DataChangedEventManager Class

Reference

Definition

Namespace:: System.Windows.Data

Assembly:: PresentationFramework.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Provides a WeakEventManager implementation so that you can use the "weak event listener" pattern to attach listeners for the DataChanged event.

public ref class DataChangedEventManager : System::Windows::WeakEventManager

public class DataChangedEventManager : System.Windows.WeakEventManager

type DataChangedEventManager = class
    inherit WeakEventManager

Public Class DataChangedEventManager
Inherits WeakEventManager

Inheritance: Object

DispatcherObject

WeakEventManager
DataChangedEventManager

Remarks

In order to be listeners in this pattern, your listener objects must implement IWeakEventListener. You do not need to implement IWeakEventListener on the class that is the source of the events.

Properties

Dispatcher	Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject)
Item[Object]	Gets or sets the data being stored for the specified source. (Inherited from WeakEventManager)
ReadLock	Establishes a read-lock on the underlying data table, and returns an IDisposable. (Inherited from WeakEventManager)
WriteLock	Establishes a write-lock on the underlying data table, and returns an IDisposable. (Inherited from WeakEventManager)

Methods

AddHandler(DataSourceProvider, EventHandler<EventArgs>)	Adds the specified event handler, which is called when specified source raises the CurrentChanging event.
AddListener(DataSourceProvider, IWeakEventListener)	Adds the specified listener to the DataChanged event of the specified source.
CheckAccess()	Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)
DeliverEvent(Object, EventArgs)	Delivers the event being managed to each listener. (Inherited from WeakEventManager)
DeliverEventToList(Object, EventArgs, WeakEventManager+ListenerList)	Delivers the event being managed to each listener in the provided list. (Inherited from WeakEventManager)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
NewListenerList()	Returns a new object to contain listeners to the DataChanged event.
NewListenerList()	Returns a new object to contain listeners to an event. (Inherited from WeakEventManager)
ProtectedAddHandler(Object, Delegate)	Adds the specified delegate as an event handler of the specified source. (Inherited from WeakEventManager)
ProtectedAddListener(Object, IWeakEventListener)	Adds the provided listener to the provided source for the event being managed. (Inherited from WeakEventManager)
ProtectedRemoveHandler(Object, Delegate)	Removes the previously added handler from the specified source. (Inherited from WeakEventManager)
ProtectedRemoveListener(Object, IWeakEventListener)	Removes a previously added listener from the provided source. (Inherited from WeakEventManager)
Purge(Object, Object, Boolean)	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)
Remove(Object)	Removes all listeners for the specified source. (Inherited from WeakEventManager)
RemoveHandler(DataSourceProvider, EventHandler<EventArgs>)	Removes the specified event handler from the specified source.
RemoveListener(DataSourceProvider, IWeakEventListener)	Removes the specified listener from the DataChanged event of the specified source.
ScheduleCleanup()	Requests that a purge of unused entries in the underlying listener list be performed on a lower priority thread. (Inherited from WeakEventManager)
StartListening(Object)	Begins listening for the DataChanged event on the specified source.
StopListening(Object)	Stops listening for the DataChanged event on the specified source.
ToString()	Returns a string that represents the current object. (Inherited from Object)
VerifyAccess()	Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)

Applies to

แชร์ผ่าน