Question

我已经创建了这样的存储过程：

ALTER procedure [dbo].[takeOrder]
(
    @id int = 0,
    @userid int = 0,
    @diningid int,
    @amount float
)
as
begin
    declare @countt as int

    select @countt = COUNT(*) 
    from Order_master 
    where dining_Id = @diningid and isActive = 1

    if @countt <> 0
    begin
        update Order_master 
        set amount = @amount 
        where dining_Id = @diningid and isActive = 1;
    end
    else
    begin
        insert into Order_master(userid, dining_Id, amount, [date], isActive)
        values (@userid, @diningid, @amount, GETDATE(), 1)
    end

    --select amount from Order_master where dining_Id=@diningid and isActive=1
    select oid 
    from Order_master 
    where dining_Id = @diningid and isActive = 1
end

在控制器中，我试图获得返回结果，如下所述：

[HttpPost]
public ActionResult takeOrder(Order_master order,List<Menu_info> menu)
{
            String msg = "";
            int oid;

            if (ModelState.IsValid)
            {
                try
                {
                    Order_master objOreder = new Order_master
                    {
                        amount = order.amount,
                        isActive = 1,
                        date = order.date,
                        dining_Id = order.dining_Id,
                        userId = order.userId
                    };
                   object orderId = db.takeOrder(objOreder.oid, objOreder.userId, objOreder.dining_Id, objOreder.amount);                                     
                   oid = (int)orderId;
                   msg = "success..!!";
                }
                catch (Exception ex)
                {
                    msg = "error...";
                }
            }
            else
            {
                msg = "please provide info";
            }

            if (Request.IsAjaxRequest())
            {
                return new JsonResult { Data = msg, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
            }
            else
            {
                return View();
            }
}

但它返回异常

无法转换类型＆＃39; System.Data.Objects.ObjectResult＆＃39;到＆＃39; int＆＃39;

我无法从存储过程中获得单个返回值。

希望我得到正确的解决方案。

Answer 1

db.TakeOrder（）。FirstOrDefault（）。ToString（） =一个以字符串形式返回的值

db.TakeOrder（）。FirstOrDefault（）。ToList（） =以列表形式返回的行。

Answer 2

创建视图

创建视图[dbo]。[vScalar] 如选择''AS值
在存储过程中返回

SELECT CAST（orderId AS VARCHAR（10））AS值
在Entity Framework中，设置函数return use entity vScalar
代码

vScalar orderId = db.takeOrder（objOreder.oid，objOreder.userId，objOreder.dining_Id，objOreder.amount）.FirstOrDefault;

oid =（int）orderId.value;

Answer 3

object orderId = db.takeOrder(objOreder.oid, objOreder.userId, objOreder.dining_Id, objOreder.amount);                                     
oid = (int)orderId;

尝试这种转换方法。

oid = Convert.ToInt32(orderId);

Answer 4

您可以使用

 public int InsertWebProperty(int orgid, int? userid, string address, string property_Id, string latitude, string longitude, int? compamyid)
    {
        return Convert.ToInt32((db.InsertWebProperty(orgid, userid, address, property_Id, latitude, longitude, 0)).FirstOrDefault().recidentity.Value);
    }

如果不适合你，请告诉我.. 感谢

使用从MVC4中的存储过程返回的结果

4 个答案: