小编val*_*les的帖子

我正在为 XAML 中的各种控件编写验证规则。我想在运行时而不是在 XAML 中将validationRules 附加到控件。我正在考虑使用 Converters 。但任何想法/想法将是实现这一目标的更好方法。

示例代码：

 <TextBox Name="txtFirstName" >   <TextBox.Text>  <Binding Path="FirstName" ValidatesOnDataErrors="True" PropertyChanged" >
          <Binding.ValidationRules>
                <Binding Converter="{StaticResource validationConverter}"/>
           </Binding.ValidationRules>             
    </Binding>                                               

public class ValidationConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter,
        System.Globalization.CultureInfo culture)
    {
        Binding b = new Binding();
        b.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
        b.ValidatesOnDataErrors = true;
        b.NotifyOnValidationError = true;
        b.ValidationRules.Add(new RangeValidationRule { ErrorMessage = "Error shown from Converter ", MinValue = 10, MaxValue = 50 });
        return b;
    }

    public object ConvertBack(object value, Type …