Question

我收到了这个错误：

无法在LINQ to Entities查询中构造实体或复杂类型“Model.Members”。

我的代码：

public List<Members> getTeamMembers(String tem_reference)
{
        var query = from c in cecbContext.Projects
                    join b in cecbContext.TeamMembers on c.proj_team equals b.team_reference
                    join d in cecbContext.Members on b.mem_reference equals d.mem_reference
                    where c.proj_reference == tem_reference
                    select new Members
                    {
                        mem_reference = d.mem_reference
                    };
    return query.ToList<Members>();
}

Answer 1

我相信你遇到问题是因为你试图投射一个映射的实体，这个答案会告诉你更多：https://stackoverflow.com/a/5325861/2208058

这是我认为可能对你有用的：

var query = from c in cecbContext.Projects
                join b in cecbContext.TeamMembers on c.proj_team equals b.team_reference
                join d in cecbContext.Members on b.mem_reference equals d.mem_reference
                where c.proj_reference == tem_reference
                select d.mem_reference;
return query.Select(ref => new Members { mem_reference = d.mem_reference  }).ToList();

实体框架查询错误？

1 个答案: