WeakEventManager<TEventSource, TEventArgs> Class
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Provides a type-safe WeakEventManager that enables you to specify the event handler to use for the "weak event listener" pattern. This class defines a type parameter for the source of the event and a type parameter for the event data that is used.
System.Windows.Threading.DispatcherObject
System.Windows.WeakEventManager
System.Windows.WeakEventManager<TEventSource, TEventArgs>
Namespace: System.Windows
Assembly: WindowsBase (in WindowsBase.dll)
The WeakEventManager<TEventSource, TEventArgs> type exposes the following members.
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Dispatcher | Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.) |
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Item | Gets or sets the data being stored for the specified source. (Inherited from WeakEventManager.) |
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ReadLock | Establishes a read-lock on the underlying data table, and returns an IDisposable. (Inherited from WeakEventManager.) |
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WriteLock | Establishes a write-lock on the underlying data table, and returns anIDisposable. (Inherited from WeakEventManager.) |
| Name | Description | |
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AddHandler | Adds the specified event handler to the specified event. |
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CheckAccess | Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.) |
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DeliverEvent | Delivers the event being managed to each listener. (Inherited from WeakEventManager.) |
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DeliverEventToList | Delivers the event being managed to each listener in the provided list. (Inherited from WeakEventManager.) |
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
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Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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NewListenerList | Returns a new object to contain listeners to an event. (Overrides WeakEventManager.NewListenerList().) |
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ProtectedAddHandler | Adds the specified delegate as an event handler of the specified source. (Inherited from WeakEventManager.) |
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ProtectedAddListener | Adds the provided listener to the provided source for the event being managed. (Inherited from WeakEventManager.) |
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ProtectedRemoveHandler | Removes the previously added handler from the specified source. (Inherited from WeakEventManager.) |
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ProtectedRemoveListener | Removes a previously added listener from the provided source. (Inherited from WeakEventManager.) |
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Purge | Removes inactive listener entries from the data list for the provided source. Returns true if some entries were actually removed from the list. (Inherited from WeakEventManager.) |
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Remove | Removes all listeners for the specified source. (Inherited from WeakEventManager.) |
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RemoveHandler | Removes the specified event handler from the specified event. |
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ScheduleCleanup | Requests that a purge of unused entries in the underlying listener list be performed on a lower priority thread. (Inherited from WeakEventManager.) |
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StartListening | Starts listening for the event on the specified object. (Overrides WeakEventManager.StartListening(Object).) |
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StopListening | Stops listening for the event on the specified object. (Overrides WeakEventManager.StopListening(Object).) |
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
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VerifyAccess | Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.) |
The WeakEventManager class enables you to leverage the weak event listener pattern by specifying the event to subscribe to, the source of the event, and event handler. You can use WeakEventManager<TEventSource, TEventArgs> as an alternative to implementing the IWeakEventListener interface and using a specialized WeakEventManager. When you call AddHandler, the source must be of type TEventSource and the event handler you pass must have TEventArgs as its event data. This ensures that type checking occurs at compile time.
Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, 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.
