PropertyChangingEventHandler 代理人

定義

表示將處理 PropertyChanging 介面的 INotifyPropertyChanging 事件的方法。Represents the method that will handle the PropertyChanging event of an INotifyPropertyChanging interface.

public delegate void PropertyChangingEventHandler(System::Object ^ sender, PropertyChangingEventArgs ^ e);
public delegate void PropertyChangingEventHandler(object sender, PropertyChangingEventArgs e);
type PropertyChangingEventHandler = delegate of obj * PropertyChangingEventArgs -> unit
Public Delegate Sub PropertyChangingEventHandler(sender As Object, e As PropertyChangingEventArgs)

參數

sender
Object

事件的來源。The source of the event.

e
PropertyChangingEventArgs

PropertyChangingEventArgs,其中包含事件資料。A PropertyChangingEventArgs that contains the event data.

繼承
PropertyChangingEventHandler

備註

PropertyChangingEventHandler會在 .NET Framework 版本3.5 中引進。PropertyChangingEventHandler is introduced in the .NET Framework version 3.5. 如需詳細資訊,請參閱版本和相依性For more information, see Versions and Dependencies.

建立 PropertyChangingEventHandler 委派時,必須識別處理事件的方法。When you create a PropertyChangingEventHandler delegate, you identify the method that will handle the event. 若要使事件與您的事件處理常式產生關聯,請將委派的執行個體 (Instance) 加入至事件。To associate the event with your event handler, add an instance of the delegate to the event. 除非您移除委派,否則每當事件發生時就會呼叫事件處理常式。The event handler is called whenever the event occurs, unless you remove the delegate. 如需事件處理常式委派的詳細資訊, 請參閱處理和引發事件For more information about event-handler delegates, see Handling and Raising Events.

擴充方法

GetMethodInfo(Delegate)

取得表示特定委派所代表之方法的物件。Gets an object that represents the method represented by the specified delegate.

適用於