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

   1 /**
   2 * Namespace: System.Web.UI.WebControls
   3 * Class:     CompareValidator
   4 *
   5 * Author:  Gaurav Vaish
   6 * Maintainer: gvaish@iitk.ac.in
   7 * Implementation: yes
   8 * Status:  80%
   9 *
  10 * (C) Gaurav Vaish (2001)
  11 */
  12
  13 using System;
  14 using System.Web;
  15 using System.Web.UI;
  16
  17 namespace System.Web.UI.WebControls
  18 {
  19         [ToolboxData("<{0}:CompareValidator runat=\"server\""
  20                      + "ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  21         public class CompareValidator: BaseCompareValidator
  22         {
  23                 public CompareValidator()
  24                 {
  25                         // Intitalize();
  26                 }
  27
  28                 public string ControlToCompare
  29                 {
  30                         get
  31                         {
  32                                 object o = ViewState["ControlToCompare"];
  33                                 if(o!=null)
  34                                         return (string)o;
  35                                 return String.Empty;
  36                         }
  37
  38                         set
  39                         {
  40                                 ViewState["ControlToCompare"] = value;
  41                         }
  42                 }
  43
  44                 public ValidationCompareOperator Operator
  45                 {
  46                         get
  47                         {
  48                                 object o = ViewState["Operator"];
  49                                 if(o!=null)
  50                                         return (ValidationCompareOperator)o;
  51                                 return ValidationCompareOperator.Equal;
  52                         }
  53                         set
  54                         {
  55                                 if(!System.Enum.IsDefined(typeof(ValidationCompareOperator), value))
  56                                         throw new ArgumentException();
  57                                 ViewState["Operator"] = value;
  58                         }
  59                 }
  60
  61                 public string ValueToCompare
  62                 {
  63                         get
  64                         {
  65                                 object o = ViewState["ValueToCompare"];
  66                                 if(o!=null)
  67                                         return (string)o;
  68                                 return String.Empty;
  69                         }
  70                         set
  71                         {
  72                                 ViewState["ValueToCompare"] = value;
  73                         }
  74                 }
  75
  76                 protected override bool EvaluateIsValid()
  77                 {
  78                         string ctrl = GetControlValidationValue(ControlToValidate);
  79                         if(ctrl != null && ctrl.Length > 0)
  80                         {
  81                                 string cmp = (ControlToCompare.Length > 0 ?
  82                                               ControlToCompare : ValueToCompare);
  83                                 return BaseCompareValidator.Compare(ctrl, cmp,
  84                                                                     Operator, Type);
  85                         }
  86                         return true;
  87                 }
  88         }
  89 }