A: 

Do you need to do this dynamically? If you only have "bonuse" and "leave" can you not create two listviews and then just do display logic to visible=true/false the listview based upon the link button clicked?

Robin Day
I thought about that, but if I do that will listView's be in the right place, and also, making too many listview's per page is not respecting the end user right, because page will be too heavy?
If you never databind the listview it won't render anything
dfowler