private void btnAdd_Click(object sender, EventArgs e) { try { DataRow newServicEqRow = DM.dtServiceTypeEquipment.NewRow(); //If any of the text areas are empty then do not write data and return if ((cmboEquipmentID.Text == "") && (cmboServiceTypeID.Text == "")) { MessageBox.Show("You must enter both values", "Error"); } else { newServicEqRow["ServiceTypeID"] = cmboServiceTypeID.Text; newServicEqRow["EquipmentID"] = cmboEquipmentID.Text; DM.dtServiceTypeEquipment.Rows.Add(newServicEqRow); DM.UpdatedServiceTypeEquipment(); MessageBox.Show("Service & Equipment mapped successfully", "Success"); } return; } catch (Exception ex) { MessageBox.Show(ex.Message); } }