private void ButtonLogin_Click(object sender, EventArgs e) { var result = DeliverymansController.AuthenticateUser(textBoxUname.Text, textBoxPass.Text); if (result == true) { MessageBox.Show("Success", "Alert"); this.Hide(); var Purchases = PurchaseController.GetAllOrder(); DeliveryManpanel l = new DeliveryManpanel(Purchases); l.Show(); } else { MessageBox.Show("Failed", "Alert"); } }