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ContextItemManager.Subscribe<TContextItemType> Method (SubscribeContextCallback<TContextItemType>)

.NET Framework 4

.NET Framework 4.5

Adds an event callback that is invoked when a context item of the specified item type changes.

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

Syntax

C++

public void Subscribe<TContextItemType>(
	SubscribeContextCallback<TContextItemType> callback
)
where TContextItemType : ContextItem

Type Parameters

TContextItemType: The type of item you want to subscribe to.

Parameters

callback: Type: System.Activities.Presentation.SubscribeContextCallback<TContextItemType>
A SubscribeContextCallback<TContextItemType> that is invoked when contextItemType changes.

Exceptions

Exception	Condition
ArgumentNullException	contextItemType or callback is null.

Version Information

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Platforms

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.

Reference

ContextItemManager Class

Subscribe Overload

System.Activities.Presentation Namespace

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