Hi Cathy,

More info...I'm guessing the problem has to do with persistence?

I did a little test, and found that if I add a line of code in the Click event to execute GetOrderObj.GetOrderByOrderID() filling it in with a hard-code paramenter, then it seems to work. Obviously not the correct approach though.

In the Page_Load event on page 337, I did verify that the following line is intact:
Session("OrderDataSet") = dsOrder

And in the Click event on page 339, the following command is there:
Dim dsOrders As DataSet = CType(Session("OrderDataSet"), DataSet)

It sure seems as if this information is not being transferred correctly, however.