title: Check if results from LINQ query contains a value
body: <p>I have a LINQ query that brings back all records from a table called Permissions, where the userId is the current user.</p>
  
  <p>What I want to do is run a check on this result set and see if PermissionId of value 5 exists.. </p>
  
  <p>Whats the easiest way to do this?</p>