Gordon,
>I am having similar problems with the paging in .NET. I have successfully done two grids, but the third is not cooperating. I have placed the code into the PageIndexChanged event as described throughout this thread, but it still does not work.
>
>1. Click on "2" (nothing happens)
>2. Click on "2" again (page refreshes, with old data)
>
>I am at a lose to understand what the differences are.
You might try setting a breakpoint in the PageIndexChanged methods of your working forms and the other form to compare behaviors in that method.

Also, be sure that before you call the databind in PageIndexChanged, that you also have the current data retrieved from the session first.

// Retrieve the Class DataSet
DataSet tblClass = (DataSet)Session["tblClass"];