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UIElement3D.RemoveHandler Method

Removes the specified routed event handler from this element.

Namespace:  System.Windows
Assembly:  PresentationCore (in PresentationCore.dll)

public void RemoveHandler(
	RoutedEvent routedEvent,
	Delegate handler
)
You cannot use methods in XAML.

Parameters

routedEvent
Type: System.Windows.RoutedEvent

The identifier of the routed event for which the handler is attached.

handler
Type: System.Delegate

The specific handler implementation to remove from the event handler collection on this element.

Implements

IInputElement.RemoveHandler(RoutedEvent, Delegate)

The most common scenario for using this API is when you implement the common language runtime (CLR) "wrapper" event that is associated with a custom routed event, specifically when you implement the "remove" logic for handlers at the CLR level.

Calling this method has no effect if there were no handlers registered with criteria that match the input parameters for the method call.

If more than one handler is attached that matched the criteria, only the first handler in the event handler store is removed. This behavior is consistent with CLR behavior of the -= operator.

Neither routedEvent nor handler may be null. Attempting to provide either value as null will raise an exception.

This method ignores the handledEventsToo parameter information, which is provided if the handler was first added with the AddHandler(RoutedEvent, Delegate, Boolean) signature that enables handling of already-handled events. Either type of handler is removed.

RemoveHandler is introduced in the .NET Framework version 3.5. For more information, see .NET Framework 3.5 Architecture.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5 SP1, 3.0 SP1

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