Question

我正在使用mircosoft asp网站上的asp.net tailspin spyworks教程，当我在最后提交订单时，我收到了try catch块的错误，只是想知道可以任何人帮助我，这是TAILSPIN SPYWORKS TRY CATCH ERROR下面的错误

用户代码未对异常进行处理错误：无法提交订单 - 未实施方法或操作。

 public bool SubmitOrder(string UserName)
    {
        using (CommerceEntities1 db = new CommerceEntities1())
        {
            try
            {
                //----------------------------------------------------------------+
                // Add New Order Record |
                //----------------------------------------------------------------+
                Order newOrder = new Order();

                newOrder.CustomerName = UserName;
                newOrder.OrderDate = DateTime.Now;
                newOrder.ShipDate = CalculateShipDate();
                db.Orders.Add(newOrder);
                db.SaveChanges();
                //----------------------------------------------------------------+
                // Create a new OderDetail Record for each item in the Shopping                  
                String cartId = GetShoppingCartId();
                var myCart = (from c in db.ViewCarts where c.CartID == cartId select c);
                foreach (ViewCart item in myCart)
                {
                    int i = 0;
                    if (i < 1)
                    {
                        OrderDetail od = new OrderDetail();
                        od.OrderID = newOrder.OrderID;
                        od.ProductID = item.ProductID;
                        od.Quantity = item.Quantity;
                        od.UnitCost = item.UnitCost;
                        db.OrderDetails.Add(od);
                        i++;
                    }
                    var myItem = (from c in db.ShoppingCarts
                                  where c.CartID == item.CartID &&
                                      c.ProductID == item.ProductID
                                  select c).FirstOrDefault();
                    if (myItem != null)
                    {
                        db.DeleteObject(myItem);
                    }
                }
                db.SaveChanges();
            }
            catch (Exception exp)
            {
                throw new Exception("ERROR: Unable to Submit Order - " + exp.Message.ToString(),
                exp);

            }
        }
        return (true);
    }

堆栈追踪：

[NotImplementedException：未实现方法或操作。] c：\ Users \ podge \ Desktop \ WebApplication23 \ WebApplication23 \ Data_Access \ Model1.Context.cs中的WebApplication23.Data_Access.CommerceEntities1.DeleteObject（ShoppingCart myItem）：52 c：\ Users \ podge \ Desktop \ WebApplication23 \ WebApplication23 \ Classes \ MyShoppingCart.cs：116

中的WebApplication23.MyShoppingCart.SubmitOrder（String UserName）

[例外：错误：无法提交订单 - 未实施方法或操作。] c：\ Users \ podge \ Desktop \ WebApplication23 \ WebApplication23 \ Classes \ MyShoppingCart.cs中的WebApplication23.MyShoppingCart.SubmitOrder（String UserName）：123 WebApplication23.CheckOut.CheckoutBtn_Click（Object sender，ImageClickEventArgs e）位于c：\ Users \ podge \ Desktop \ WebApplication23 \ WebApplication23 \ CheckOut.aspx.cs：27 System.Web.UI.WebControls.ImageButton.OnClick（ImageClickEventArgs e）+115 System.Web.UI.WebControls.ImageButton.RaisePostBackEvent（String eventArgument）+124 System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent（String eventArgument）+10 System.Web.UI.Page.RaisePostBackEvent（IPostBackEventHandler sourceControl，String eventArgument）+13 System.Web.UI.Page.RaisePostBackEvent（NameValueCollection postData）+35 System.Web.UI.Page.ProcessRequestMain（Boolean includeStagesBeforeAsyncPoint，Boolean includeStagesAfterAsyncPoint）+1724

ASP.Net c＃tailspin spyworks我的购物车类

0 个答案: