GridView RowUpdated Never Fires

[Guest]

My GridView is bound in VB code to a DataTable. The RowUpdating event fires
when the row's Update linkbutton is clicked and the row contains the old,
pre-edited values (as is expected.)

However, the RowUpdated event never fires. The debugger shows the
Page_PreRender event fires immediately after the RowUpdating event fires.

I tried calling the GridView's UpdateRow method from the RowCommand event
and looking at the values afterward but that did not solve the problem.

I will appreciate any assistance.

Thank you,

Scott