Question

I am trying to select MAX LevelId value for a user and then assign that value to a variable.

In plain SQL the equivalent is:

SELECT        MAX(LevelID) AS MaxLevel
FROM            Character
WHERE        (UserId = 'John')


//Check User existing Characters max level per user

int UserLevelID = 0;

var userQuery = (from o in db.Characters
where o.UserId == UserID
      select o);

UserLevelID = userQuery.Max(LevelID);

Here lies the problem. I don’t know how to extract the max value of levelID

Answer 1

You can do it all in one query:

var userLevelId = db.Characters.Where(o => o.UserID == UserID)
                               .Max(o => o.LevelID);

I’ve changed it away from being a query expression because that was introducing more cruft – use query expressions where they actually help readability, and extension method calls for simple solutions where they’re more readable.