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Home/ Questions/Q 4538928
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Editorial Team
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Editorial Team
Asked: May 21, 20262026-05-21T14:52:36+00:00 2026-05-21T14:52:36+00:00

Say I have a WPF application with a button. In the buttom click event,

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Say I have a WPF application with a button. In the buttom click event, I created a System.Windows.Window instance. For some reason, I forgot to call window.ShowDialog() and leave there. When my main application starts, then clicked on the button, nothing happens of cause. But when I want to exit this application, the main window closed, but the process is still running. I’m not sure why causes this behavior. It’s easy to be fixed, but does anyone know

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  1. Editorial Team
    Editorial Team
    2026-05-21T14:52:36+00:00Added an answer on May 21, 2026 at 2:52 pm

    I imagine it’s because the default for Application.ShutdownMode is ShutdownMode.OnLastWindowClose. If you set it to ShutdownMode.OnMainWindowClose it should exit immediately after you close the main window.

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