private static void ShowAdorner(UIElement targetElement, bool show, bool retry = true)
{
if (targetElement == null)
{
return;
}
var adornerLayer = AdornerLayer.GetAdornerLayer(targetElement);
if (adornerLayer == null)
{
if (retry)
{
targetElement.Dispatcher.BeginInvoke(
DispatcherPriority.Loaded,
new Action(() => ShowAdorner(targetElement, show, false)));
}
return;
}
var adorner = targetElement.ReadLocalValue(AdornerProperty) as TemplatedAdorner;
if (show && adorner == null)
{
var validationTemplate = GetTemplate(targetElement);
if (validationTemplate != null)
{
adorner = new TemplatedAdorner(targetElement, validationTemplate);
adornerLayer.Add(adorner);
targetElement.SetValue(AdornerProperty, adorner);
}
}
else if (!show && adorner != null)
{
adorner.ClearChild();
adornerLayer.Remove(adorner);
targetElement.ClearValue(AdornerProperty);
}
}
private static void ShowAdorner(UIElement targetElement, bool show, bool retry = true)
{
if (targetElement == null)
{
return;
}
var adornerLayer = AdornerLayer.GetAdornerLayer(targetElement);
if (adornerLayer == null)
{
if (retry)
{
targetElement.Dispatcher.BeginInvoke(
DispatcherPriority.Loaded,
new Action(() => ShowAdorner(targetElement, show, false)));
}
return;
}
var adorner = targetElement.ReadLocalValue(AdornerProperty) as TemplatedAdorner;
if (show && adorner == null)
{
var validationTemplate = GetTemplate(targetElement);
if (validationTemplate != null)
{
adorner = new TemplatedAdorner(targetElement, validationTemplate);
adornerLayer.Add(adorner);
targetElement.SetValue(AdornerProperty, adorner);
}
}
else if (!show && adorner != null)
{
adorner.ClearChild();
adornerLayer.Remove(adorner);
targetElement.ClearValue(AdornerProperty);
}
}
