数据库在从SQL视图访问数据时在MVC Web应用程序中抛出InvalidOperationException状态500

Question

我正在开发一个Asp.Net MVC应用程序,其中我有一个包含五列的SQL视图,我有以下模型

public class InferredBid
    {
        public int Id { get; set; }
        public string Market { get; set; }
        public string Term { get; set; }
        public string Bid { get; set; }
        public string Offer { get; set; }
    }

SQL视图

Create VIEW [dbo].[InferredBids]
AS
with numbered as
(
    select id, product, grade, term, bid, offer, termid, row_number() OVER (Partition BY Product, Grade ORDER BY termid) i
    from  dbo.CanadianCrudes
)

select r1.i as Id, r1.product + '/' + r1.grade as Market, r1.term + '/' + r2.term as Term, r1.Bid - r2.Offer [Bid], r1.Offer - r2.Bid [Offer] 
from numbered r1 join numbered r2 on  r1.product = r2.product and r1.grade = r2.grade and r1.termid+1=r2.termid and r1.i<r2.i and r1.term!=r2.term          


GO

当我打开应该从上面的SQL视图呈现数据的页面时.它只是扔了我一个InvalidOperationException

<m:type>System.InvalidOperationException</m:type>
<m:stacktrace/>
<m:internalexception>
<m:message>
The 'Id' property on 'InferredBid' could not be set to a 'Int64' value. You must set this property to a non-null value of type 'Int32'.
</m:message>

我尝试将属性设置为int32但仍然有同样的问题.

Answer 1

将代码更改为以下内容,因为SQL似乎返回long该字段的Int64(相当于C#).

public class InferredBid
{
    public long Id { get; set; }
    public string Market { get; set; }
    public string Term { get; set; }
    public string Bid { get; set; }
    public string Offer { get; set; }
}