1st:

      	private bool dragging = false;
        private Point offset;
        private Point start_point = new Point(0, 0);

MouseDown:

			dragging = true;
            start_point = new Point(e.X, e.Y);
MouseMove:

			if (dragging)
            {
                Point p = PointToScreen(e.Location);
                Location = new Point(p.X - this.start_point.X, p.Y - this.start_point.Y);
            }
MouseUp:

			dragging = false;

Minimize And Exit!

Minimize : this.WindowState = FormWindowState.Minimized;
Exit : Application.Exit();