public static List <SelectListItem> GetTestsforGenebygeneid(int?id) { using (EditorsEntities entity = new EditorsEntities()) { var test = (from t in entity.lib_GetTestsForGeneByGeneID(id).OrderBy(k => k.Name) select new SelectListItem { Value = t.TestID.ToString(), Text = t.Name }).ToList(); return(test); } }