public static SelectList SelectListTopic(int id = 0, string langId = "") { var list = new List <Topic>(); if (langId == "") { list = new MyBlogEntities().Topics.ToList(); list.Add(new Topic() { Id = 0, Name = "Not exists" }); } else { list = new MyBlogEntities().Topics.Where(x => x.LangId == langId).ToList(); } return(new SelectList(list, "Id", "Name", id)); }