private void button8_Click_1(object sender, EventArgs e) { string username, password; username = SAU.Text; password = SAP.Text; username.Trim(); password.Trim(); if (checkerA(username, password) == false) { MessageBox.Show("Wrong Username Or Password"); SAU.Clear(); SAP.Clear(); } else { Form6 f6 = new Form6(); this.Hide(); f6.ShowDialog(); this.Close(); } }