Sql server 实体框架是否将SQL存储过程的默认返回值从0更改为-1？

尝试解决返回值问题时，EF4似乎没有按预期处理存储过程中的返回值

当我仅从SQLServerManagementStudio运行存储过程时，返回值为零。这是意料之中的。但是，当我从服务运行代码时，相同的存储过程调用返回-1

using (var ctx = new LAMSEntities())
            {
                ObjectParameter tempComputerId = new ObjectParameter("computerId", Guid.Empty);
                ObjectParameter tempCustomerId = new ObjectParameter("customerId", string.Empty);

                result = ctx.RegisterCustomerComputer_i(regCode, machineHashId, tempComputerId, tempCustomerId);

                if (result != 0)  //0 = success in SQL Stored Procedures
                    ///TODO:  may want to add logging at this point to determine what the cause of failure was.
                    return null;

                CustomerRegistration cr = new CustomerRegistration();
                cr.ComputerHash = machineHashId;
                cr.ComputerId = Guid.Parse(tempComputerId.Value.ToString());
                cr.CustomerId = tempCustomerId.Value.ToString();
                cr.RegistrationCode = regCode;
                cr.RegistrationDate = DateTime.Now;

                return cr; 
            }

这是我服务电话中的代码。RegisterCustomerComputer_i是存储过程。如有任何建议或见解，我们将不胜感激。

请尝试

 ctx.RegisterCustomerComputer_i(regCode, machineHashId, tempComputerId, tempCustomerId).First();