RadGridView - Row Delete action Changes to Row Update action possible?

I'm using Telerik RadGridView for WinForms.  Its data source is a table in a DataSet.  The grid view allows user to add, update, and delete rows.  Below is how the row update is done:

private void radGridView2_CurrentRowChanged(object sender, CurrentRowChangedEventArgs e)
{
    if (e.OldRow == null)
    {
        return;
    }

    DataRowView dataRowView = e.OldRow.DataBoundItem as DataRowView;
    if (dataRowView != null)
    {
        DataRow dataRow = dataRowView.Row;
        if (dataRow.RowState == DataRowState.Modified)
        {                    
      tableAdapter.Update(dataRow);
        }
    }
}

What I would like to accomplish is when user press the DEL key on a row, the row is still removed from the grid view but not from the backend database table. Instead, I would like to have an Update on the database table row's colunm (MarkedForDeletion) with a new value.

I'm thinking about intercepting the delete events (UserDeletingRow, or UserDeletedRow, or ?), and then manipulate the DataRow object and then call the tableAdapter.Update(dataRow) as above.  What exactly do I need to do?

Thanks!