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ServiceManager.RemoveCallback Method

A helper method that performs a Delegate.Remove operation, and unwraps delegates that are proxies to generic callbacks. You should use this method in your UnSubscribe() implementations.

Namespace:  System.Activities.Presentation
Assembly:  System.Activities.Presentation (in System.Activities.Presentation.dll)

protected static Delegate RemoveCallback(
	Delegate existing,
	Delegate toRemove


Type: System.Delegate
The existing delegate to remove the callback from.
Type: System.Delegate
The callback to remove.

Return Value

Type: System.Delegate
Returns Delegate, which is a new value to assign to the existing delegate.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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.