private void btnAdd_Click(object sender, EventArgs e)
 {
     //create instance of form
     frmAddOrder AddOrder = new frmAddOrder();
     //display the form
     AddOrder.Show();
 }
        private void btnAdd_Click(object sender, EventArgs e)
        {
            //create instance of form
            frmAddOrder AddOrder = new frmAddOrder();

            //display the form
            AddOrder.Show();
        }