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

   1 //
   2 // System.Web.UI.WebControls.CompareValidator.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 using System;
  13 using System.Web;
  14 using System.Web.UI;
  15 using System.ComponentModel;
  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                 [DefaultValue (""), WebCategory ("Behavior")]
  29                 [TypeConverter (typeof (ValidatedControlConverter))]
  30                 [WebSysDescription ("The ID of a control that is compared.")]
  31                 public string ControlToCompare
  32                 {
  33                         get
  34                         {
  35                                 object o = ViewState["ControlToCompare"];
  36                                 if(o!=null)
  37                                         return (string)o;
  38                                 return String.Empty;
  39                         }
  40
  41                         set
  42                         {
  43                                 ViewState["ControlToCompare"] = value;
  44                         }
  45                 }
  46
  47                 [DefaultValue (typeof (ValidationCompareOperator), "Equal"), WebCategory ("Behavior")]
  48                 [WebSysDescription ("The operator that is used for comparison.")]
  49                 public ValidationCompareOperator Operator
  50                 {
  51                         get
  52                         {
  53                                 object o = ViewState["Operator"];
  54                                 if(o!=null)
  55                                         return (ValidationCompareOperator)o;
  56                                 return ValidationCompareOperator.Equal;
  57                         }
  58                         set
  59                         {
  60                                 if(!System.Enum.IsDefined(typeof(ValidationCompareOperator), value))
  61                                         throw new ArgumentException();
  62                                 ViewState["Operator"] = value;
  63                         }
  64                 }
  65
  66                 [DefaultValue (""), Bindable (true), WebCategory ("Behavior")]
  67                 [WebSysDescription ("The value that is compared to.")]
  68                 public string ValueToCompare
  69                 {
  70                         get
  71                         {
  72                                 object o = ViewState["ValueToCompare"];
  73                                 if(o!=null)
  74                                         return (string)o;
  75                                 return String.Empty;
  76                         }
  77                         set
  78                         {
  79                                 ViewState["ValueToCompare"] = value;
  80                         }
  81                 }
  82
  83                 protected override bool EvaluateIsValid ()
  84                 {
  85                         string ctrl = GetControlValidationValue (ControlToValidate);
  86                         if (ctrl == null || ctrl.Length == 0)
  87                                 return true;
  88
  89                         string cmp;
  90                         if (ControlToCompare.Length > 0) {
  91                                 cmp = GetControlValidationValue (ControlToCompare);
  92                         } else {
  93                                 cmp = ValueToCompare;
  94                         }
  95
  96                         return Compare (ctrl, cmp, Operator, Type);
  97                 }
  98         }
  99 }