private void addButton_Click(object sender, EventArgs e) { //Set Price as Mandatory if (String.IsNullOrEmpty(orderQuantityTextBox.Text) && String.IsNullOrEmpty(totalOrderPriceTextBox.Text)) { MessageBox.Show("Quantity And Total Price Field Required!!!"); return; } else { //Check UNIQUE Customer Name if (_orderManager.IsCustomerNameAndIteamNameExists(customerNameComboBox.Text, itemNameComboBox.Text)) { MessageBox.Show(" Already Exists!"); return; } else { order.IteamName = itemNameComboBox.Text; order.CustomerName = customerNameComboBox.Text; order.OrderQuantity = Convert.ToInt16(orderQuantityTextBox.Text); order.TotalPrice = Convert.ToDouble(totalOrderPriceTextBox.Text); bool isAdded = _orderManager.AddOrderInfo(order); if (isAdded) { MessageBox.Show("Saved"); } else { MessageBox.Show("Not Saved"); } } } //Check ItemName UNIQUE //if (_orderManager.IsItemNameExists(iteamNameTextBox.Text)) //{ // MessageBox.Show(iteamNameTextBox.Text + " Already Exists!"); // return; //} //Add/Insert Item }