Hi, is there any solution to make ActiveDataItem always show in first record?

For example, I click Bookmak button to bookmark several records, then I click previous or next button to show bookmarked records, in this behavior, 

I want the active bookmarked record always show in top like above picture, but actually it like this:

I use following code to bring ActiveDataItem to view:

channelDataGrid.BringDataItemIntoView(channelDataGrid.ActiveDataItem, false);

channelDataGrid.ExecuteCommand(DataPresenterCommands.RecordPageBelow);

But it can't make ActiveDataItem to top one.

Is there any solution? Thank you!