public static List <DbEntities.Subjects.Subject> LoadSubject(ref DropDownList cmbSubject, int schoolId) { cmbSubject.DataTextField = "Name"; cmbSubject.DataValueField = "Id"; using (var helper = new DbHelper.Subject()) { var cats = helper.GetSubjectList(schoolId); //if (includeEmptyField) { cats.Insert(0, new DbEntities.Subjects.Subject() { Id = 0, FullName = "" }); } cmbSubject.DataSource = cats; cmbSubject.DataBind(); return(cats.ToList()); } }