ContextItemManager.Subscribe Method
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| Subscribe(Type, SubscribeContextCallback) |
When overridden in a derived class, adds an event callback that is invoked when a context item of the specified item type changes. |
| Subscribe<TContextItemType>(SubscribeContextCallback<TContextItemType>) |
Adds an event callback that is invoked when a context item of the specified item type changes. |
When overridden in a derived class, adds an event callback that is invoked when a context item of the specified item type changes.
public:
abstract void Subscribe(Type ^ contextItemType, System::Activities::Presentation::SubscribeContextCallback ^ callback);public abstract void Subscribe(Type contextItemType, System.Activities.Presentation.SubscribeContextCallback callback);abstract member Subscribe : Type * System.Activities.Presentation.SubscribeContextCallback -> unitPublic MustOverride Sub Subscribe (contextItemType As Type, callback As SubscribeContextCallback)Parameters
- contextItemType
- Type
The type of item you want to subscribe to.
- callback
- SubscribeContextCallback
The SubscribeContextCallback that is invoked when contextItemType changes.
Exceptions
contextItemType or callback is null.
Applies to
.NET Framework 4.8.1 และรุ่นอื่นๆ
| ผลิตภัณฑ์ | เวอร์ชัน |
|---|---|
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Adds an event callback that is invoked when a context item of the specified item type changes.
public:
generic <typename TContextItemType>
where TContextItemType : System::Activities::Presentation::ContextItem void Subscribe(System::Activities::Presentation::SubscribeContextCallback<TContextItemType> ^ callback);public void Subscribe<TContextItemType>(System.Activities.Presentation.SubscribeContextCallback<TContextItemType> callback) where TContextItemType : System.Activities.Presentation.ContextItem;member this.Subscribe : System.Activities.Presentation.SubscribeContextCallback<'ContextItemType (requires 'ContextItemType :> System.Activities.Presentation.ContextItem)> -> unit (requires 'ContextItemType :> System.Activities.Presentation.ContextItem)Public Sub Subscribe(Of TContextItemType As ContextItem) (callback As SubscribeContextCallback(Of TContextItemType))Type Parameters
- TContextItemType
The type of item you want to subscribe to.
Parameters
A SubscribeContextCallback<TContextItemType> that is invoked when the TContextItemType changes.
Exceptions
callback is null.
Applies to
.NET Framework 4.8.1 และรุ่นอื่นๆ
| ผลิตภัณฑ์ | เวอร์ชัน |
|---|---|
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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