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UIElement3D.AddHandler Method (RoutedEvent, Delegate)

Adds a routed event handler for a specified routed event, adding the handler to the handler collection on the current element.

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

'Declaration
Public Sub AddHandler ( _
	routedEvent As RoutedEvent, _
	handler As Delegate _
)

Parameters

routedEvent
Type: System.Windows.RoutedEvent
An identifier for the routed event to be handled.
handler
Type: System.Delegate
A reference to the handler implementation.

Implements

IInputElement.AddHandler(RoutedEvent, Delegate)

You can add the same handler for the same event multiple times without raising an exception. However, the handler is actually invoked multiple times when the event is handled. Therefore, consider how this behavior might have side effects that should be accounted for in your handler implementation.

You typically use this method to provide the implementation of the "add" accessor for the Microsoft .NET event access pattern of a custom routed event.

AddHandler is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

.NET Framework

Supported in: 4, 3.5 SP1, 3.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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