は少し凝ったのですが、それは他の回答と同じことなので、私はそれが動作するはずだと思う:
public class DependencyPropertyCollection : List<DependencyProperty>
{ }
public static class ValidationUtil
{
public static readonly DependencyProperty ForceValidationProperty =
DependencyProperty.RegisterAttached("ForceValidation", typeof(DependencyPropertyCollection), typeof(ValidationUtil), new PropertyMetadata(OnForceValidationChanged));
private static void OnForceValidationChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
FrameworkElement element = (FrameworkElement)sender;
element.Loaded += OnElementLoaded;
}
private static void OnElementLoaded(object sender, RoutedEventArgs e)
{
FrameworkElement element = (FrameworkElement)sender;
element.Loaded -= OnElementLoaded;
foreach (DependencyProperty property in GetForceValidation(element))
element.GetBindingExpression(property).UpdateSource();
}
public static DependencyPropertyCollection GetForceValidation(DependencyObject obj)
{
return (DependencyPropertyCollection)obj.GetValue(ForceValidationProperty);
}
public static void SetForceValidation(DependencyObject obj, DependencyPropertyCollection value)
{
obj.SetValue(ForceValidationProperty, value);
}
}
そして、あなたはこのようにそれを使用します。
<TextBlock Text="{Binding Text}">
<local:ValidationUtil.ForceValidation>
<local:DependencyPropertyCollection>
<x:StaticExtension Member="TextBlock.TextProperty"/>
</local:DependencyPropertyCollection>
</local:ValidationUtil.ForceValidation>
</TextBlock>
コレクション内で、検証するバインディングを持つ各DependencyPropertyを指定します。