How to search data from Database using Linq

Question

I want to query data from database but want to use linq and also check data is null or not and have to use Contains function.

Actually i am sending data from a form then it should be check weather title contains this or not but i am getting error of null

var SearchTile = db.Job.Where(c => c.Title.Contains(Jobserach)).ToList();

Answer 1

var check = db.Job.ToList();
var SerachTile = check.Where(c => c.Title.Contains(Jobserach));