private static void ValidationScopeChanged(DependencyObject source, DependencyPropertyChangedEventArgs args)
{
ValidationScope oldScope = args.OldValue as ValidationScope;
if (oldScope != null)
{
oldScope.ScopeElement.BindingValidationError -= oldScope.ScopeElement_BindingValidationError;
oldScope.ScopeElement = null;
}
FrameworkElement scopeElement = source as FrameworkElement;
if (scopeElement == null)
{
throw new ArgumentException(string.Format(
"'{0}' is not a valid type.ValidationScope attached property can only be specified on types inheriting from FrameworkElement.",
source));
}
ValidationScope newScope = (ValidationScope)args.NewValue;
newScope.ScopeElement = scopeElement;
newScope.ScopeElement.BindingValidationError += newScope.ScopeElement_BindingValidationError;
}
public static void SetValidationScope(DependencyObject obj, ValidationScope value)
{
obj.SetValue(ValidationScopeProperty, value);
}
public static void SetValidationScope(DependencyObject obj, ValidationScope value)
{
obj.SetValue(ValidationScopeProperty, value);
}
