WPF window on closing

Question

I want send some data on server, before window close. I use event closing, but it doesn t wokr. Where is a problem?

    private void Window_Closing(object sender         


        

Answer 1

Try overriding OnClosing in the window code behind. There you have a chance to stop the window from closing if you have something else to do by setting e.Cancel = true.

    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
    {
       bool isClosed = _obj.CloseConnection();

       if(!isClosed)
          e.Cancel = true;

    }

Answer 2

Did you check if there's a problem on _obj.CloseConnection()? Try to debug your code and check if the event handler is called.