public void ProcessConfig() { int result; result = CauHinh.Check_User(txtTK.Text, txtMK.Text); if (result == 1) { MessageBox.Show("Sai" + lbTK.Text + " Hoac " + lbMK.Text); return; } else if (result == 2) { MessageBox.Show("Tai Khoan Bi Khoa"); return; } if (Program.homeMainForm == null || Program.homeMainForm.IsDisposed) { Program.homeMainForm = new HomeForm(); } this.Visible = false; Program.homeMainForm.Show(); }