private void Update() { List <OperatorModel> models = new List <OperatorModel>(); DGR.ItemsSource = null; using (var db = new ResourceModel()) { foreach (var op in db.GetOperator()) { if (op.UserStatus != "user") { models.Add(new OperatorModel() { OperatorID = op.OperatorID, Login = op.Login, Password = op.Password, People = op.People, PeopleID = op.PeopleID, UserStatus = op.UserStatus.Remove(op.UserStatus.Length - 1) }); } else { models.Add(new OperatorModel() { OperatorID = op.OperatorID, Login = op.Login, Password = op.Password, People = op.People, PeopleID = op.PeopleID, UserStatus = op.UserStatus }); } } DGR.ItemsSource = models; CB_People.ItemsSource = db.GetPeople(); } }