为什么MainWindow_Closing事件不起作用？ [英] Why MainWindow_Closing event is not working?

问题描述

我有一个MainWindows和一个MainViewModel。

I have a MainWindows plus a MainViewModel.

MainViewModel _dataContext;
public MainWindow()
{
    InitializeComponent();
    Initialization();
    _dataContext = new MainViewModel();
    this.DataContext = _dataContext;
    _dataContext.ServerString =  "  Connected to Server " + ConfigurationManager.AppSettings["Server"];
}

现在我想通过点击窗口的红色x来关闭窗口。

Now I want to close the window by clicking the red x of the window.

void MainWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
     try
     {
         cTokenSource.Cancel();
         e.Cancel = true;
         Application curApp = Application.Current;
         curApp.Shutdown();
      }

但是我发现代码没有达到此事件。为什么？

However I found that the code didn't reach this event. Why?

<Application x:Class="WpfLoadTesting.App"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             StartupUri="MainWindow.xaml">
    <Application.Resources>
    </Application.Resources>
</Application>

推荐答案

你可能没有绑定y我们对Closing事件的MainWindow_Closing方法。这有两种方法（使用其中一种，而不是两种方式）。

• 来自XAML（在MainWindow.xaml中）：
  
  

You probably haven't bound your MainWindow_Closing method to the Closing event. Here are two ways to do that (use one of them, not both).

• From XAML (in MainWindow.xaml):
  

<Window ...

 Closing="MainWindow_Closing">

来自C＃代码（在构造函数中）：

From the C# code (in the constructor):

this.Closing += MainWindow_Closing;

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