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ContextItemManager.Unsubscribe Method (Type, SubscribeContextCallback)

When overridden in a derived class, removes a subscription.

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

public abstract void Unsubscribe(
	Type contextItemType,
	SubscribeContextCallback callback


Type: System.Type
The type of context item to remove the callback from.
Type: System.Activities.Presentation.SubscribeContextCallback
The SubscribeContextCallback to remove.


callback is null.

.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.