Display different forms at different screen

protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            if (Screen.AllScreens.Length > 1)
            {

                Form2 frm = new Form2();

                // Important !
                frm.StartPosition = FormStartPosition.Manual;

                // Get the second monitor screen
                Screen screen = GetSecondaryScreen();

                // set the location to the top left of the second screen
                frm.Location = screen.WorkingArea.Location;

                // set it fullscreen
                frm.Size = new Size(screen.WorkingArea.Width, screen.WorkingArea.Height);

                // Show the form
                frm.Show();

            }
        }

public Screen GetSecondaryScreen()
        {
            if (Screen.AllScreens.Length == 1)
            {
                return null;
            }

            foreach (Screen screen in Screen.AllScreens)
            {
                if (screen.Primary == false)
                {
                    return screen;
                }
            }

            return null;
        }