显示所有AD组的成员谁在表中都没有

Question

我怎么会在下面的SQL查询转换为LINQ

select * 
from groupprincipal.members 
where displayname not in (select adusername 
          from employees) 

我想列出的Active Directory组不在员工表中的所有成员

我试图

var notLoggedIn = from groupMembers in groupPrincipal.Members 
          from loggedIn in employeeRepository.All 
          where groupMembers.DisplayName != loggedIn.ActiveDirectoryName 
          select groupMembers; 

，但是你会知道它没有工作。

Answer 1

var notLoggedIn = from groupMembers in groupPrincipal.Members 
        where !employeeRepository.Select(p=> p.adUserName).Contains(groupMembers.DisplayName) 
        select groupMembers; 

Answer 2

我相信这应该这样做：的

var notLoggedIn = 
from groupMembers in groupPrincipal.Members 
where !(from loggedIn in employeeRepository.All 
     select loggedIn.ActiveDirectoryName).Contains(groupMembers.DisplayName) 
select notLoggedIn;