private void add_Click(object sender, EventArgs e) { if (!validateForm()) { return; } readData(); int employeeID = conDB.addEmployee(); Debug.WriteLine(employeeID); if (employeeID == 0) { MessageBox.Show("ชื่อพนักงาน \"" + nameTH.Text + "\" มีการเพิ่มเข้ามาแล้ว\nกรุณาตรวจสอบ"); nameTH.Focus(); } else { clearData(); if (fRMMain.oldPage == "UCAddCustomerClem") { fRMMain.addCustomerClem.employeeClem.Text = nameTH.Text; fRMMain.addCustomerClem.employeeClem.Focus(); } else if (fRMMain.oldPage == "UCAddEmployeeClem") { fRMMain.addEmployeeClem.employeeClem.Text = nameTH.Text; fRMMain.addEmployeeClem.employeeClem.Focus(); } fRMMain.changPage(); } }