c# - 显示不在表中的所有 AD 组成员

Question

我将如何将以下 sql 查询转换为 LINQ

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

我想列出 Active Directory 组中不在员工表中的所有成员

我试过了

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

但你会知道它没有用。

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：

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