private void AddComputer_Click(object sender, RoutedEventArgs e) { using (var db = new ResourceModel()) { MessageBox.Show(db.AddComputer(TB_Indificator.Text, TB_IP.Text, TB_Description.Text, TB_Name.Text, TB_Domen.Text, db.ConvertorObjectInInt(CB_WorkingGroup.SelectedValue), db.ConvertorObjectInInt(CB_People.SelectedValue))); Update(); } }