Awaiting Asynchronous function inside FormClosing Event

Question

I\'m having a problem where I cannot await an asynchronous function inside of the FormClosing event which will determine whether the form close should continue. I have crea

Answer 1

You can't keep your form from closing with async/await. And you can get strange results.

What I would do is creating a Thread and setting its IsBackground property to false (which is false by default) to keep the process alive while form is closing.

protected override void OnClosing(CancelEventArgs e)
{
    e.Cancel = false;
    new Thread(() => { 
        Thread.Sleep(5000); //replace this line to save some data.....
        MessageBox.Show("EXITED"); 
    }).Start();
    base.OnClosing(e);
}