Hi Jan,

With you testing then it confirms that Session objects are working okay. Put a breakpoint at the top of the SaveDataSet method in the Data.vb file. See if ds is of type CDataSet. Trace it through this method to see if it gives any clues to what might be happening.

Have you tried instlling the sample files and running them? Do they work?

>Hi Cathi,
>
>I placed a breakpoint after the line of code you mentioned. dsOrders exists, however, I'm not seeing a property called DataAdapter. Am I looking on the wrong place?
>
>I tested the session object as you suggested, and it works fine.
>Just as the Session("OrderDataSet") command in the Page_Load method I added a line of code similar to what's found on page 317:
>Session("ISBN") = "Test line"
>
>In the btnUpdate_Click method I retrieved the line with:
>Dim ISBN As String = Session("ISBN")
>In the debugger just after this line of code, ISBN is set to "Test line"