public static void RemoveEventHandler(DependencyObject element, RoutedEvent routedEvent, Delegate handler)
{
UIElement uiElement = element as UIElement;
if (uiElement != null)
{
uiElement.RemoveHandler(routedEvent, handler);
}
else
{
ContentElement contentElement = element as ContentElement;
if (contentElement != null)
{
contentElement.RemoveHandler(routedEvent, handler);
}
else
{
UIElement3D uiElement3d = element as UIElement3D;
if (uiElement3d != null)
{
uiElement3d.RemoveHandler(routedEvent, handler);
}
}
}
}
public static void RemoveHandler(this DependencyObject element, RoutedEvent routedEvent, Delegate handler)
{
Debug.Assert(element != null, "Element must not be null");
Debug.Assert(routedEvent != null, "RoutedEvent must not be null");
UIElement uiElement = element as UIElement;
if (uiElement != null)
{
uiElement.RemoveHandler(routedEvent, handler);
}
else
{
ContentElement contentElement = element as ContentElement;
if (contentElement != null)
{
contentElement.RemoveHandler(routedEvent, handler);
}
else
{
UIElement3D uiElement3D = element as UIElement3D;
if (uiElement3D != null)
{
uiElement3D.RemoveHandler(routedEvent, handler);
}
}
}
}
/// <summary>
/// A static helper method that removes a handler for a routed event
/// from a target UIElement or ContentElement.
/// </summary>
/// <param name="element">UIElement or ContentElement that listens to the event</param>
/// <param name="routedEvent">Event that will no longer be handled</param>
/// <param name="handler">Event handler to be removed</param>
internal static void RemoveHandler(DependencyObject element, RoutedEvent routedEvent, Delegate handler)
{
UIElement uie = element as UIElement;
if (uie != null)
{
uie.RemoveHandler(routedEvent, handler);
}
else
{
ContentElement ce = element as ContentElement;
ce?.RemoveHandler(routedEvent, handler);
}
}
internal static void smethod_2(DependencyObject dependencyObject_0, RoutedEvent routedEvent_0, Delegate delegate_0)
{
UIElement element = dependencyObject_0 as UIElement;
if (element != null)
{
element.RemoveHandler(routedEvent_0, delegate_0);
}
else
{
ContentElement element2 = dependencyObject_0 as ContentElement;
if (element2 != null)
{
element2.RemoveHandler(routedEvent_0, delegate_0);
}
}
}