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UIElement3D.AddHandler Method (RoutedEvent, Delegate)

.NET Framework 4.5

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)

Syntax

C++

public void AddHandler(
	RoutedEvent routedEvent,
	Delegate handler
)

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)

Remarks

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.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5 SP1, 3.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference

UIElement3D Class

AddHandler Overload

System.Windows Namespace

Other Resources

Routed Events Overview

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