sdk/samples/WPFSamples/BindToMethod/csharp/invalidcharacterrule.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Text;
   4 using System.Windows.Data;
   5 using System.Globalization;
   6 using System.Windows.Controls;
   7 using System.Windows;
   8
   9 namespace ObjectDataProviderSample
  10 {
  11     class InvalidCharacterRule : ValidationRule
  12     {
  13         public InvalidCharacterRule()
  14         {
  15         }
  16
  17         public override ValidationResult Validate(object value, CultureInfo cultureInfo)
  18         {
  19           double myvalue = 0.00;
  20
  21           try
  22           {
  23             if (((string)value).Length > 0)
  24                 myvalue = Double.Parse((String)value);
  25           }
  26           catch (Exception e)
  27           {
  28             return new ValidationResult(false, "Illegal characters or " +e.Message);
  29           }
  30
  31           return new ValidationResult(true, null);
  32         }
  33
  34     }
  35 }