加入asp.net mvc4

Question

public class UserController : Controller
    {
        //
        // GET: /User/

        db_MVCEntities context = new db_MVCEntities();
        public ActionResult Index(tblLogin log)
        {
            var login = from o in context.tblLogins 
                     join od in context.tblReaders 
                     on o.ReaderId equals od.ReaderId 
                     where o.Username=="user"
                     select new { od.ReaderName};

            if (login != null) 
            {
                Session["uname"] = login.ToString();
                return View(context.tblBookInfoes.ToList());
            }
            return View("Index");
        }

我正在尝试加入2个表tblLogin和tblReader。 dB_MVCEntities是我的实体，它包含tblLogins和tblReaders rly。在这里，我必须从tblReader获取读者的名称，其中使用join在tblLogin表中给出用户名。 但它没有工作:( 输出似乎是

SELECT [Extent1].[ReaderId] AS [ReaderId], 
       [Extent2].[ReaderName] AS [ReaderName] 
FROM [dbo].[tblLogin] AS [Extent1] 
INNER JOIN [dbo].[tblReader] AS [Extent2] ON [Extent1].[ReaderId] = [Extent2].[ReaderId] 
WHERE 'user' = [Extent1].[Username]

请帮忙