private void btnAdd_Click(object sender, EventArgs e) { try { if (CheckValid() && addNew) { Customer re = new Customer() { FirstName = txtFirstname.Text, LastName = txtLastname.Text, Address = txtAdress.Text, Country = cbCountry.SelectedItem.ToString(), Email = txtEmail.Text, Phone = txtPhone.Text, RegisTime = DateTime.Now, StaffID = StaffID, }; if (ManagerDAL.AddNewCustomer(re)) { ManagerDAL.AddNewLog(new Log() { StaffID = StaffID, ActionTime = DateTime.Now, Main = "Add new Customer: " + txtCusID.Text }); MessageBox.Show("Add successful!"); BindingStatus = false; LoadData(); addNew = false; } else { MessageBox.Show("Add failed!"); } } else { MessageBox.Show("Invalid to Add!"); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }