Resolved: How to prevent the main form closed by the user in .NET MAUI?

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    e.Cancel = true;
    this.WindowState = FormWindowState.Minimized;
}

      protected override void OnHandlerChanged()
      {
           base.OnHandlerChanged();
#if WINDOWS
           Microsoft.UI.Xaml.Window window = (Microsoft.UI.Xaml.Window)App.Current.Windows.First<Window>().Handler.PlatformView;
           IntPtr windowHandle = WinRT.Interop.WindowNative.GetWindowHandle(window);
           Microsoft.UI.WindowId windowId = Microsoft.UI.Win32Interop.GetWindowIdFromWindow(windowHandle);
           Microsoft.UI.Windowing.AppWindow appWindow = Microsoft.UI.Windowing.AppWindow.GetFromWindowId(windowId);
           window.Closed += (o, e) =>
            {
               e.Handled = true; 
               // this line will cancel the closed event
               (appWindow.Presenter as Microsoft.UI.Windowing.OverlappedPresenter).Minimize();
               // this line will minimize the window
            };
#endif
      }