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

   1 //
   2 // System.Web.UI.WebControls.CompareValidator
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@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 using System.Globalization;
  30 using System.ComponentModel;
  31 using System.Security.Permissions;
  32
  33 namespace System.Web.UI.WebControls {
  34         // CAS
  35         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  36         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         // attributes
  38 #if NET_2_0
  39         [ToolboxData("<{0}:CompareValidator runat=\"server\" ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  40 #else
  41         [ToolboxData("<{0}:CompareValidator runat=server ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  42 #endif
  43         public class CompareValidator : BaseCompareValidator
  44         {
  45                 public CompareValidator ()
  46                 {
  47                 }
  48
  49                 protected override void AddAttributesToRender (HtmlTextWriter w)
  50                 {
  51                         if (RenderUplevel) {
  52                                 if (ControlToCompare != "")
  53                                         w.AddAttribute ("controltocompare", GetControlRenderID(ControlToCompare));
  54                                 if (ValueToCompare != "")
  55                                         w.AddAttribute ("valuetocompare", ValueToCompare);
  56                                 w.AddAttribute ("operator", Operator.ToString());
  57                                 w.AddAttribute("evaluationfunction", "CompareValidatorEvaluateIsValid");
  58                         }
  59
  60                         base.AddAttributesToRender (w);
  61                 }
  62
  63                 protected override bool ControlPropertiesValid ()
  64                 {
  65                         if ((this.Operator != ValidationCompareOperator.DataTypeCheck) && ControlToCompare.Length == 0 && !BaseCompareValidator.CanConvert (this.ValueToCompare, this.Type, this.CultureInvariantValues))
  66             {
  67                 throw new HttpException(
  68                     String.Format("Unable to convert the value: {0} as a {1}", ValueToCompare, Enum.GetName(typeof(ValidationDataType), this.Type)));
  69             }
  70
  71                         if (ControlToCompare.Length > 0) {
  72                                 if (string.CompareOrdinal (ControlToCompare, ControlToValidate) == 0)
  73                                         throw new HttpException (String.Format ("Control '{0}' cannot have the same value '{1}' for both ControlToValidate and ControlToCompare.", ID, ControlToCompare));
  74                                 CheckControlValidationProperty (ControlToCompare, "");
  75                         }
  76
  77                         return base.ControlPropertiesValid ();
  78                 }
  79
  80                 protected override bool EvaluateIsValid ()
  81                 {
  82                         string control_value;
  83
  84                         control_value = GetControlValidationValue (this.ControlToValidate);
  85                         if (control_value == null)
  86                                 return true;
  87                         control_value = control_value.Trim ();
  88                         if (control_value.Length == 0)
  89                                 return true;
  90
  91                         string compare;
  92                         /* ControlToCompare takes precendence, if it's set. */
  93                         compare = (ControlToCompare != "" ? GetControlValidationValue (ControlToCompare) : ValueToCompare);
  94
  95             return BaseCompareValidator.Compare (GetControlValidationValue (ControlToValidate), false,
  96                                 compare, this.CultureInvariantValues,
  97                                                             Operator, this.Type);
  98                 }
  99
 100                 [DefaultValue("")]
 101                 [TypeConverter(typeof(System.Web.UI.WebControls.ValidatedControlConverter))]
 102                 [WebSysDescription ("")]
 103                 [WebCategory ("Behavior")]
 104 #if NET_2_0
 105                 [Themeable (false)]
 106 #endif
 107                 public string ControlToCompare {
 108                         get { return ViewState.GetString ("ControlToCompare", String.Empty); }
 109                         set { ViewState["ControlToCompare"] = value; }
 110                 }
 111
 112                 [DefaultValue(ValidationCompareOperator.Equal)]
 113                 [WebSysDescription ("")]
 114                 [WebCategory ("Behavior")]
 115 #if NET_2_0
 116                 [Themeable (false)]
 117 #endif
 118                 public ValidationCompareOperator Operator {
 119                         get { return (ValidationCompareOperator)ViewState.GetInt ("Operator", (int)ValidationCompareOperator.Equal); }
 120                         set { ViewState ["Operator"] = (int)value; }
 121                 }
 122
 123 #if !NET_2_0
 124                 [Bindable(true)]
 125 #endif
 126                 [DefaultValue("")]
 127                 [WebSysDescription ("")]
 128                 [WebCategory ("Behavior")]
 129 #if NET_2_0
 130                 [Themeable (false)]
 131 #endif
 132                 public string ValueToCompare {
 133                         get { return ViewState.GetString ("ValueToCompare", String.Empty); }
 134                         set { ViewState ["ValueToCompare"] = value; }
 135                 }
 136         }
 137 }