private void EditResource_Click(object sender, RoutedEventArgs e) { using (var db = new ResourceModel()) { MessageBox.Show(db.EditResource(db.ConvertorObjectInInt(DGR.SelectedValue), TB_Title.Text, Convert.ToDateTime(DT_DateStart.SelectedDate), Convert.ToDateTime(DT_DateEnd.SelectedDate), db.ConvertorObjectInInt(CB_People.SelectedValue))); } Update(); }