Multiselection problems in GridGroupingControl

Multiselection problems in GridGroupingControl:

I need selecting a set of rows from the grid and processing them after a right mouse button click (in a popup menu). The problem is that when I handle TableControlCellClick, my multiselection is already wasted - the clicked row/cell is selected.

To solve this:
EITHER I need to know what event raises BEFORE TableControlCellClick is raised - TableControlCellMouseDown is not raised as I can see,
OR I need to know what event raises AFTER multiselection is complete - TableControlCellMouseUp is also not helping.

Thanks for your assistance.

Hi Kostya,

Please refer the below forum which discuss the similar issue for tracking the end of the row selection in a grid.
http://www.syncfusion.com/Support/Forums/message.aspx?MessageID=47107

Best Regards,
Haneef