WPF Application_Startup 事件将永远运行，除非我创建一个窗口并显示它

发布于 2025-01-03 14:41:52 字数 428 浏览 3 评论 0原文

如果我打开一个窗口并关闭它，WPF 应用程序就会关闭，但如果我没有打开任何窗口，它会保持运行状态，直到我明确关闭它。这是一个快速示例应用程序：

public partial class App : Application
{
    private void Application_Startup(object sender, StartupEventArgs e)
    {
        if (e.Args.Count() != 0)
        {
            var mw = new MainWindow();
            mw.ShowDialog();
        }
    }
}

如果您为该应用程序提供命令行参数，它将打开一个窗口，并在您关闭窗口后立即关闭；如果您不提供参数，它将不会关闭，必须通过任务管理器终止。

原文

WPF Application Shuts Down if I open a window and close it, but if I open no windows it stays running until I explicitly close it. Here is a quick sample application:

public partial class App : Application
{
    private void Application_Startup(object sender, StartupEventArgs e)
    {
        if (e.Args.Count() != 0)
        {
            var mw = new MainWindow();
            mw.ShowDialog();
        }
    }
}

If you supply this app a command-line argument it will open a window and close down as soon as you close the window; if you don't supply an argument it will not close and must be killed via task manager.

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凉墨 2025-01-10 14:41:52

检查 http://msdn.microsoft.com/en- us/library/system.windows.application.shutdownmode.aspx。

默认关闭模式为OnLastWindowClose。

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雪花飘飘的天空 2025-01-10 14:41:52

显然，这与 WPF 如何管理其关闭有关，需要设置 ShutdownMode 属性：

public partial class App : Application 
{ 
    private void Application_Startup(object sender, StartupEventArgs e) 
    {
        // this makes the behavior consistant, must call App.Shutdown(0) to exit
        this.ShutdownMode = System.Windows.ShutdownMode.OnExplicitShutdown;

        if (e.Args.Count() != 0) 
        { 
            var mw = new MainWindow(); 
            mw.ShowDialog(); 
        } 
    } 
}

Apparently, this has to do with how WPF manages its shutdown, there is a ShutdownMode property that needs to be set:

public partial class App : Application 
{ 
    private void Application_Startup(object sender, StartupEventArgs e) 
    {
        // this makes the behavior consistant, must call App.Shutdown(0) to exit
        this.ShutdownMode = System.Windows.ShutdownMode.OnExplicitShutdown;

        if (e.Args.Count() != 0) 
        { 
            var mw = new MainWindow(); 
            mw.ShowDialog(); 
        } 
    } 
}

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