将SQL转换为LINQ到WHERE IN子句中的实体

如何将此sql语句转换为LINQ to实体

SQL语句：

Select * from Departments where DepartmentID  in (Select DepartmentID from Employees where FirstName like '%FirstName%' or LastName like '%LastName%')

---

我只有WHERE=（等于），我不能做WHERE-IN子句

LINQ到实体：

from t in db.Departments
where
  t.DepartmentID == -->Should be IN not EQUALS
    ((from t0 in db.Employees
    where
      t0.FirstName.Contains("FirstName") ||
      t0.LastName.Contains("LastName")
    select new {
      t0.DepartmentID
    }).FirstOrDefault().DepartmentID)
select t

你可以用这个

var x = 
    (from t0 in db.Employees
    where
      t0.FirstName.Contains("FirstName") ||
      t0.LastName.Contains("LastName")
    select new {
      t0.DepartmentID
    }).FirstOrDefault().DepartmentID;

from t in db.Departments
where
  t.DepartmentID.contains(x.DepartmentID)
select t

---

看一看哇！很好。。谢谢：）

var x = 
    (from t0 in db.Employees
    where
      t0.FirstName.Contains("FirstName") ||
      t0.LastName.Contains("LastName")
    select new {
      t0.DepartmentID
    }).FirstOrDefault().DepartmentID;

from t in db.Departments
where
  t.DepartmentID.contains(x.DepartmentID)
select t