把关闭（）； 在 Form_FormClosing 中延迟退出 3-4 秒

Question

So in my program, sometimes a .net form will hide but not close, leaving it running in the background. Is there a way to make sure everything is closed?

Code:

    private void Main_FormClosing(object sender, FormClosedEventArgs e)
    {
        Close();
    }

Thanks in advance!

Answer 1

The form is already closing, there is no need to call Close() again from the FormClosing event handler. Remove it.

By placing Close in the FormClosing event handler you are probably causing infinite recursion and/or flooding of the message pump . The application is most likely crashing.

If your app isn't being responsive to closure, ensure you aren't running any foreground threads that could be preventing your app from exiting. See Thread.IsBackground for more information.

Answer 2

So in my program, sometimes a .net form will hide but not close, leaving it running in the background. Is there a way to make sure everything is closed?

Code:

    private void Main_FormClosing(object sender, FormClosedEventArgs e)
    {
        Close();
    }

Thanks in advance!