how use sql primitive in c # entities. : how use sql primitive in c # entities. 

ex: SELECT studentID, studentName FROM dbo.Student

I did: using(studentEbestuur db = new studentEbestuur())
{
 var ListST = db.ChungLoais.SqlQuery("SELECT studentID, studentName FROM dbo.Student").toList();
}

but it is an err: 
[enter image description here][1]

  [1]: https://i.stack.imgur.com/D6jHO.png

Okay. Help me. Thank all you. =) =)