关于WPF使用MultiConverter控制Button状态的详细介绍

public class InvalidMultiValidationRuleToBooleanMultiConverter : IMultiValueConverter
  {
    #region IMultiValueConverter Members

    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
    {
      string[] paramlist = ((string)parameter).Split('|');
      if (paramlist == null || paramlist.Length <= 0)
      {
        throw new ArgumentNullException("parameter");
      }
      int length = paramlist.Length;

      IList boollist = new List();

      for (int i = 0; i       {
        switch (paramlist[i].ToLowerInvariant())
        {
          case "checknameexisted":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "directoryandfileexist":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "greaterthanzerointeger":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "numericnull":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "stringlength":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "stringnullorempty":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "ipaddress":
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
          case "objectnull":
          default:
            boollist.Add(ValidationRuleHelper.Validate(values[i]));
            break;
        }
      }

      bool result = boollist[0];
      for (int i = 1; i       {
        result = result & boollist[i];
      }

      return result;
    }

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
    {
      return null;
    }

    #endregion
  }