public static void RemoveRoutedEventHandlers(UIElement element, RoutedEvent routedEvent) {
// Get the EventHandlersStore instance which holds event handlers for the specified element.
// The EventHandlersStore class is declared as internal.
var eventHandlersStoreProperty = typeof(UIElement).GetProperty(
"EventHandlersStore", BindingFlags.Instance | BindingFlags.NonPublic);
object eventHandlersStore = eventHandlersStoreProperty.GetValue(element, null);
if (eventHandlersStore == null) return;
// Invoke the GetRoutedEventHandlers method on the EventHandlersStore instance
// for getting an array of the subscribed event handlers.
var getRoutedEventHandlers = eventHandlersStore.GetType().GetMethod(
"GetRoutedEventHandlers", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
var routedEventHandlers = (RoutedEventHandlerInfo[])getRoutedEventHandlers.Invoke(
eventHandlersStore, new object[] { routedEvent });
// Iteratively remove all routed event handlers from the element.
foreach (var routedEventHandler in routedEventHandlers) {
element.RemoveHandler(routedEvent, routedEventHandler.Handler);
}
}
