private void button1_Click(object sender, EventArgs e) { Controller controllerObj = new Controller(); int no_of_rows = controllerObj.AddCustomer(Int16.Parse(textBox1.Text), textBox2.Text, textBox3.Text, textBox4.Text, textBox5.Text, textBox6.Text, textBox7.Text); if (no_of_rows == 1) { MessageBox.Show("Successful"); } else { MessageBox.Show("Failed"); } }