Is there an alternative of handling DataGrid.BeginningEdit event?

I am not an exert in MVVM so, probably, I am doing something not quite right.

Currently I have a WFP DataGrid bound to a collection of "ProductView" objects that implement IEditableObject interface and have "IsUpdating" property indicating whether the Product is currently updated asynchronously (sent to a web server or something else). I initiate asynchronous update operation from inside IEditableObject.EndEdit method.

To prevent the user from editing a Product that is currently being updated I use BeginningEdit event of the DataGrid:

        private void productGrid_BeginningEdit(object sender, DataGridBeginningEditEventArgs e)
        {
            //e.Row.Item

            ProductView pv = e.Row.DataContext as ProductView;

            if (pv.IsUpdating)
            {
                e.Cancel = true;
            }
        }

According to MVVM I should move this functionality to ProductView class so what is the best way to do that? Is there an alternative of handling DataGrid.BeginningEdit event?

Dmitriano http://developernote.com