FormClosingEventHandler FormClosingEventHandler FormClosingEventHandler FormClosingEventHandler Delegate

定义

表示处理 FormClosing 事件的方法。Represents the method that handles a FormClosing event.

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

参数

sender
Object Object Object Object

事件源。The source of the event.

继承
FormClosingEventHandlerFormClosingEventHandlerFormClosingEventHandlerFormClosingEventHandler

注解

FormClosing事件发生之前关闭窗体,可由用户通过用户界面 (UI),或对方法的调用以编程方式,如CloseForm类,或ExitApplication类。The FormClosing event occurs just before a form is closed, either by the user, through the user interface (UI), or programmatically, through calls to methods such as Close in the Form class, or Exit in the Application class. 可以取消此事件。This event can be canceled.

创建 FormClosingEventHandler 委托时,需要标识将处理该事件的方法。When you create a FormClosingEventHandler delegate, you identify the method that will handle the event. 若要将事件与事件处理程序关联,请将该委托的一个实例添加到事件中。To associate the event with your event handler, add an instance of the delegate to the event. 除非移除了该委托,否则每当发生该事件时就会调用事件处理程序。The event handler is called whenever the event occurs, unless you remove the delegate. 有关事件处理程序委托的详细信息,请参阅处理和引发事件For more information about event-handler delegates, see Handling and Raising Events.

扩展方法

GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate)

获取指示指定委托表示的方法的对象。Gets an object that represents the method represented by the specified delegate.

适用于

另请参阅