how can I compare one int element with a list int

Question

I'm trying to compare my list with one id element in a query, I do this for my school but I don't know how.

List<int> list = (from d in db.Desv 
                  where d.LastDesvId != null 
                  select d.DesvId).ToList();

ViewBag.Desv = new SelectList(db.Desv
                                 .Where(x => x.state.Equals("Proc") && x.DesvId != list)
                                 .OrderBy(y => y.DesviacionId), "Id", "Id");

Answer 1

Contains(T element) returns true if element is in the list, else false. So the code you want is:

            List<int> list = (from d in db.Desv
                          where d.LastDesvId != null
                          select d.DesvId).ToList();

        ViewBag.Desv = new SelectList(db.Desv
                                         .Where(x => x.state.Equals("Proc") && !list.Contains(x.DesvId))
                                         .OrderBy(y => y.DesviacionId), "Id", "Id");