {
 202                                 if (prop.IsDefaultCollection) {
 203                                         defaultCollectionProp = prop;
 204                                         break;
 205                                 }
 206                         }
 207
 208                         if (defaultCollectionProp != null) {
 209                                 defaultCollection = this [defaultCollectionProp] as ConfigurationElementCollection;
 210                         }
 211
 212                         return defaultCollection;
 213                 }
 214
 215                 protected internal object this [ConfigurationProperty property] {
 216                         get { return this [property.Name]; }
 217                         set { this [property.Name] = value; }
 218                 }
 219
 220                 protected internal object this [string property_name] {
 221                         get {
 222                                 PropertyInformation pi = ElementInformation.Properties [property_name];
 223                                 if (pi == null)
 224                                         throw new InvalidOperationException ("Property '" + property_name + "' not found in configuration element");
 225
 226                                 return pi.Value;
 227                         }
 228
 229                         set {
 230                                 PropertyInformation pi = ElementInformation.Properties [property_name];
 231                                 if (pi == null)
 232                                         throw new InvalidOperationException ("Property '" + property_name + "' not found in configuration element");
 233
 234                                 SetPropertyValue (pi.Property, value, false);
 235
 236                                 pi.Value = value;
 237                                 modified = true;
 238                         }
 239                 }
 240
 241                 protected internal virtual ConfigurationPropertyCollection Properties {
 242                         get {
 243                                 if (map == null)
 244                                         map = ElementMap.GetMap (GetType());
 245                                 return map.Properties;
 246                         }
 247                 }
 248
 249                 public override bool Equals (object compareTo)
 250                 {
 251                         ConfigurationElement other = compareTo as ConfigurationElement;
 252                         if (other == null) return false;
 253                         if (GetType() != other.GetType()) return false;
 254
 255                         foreach (ConfigurationProperty prop in Properties) {
 256                                 if (!object.Equals (this [prop], other [prop]))
 257                                         return false;
 258                         }
 259                         return true;
 260                 }
 261
 262                 public override int GetHashCode ()
 263                 {
 264                         int code = 0;
 265                         object o;
 266
 267                         foreach (ConfigurationProperty prop in Properties) {
 268                                 o = this [prop];
 269                                 if (o == null)
 270                                         continue;
 271
 272                                 code += o.GetHashCode ();
 273                         }
 274
 275                         return code;
 276                 }
 277
 278                 internal virtual bool HasValues ()
 279                 {
 280                         foreach (PropertyInformation pi in ElementInformation.Properties)
 281                                 if (pi.ValueOrigin != PropertyValueOrigin.Default)
 282                                         return true;
 283
 284                         return false;
 285                 }
 286
 287                 internal virtual bool HasLocalModifications ()
 288                 {
 289                         foreach (PropertyInformation pi in ElementInformation.Properties)
 290                                 if (pi.ValueOrigin == PropertyValueOrigin.SetHere && pi.IsModified)
 291                                         return true;
 292
 293                         return false;
 294                 }
 295
 296                 protected internal virtual void DeserializeElement (XmlReader reader, bool serializeCollectionKey)
 297                 {
 298                         Hashtable readProps = new Hashtable ();
 299
 300                         reader.MoveToContent ();
 301                         elementPresent = true;
 302
 303                         while (reader.MoveToNextAttribute ())
 304                         {
 305                                 PropertyInformation prop = ElementInformation.Properties [reader.LocalName];
 306                                 if (prop == null || (serializeCollectionKey && !prop.IsKey)) {
 307                                         /* handle the built in ConfigurationElement attributes here */
 308                                         if (reader.LocalName == "lockAllAttributesExcept") {
 309                                                 LockAllAttributesExcept.SetFromList (reader.Value);
 310                                         }
 311                                         else if (reader.LocalName == "lockAllElementsExcept") {
 312                                                 LockAllElementsExcept.SetFromList (reader.Value);
 313                                         }
 314                                         else if (reader.LocalName == "lockAttributes") {
 315                                                 LockAttributes.SetFromList (reader.Value);
 316                                         }
 317                                         else if (reader.LocalName == "lockElements") {
 318                                                 LockElements.SetFromList (reader.Value);
 319                                         }
 320                                         else if (reader.LocalName == "lockItem") {
 321                                                 LockItem = (reader.Value.ToLowerInvariant () == "true");
 322                                         }
 323                                         else if (reader.LocalName == "xmlns") {
 324                                                 /* ignore */
 325                                         } else if (this is ConfigurationSection && reader.LocalName == "configSource") {
 326                                                 /* ignore */
 327                                         } else if (!OnDeserializeUnrecognizedAttribute (reader.LocalName, reader.Value))
 328                                                 throw new ConfigurationErrorsException ("Unrecognized attribute '" + reader.LocalName + "'.", reader);
 329
 330                                         continue;
 331                                 }
 332
 333                                 if (readProps.ContainsKey (prop))
 334                                         throw new ConfigurationErrorsException ("The attribute '" + prop.Name + "' may only appear once in this element.", reader);
 335
 336                                 string value = null;
 337                                 try {
 338                                         value = reader.Value;
 339                                         ValidateValue (prop.Property, value);
 340                                         prop.SetStringValue (value);
 341                                 } catch (ConfigurationErrorsException) {
 342                                         throw;
 343                                 } catch (ConfigurationException) {
 344                                         throw;
 345                                 } catch (Exception ex) {
 346                                         string msg = String.Format ("The value for the property '{0}' is not valid. The error is: {1}", prop.Name, ex.Message);
 347                                         throw new ConfigurationErrorsException (msg, reader);
 348                                 }
 349                                 readProps [prop] = prop.Name;
 350
 351                                 ConfigXmlTextReader _reader = reader as ConfigXmlTextReader;
 352
 353                                 prop.Source = _reader.Filename;
 354                                 prop.LineNumber = _reader.LineNumber;
 355                         }
 356
 357                         reader.MoveToElement ();
 358                         if (reader.IsEmptyElement) {
 359                                 reader.Skip ();
 360                         } else {
 361                                 int depth = reader.Depth;
 362
 363                                 reader.ReadStartElement ();
 364                                 reader.MoveToContent ();
 365
 366                                 do {
 367                                         if (reader.NodeType != XmlNodeType.Element) {
 368                                                 reader.Skip ();
 369                                                 continue;
 370                                         }
 371
 372                                         PropertyInformation prop = ElementInformation.Properties [reader.LocalName];
 373                                         if (prop == null || (serializeCollectionKey && !prop.IsKey)) {
 374                                                 if (!OnDeserializeUnrecognizedElement (reader.LocalName, reader)) {
 375                                                         if (prop == null) {
 376                                                                 ConfigurationElementCollection c = GetDefaultCollection ();
 377                                                                 if (c != null && c.OnDeserializeUnrecognizedElement (reader.LocalName, reader))
 378                                                                         continue;
 379                                                         }
 380                                                         throw new ConfigurationErrorsException ("Unrecognized element '" + reader.LocalName + "'.", reader);
 381                                                 }
 382                                                 continue;
 383                                         }
 384
 385                                         if (!prop.IsElement)
 386                                                 throw new ConfigurationErrorsException ("Property '" + prop.Name + "' is not a ConfigurationElement.");
 387
 388                                         if (readProps.Contains (prop))
 389                                                 throw new ConfigurationErrorsException ("The element <" + prop.Name + "> may only appear once in this section.", reader);
 390
 391                                         ConfigurationElement val = (ConfigurationElement) prop.Value;
 392                                         val.DeserializeElement (reader, serializeCollectionKey);
 393                                         readProps [prop] = prop.Name;
 394
 395                                         if(depth == reader.Depth)
 396                                                 reader.Read();
 397
 398                                 } while (depth < reader.Depth);
 399                         }
 400
 401                         modified = false;
 402
 403                         foreach (PropertyInformation prop in ElementInformation.Properties)
 404                                 if (!String.IsNullOrEmpty(prop.Name) && prop.IsRequired && !readProps.ContainsKey (prop)) {
 405                                         PropertyInformation p = ElementInformation.Properties [prop.Name];
 406                                         if (p == null) {
 407                                                 object val = OnRequiredPropertyNotFound (prop.Name);
 408                                                 if (!object.Equals (val, prop.DefaultValue)) {
 409                                                         prop.Value = val;
 410                                                         prop.IsModified = false;
 411                                                 }
 412                                         }
 413                                 }
 414
 415                         PostDeserialize ();
 416                 }
 417
 418                 protected virtual bool OnDeserializeUnrecognizedAttribute (string name, string value)
 419                 {
 420                         return false;
 421                 }
 422
 423                 protected virtual bool OnDeserializeUnrecognizedElement (string element, XmlReader reader)
 424                 {
 425                         return false;
 426                 }
 427
 428                 protected virtual object OnRequiredPropertyNotFound (string name)
 429                 {
 430                         throw new ConfigurationErrorsException ("Required attribute '" + name + "' not found.");
 431                 }
 432
 433                 protected virtual void PreSerialize (XmlWriter writer)
 434                 {
 435                 }
 436
 437                 protected virtual void PostDeserialize ()
 438                 {
 439                 }
 440
 441                 protected internal virtual void InitializeDefault ()
 442                 {
 443                 }
 444
 445                 protected internal virtual bool IsModified ()
 446                 {
 447                         return modified;
 448                 }
 449
 450                 protected internal virtual void SetReadOnly ()
 451                 {
 452                         readOnly = true;
 453                 }
 454
 455                 public virtual bool IsReadOnly ()
 456                 {
 457                         return readOnly;
 458                 }
 459
 460                 protected internal virtual void Reset (ConfigurationElement parentElement)
 461                 {
 462                         elementPresent = false;
 463
 464                         if (parentElement != null)
 465                                 ElementInformation.Reset (parentElement.ElementInformation);
 466                         else
 467                                 InitializeDefault ();
 468                 }
 469
 470                 protected internal virtual void ResetModified ()
 471                 {
 472                         modified = false;
 473                         foreach (PropertyInformation p in ElementInformation.Properties)
 474                                 p.IsModified = false;
 475                 }
 476
 477                 protected internal virtual bool SerializeElement (XmlWriter writer, bool serializeCollectionKey)
 478                 {
 479                         PreSerialize (writer);
 480
 481                         if (serializeCollectionKey) {
 482                                 ConfigurationPropertyCollection props = GetKeyProperties ();
 483                                 foreach (ConfigurationProperty prop in props)
 484                                         writer.WriteAttributeString (prop.Name, prop.ConvertToString (this[prop.Name]));
 485                                 return props.Count > 0;
 486                         }
 487
 488                         bool wroteData = false;
 489
 490                         foreach (PropertyInformation prop in ElementInformation.Properties)
 491                         {
 492                                 if (prop.IsElement || prop.ValueOrigin == PropertyValueOrigin.Default)
 493                                         continue;
 494
 495                                 if (!object.Equals (prop.Value, prop.DefaultValue)) {
 496                                         writer.WriteAttributeString (prop.Name, prop.GetStringValue ());
 497                                         wroteData = true;
 498                                 }
 499                         }
 500
 501                         foreach (PropertyInformation prop in ElementInformation.Properties)
 502                         {
 503                                 if (!prop.IsElement)
 504                                         continue;
 505
 506                                 ConfigurationElement val = (ConfigurationElement) prop.Value;
 507                                 if (val != null)
 508                                         wroteData = val.SerializeToXmlElement (writer, prop.Name) || wroteData;
 509                         }
 510                         return wroteData;
 511                 }
 512
 513                 protected internal virtual bool SerializeToXmlElement (
 514                                 XmlWriter writer, string elementName)
 515                 {
 516                         if (!HasValues ())
 517                                 return false;
 518
 519                         if (elementName != null && elementName != "")
 520                                 writer.WriteStartElement (elementName);
 521                         bool res = SerializeElement (writer, false);
 522                         if (elementName != null && elementName != "")
 523                                 writer.WriteEndElement ();
 524                         return res;
 525                 }
 526
 527                 protected internal virtual void Unmerge (
 528                                 ConfigurationElement source, ConfigurationElement parent,
 529                                 ConfigurationSaveMode updateMode)
 530                 {
 531                         if (parent != null && source.GetType() != parent.GetType())
 532                                 throw new ConfigurationErrorsException ("Can't unmerge two elements of different type");
 533
 534                         foreach (PropertyInformation prop in source.ElementInformation.Properties)
 535                         {
 536                                 if (prop.ValueOrigin == PropertyValueOrigin.Default)
 537                                         continue;
 538
 539                                 PropertyInformation unmergedProp = ElementInformation.Properties [prop.Name];
 540
 541                                 object sourceValue = prop.Value;
 542                                 if      (parent == null || !parent.HasValue (prop.Name)) {
 543                                         unmergedProp.Value = sourceValue;
 544                                         continue;
 545                                 }
 546                                 else if (sourceValue != null) {
 547                                         object parentValue = parent [prop.Name];
 548                                         if (prop.IsElement) {
 549                                                 if (parentValue != null) {
 550                                                         ConfigurationElement copy = (ConfigurationElement) unmergedProp.Value;
 551                                                         copy.Unmerge ((ConfigurationElement) sourceValue, (ConfigurationElement) parentValue, updateMode);
 552                                                 }
 553                                                 else
 554                                                         unmergedProp.Value = sourceValue;
 555                                         }
 556                                         else {
 557                                                 if (!object.Equals (sourceValue, parentValue) ||
 558                                                         (updateMode == ConfigurationSaveMode.Full) ||
 559                                                         (updateMode == ConfigurationSaveMode.Modified && prop.ValueOrigin == PropertyValueOrigin.SetHere))
 560                                                         unmergedProp.Value = sourceValue;
 561                                         }
 562                                 }
 563                         }
 564                 }
 565
 566                 internal bool HasValue (string propName)
 567                 {
 568                         PropertyInformation info = ElementInformation.Properties [propName];
 569                         return info != null && info.ValueOrigin != PropertyValueOrigin.Default;
 570                 }
 571
 572                 internal bool IsReadFromConfig (string propName)
 573                 {
 574                         PropertyInformation info = ElementInformation.Properties [propName];
 575                         return info != null && info.ValueOrigin == PropertyValueOrigin.SetHere;
 576                 }
 577
 578                 internal bool IsElementPresent
 579                 {
 580                         get {   return elementPresent;  }
 581                 }
 582
 583                 void ValidateValue (ConfigurationProperty p, string value)
 584                 {
 585                         ConfigurationValidatorBase validator;
 586                         if (p == null || (validator = p.Validator) == null)
 587                                 return;
 588
 589                         if (!validator.CanValidate (p.Type))
 590                                 throw new ConfigurationErrorsException (
 591                                         String.Format ("Validator does not support type {0}", p.Type));
 592                         validator.Validate (p.ConvertFromString (value));
 593                 }
 594         }
 595
 596         internal class ElementMap
 597         {
 598 #if TARGET_JVM
 599                 const string elementMapsKey = "ElementMap_elementMaps";
 600                 static Hashtable elementMaps
 601                 {
 602                         get
 603                         {
 604                                 Hashtable tbl = (Hashtable) AppDomain.CurrentDomain.GetData (elementMapsKey);
 605                                 if (tbl == null) {
 606                                         lock (typeof (ElementMap)) {
 607                                                 tbl = (Hashtable) AppDomain.CurrentDomain.GetData (elementMapsKey);
 608                                                 if (tbl == null) {
 609                                                         tbl = Hashtable.Synchronized (new Hashtable ());
 610                                                         AppDomain.CurrentDomain.SetData (elementMapsKey, tbl);
 611                                                 }
 612                                         }
 613                                 }
 614                                 return tbl;
 615                         }
 616                 }
 617 #else
 618                 static readonly Hashtable elementMaps = Hashtable.Synchronized (new Hashtable ());
 619 #endif
 620
 621                 readonly ConfigurationPropertyCollection properties;
 622                 readonly ConfigurationCollectionAttribute collectionAttribute;
 623
 624                 public static ElementMap GetMap (Type t)
 625                 {
 626                         ElementMap map = elementMaps [t] as ElementMap;
 627                         if (map != null) return map;
 628                         map = new ElementMap (t);
 629                         elementMaps [t] = map;
 630                         return map;
 631                 }
 632
 633                 public ElementMap (Type t)
 634                 {
 635                         properties = new ConfigurationPropertyCollection ();
 636
 637                         collectionAttribute = Attribute.GetCustomAttribute (t, typeof(ConfigurationCollectionAttribute)) as ConfigurationCollectionAttribute;
 638
 639                         PropertyInfo[] props = t.GetProperties (BindingFlags.Public|BindingFlags.NonPublic|BindingFlags.Static|BindingFlags.Instance);
 640                         foreach (PropertyInfo prop in props)
 641                         {
 642                                 ConfigurationPropertyAttribute at = Attribute.GetCustomAttribute (prop, typeof(ConfigurationPropertyAttribute)) as ConfigurationPropertyAttribute;
 643                                 if (at == null) continue;
 644                                 string name = at.Name != null ? at.Name : prop.Name;
 645
 646                                 ConfigurationValidatorAttribute validatorAttr = Attribute.GetCustomAttribute (prop, typeof (ConfigurationValidatorAttribute)) as ConfigurationValidatorAttribute;
 647                                 ConfigurationValidatorBase validator = validatorAttr != null ? validatorAttr.ValidatorInstance : null;
 648
 649                                 TypeConverterAttribute convertAttr = (TypeConverterAttribute) Attribute.GetCustomAttribute (prop, typeof (TypeConverterAttribute));
 650                                 TypeConverter converter = convertAttr != null ? (TypeConverter) Activator.CreateInstance (Type.GetType (convertAttr.ConverterTypeName), true) : null;
 651                                 ConfigurationProperty cp = new ConfigurationProperty (name, prop.PropertyType, at.DefaultValue, converter, validator, at.Options);
 652
 653                                 cp.CollectionAttribute = Attribute.GetCustomAttribute (prop, typeof(ConfigurationCollectionAttribute)) as ConfigurationCollectionAttribute;
 654                                 properties.Add (cp);
 655                         }
 656                 }
 657
 658                 public ConfigurationCollectionAttribute CollectionAttribute
 659                 {
 660                         get { return collectionAttribute; }
 661                 }
 662
 663                 public bool HasProperties
 664                 {
 665                         get { return properties.Count > 0; }
 666                 }
 667
 668                 public ConfigurationPropertyCollection Properties
 669                 {
 670                         get {
 671                                 return properties;
 672                         }
 673                 }
 674         }
 675 }
 676
 677 #endif