Updating a listview without refreshing it

I have a listview that retrieves its data from an sql database.  The sql database has sql dependency enabled and works great!  The problem I have is when the sql dependency runs, it refreshes the listview and sometime causes a null exception when a user clicks on an item in the listview to pull up the information for that record while the listview refresh is running.  I want to know if there is a way to instead of clearing the listview and adding the items back to the listview can you just add or remove items based on the query ran.  Any help and guidance on this issue is greatly appreciated!!

Thanks in advance,
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That would require you to loop through the records retrieved from database and compare each item with listview to determine if it has been added or removed or unchanged. This would be slow. I suggest you disable listview while its being refreshed to avoid the error.

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russell12Author Commented:
Thank you for your suggestion!  I will take your suggestion on locking the listview!!  Thanks again!
Glad to help :-)
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