退出 WPF 应用程序的最佳做法是什么？
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what is the best practice to exit an WPF application?
提问by sqr
I am maintaining an existing C# application, and I noticed the following code are not working as expected.
我正在维护一个现有的 C# 应用程序，我注意到以下代码没有按预期工作。
private void Form1_Load(object sender, EventArgs e){
...
if (proc.Length == 0)
{
proc = Process.GetProcessesByName("OpCon");
if (proc.Length == 0)
{
WriteLog("DataloggerService start: no TSS process detected; close;");
this.Close();
}
}
...
}
The code is supposed to exit after the Close() api call. However, it still proceed.
代码应该在 Close() api 调用后退出。然而，它仍在继续。
After some reading and research, I modified it to
经过一些阅读和研究，我将其修改为
private void Form1_Load(object sender, EventArgs e){
....
if (proc.Length == 0)
{
proc = Process.GetProcessesByName("OpCon");
if (proc.Length == 0)
{
WriteLog("DataloggerService start: no TSS process detected; close;");
this.Dispose();
Environment.Exit(0);
}
}
....
}
It seems to exit as expected. However, I am not confident whether this is the best practice?
它似乎按预期退出。但是，我不确定这是否是最佳实践？
is it really necessary to call this.Close() or this.Dispose() before Environment.Exit()?
真的有必要在 Environment.Exit() 之前调用 this.Close() 或 this.Dispose() 吗？
Thanks.
谢谢。
regards, Sqr
问候，平方
回答by jadavparesh06
In your WPF application whenever your MainWindow that is specified as StartupURI in App.xaml is closed your application exits automatically.
在 WPF 应用程序中，只要在 App.xaml 中指定为 StartupURI 的 MainWindow 关闭，您的应用程序就会自动退出。
Still if you want to handle this exit of application on your end you can go for below solution.
尽管如此，如果您想最终处理此应用程序退出，您可以使用以下解决方案。
Override the onClosing of MainWindow and manually exit/shutdown your application.
覆盖 MainWindow 的 onClosing 并手动退出/关闭您的应用程序。
protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
{
// Shutdown the application.
Application.Current.Shutdown();
// OR You can Also go for below logic
// Environment.Exit(0);
}
