I used the scroll synchronization function in two gridviews through the linked example.
Since this is an old version, the ShowSearchPanel property does not exist.
If I put a SearchPanel in "PART_VerticalScrollBar", two objects appear.
When SearchPanel=true, the first is the VerticalScrollBar of SearchPanel, and the second is the VerticalScrollBar of the GridView.
When SearchPanel=false, only VerticalScrollBar of GridView is displayed.
How can I identify the "PART_VerticalScrollBar" of the GridView when the user uses the SearchPanel as a variable? I guess you shouldn't use "LastOrDefault".