You may need to save them in a session. That's what we were doing, though I don't think it's the best approach.

See samples in this message Re: Code suddenly stopped working Thread #1347992 Message #1348120

To restore
DataSet dts = (DataSet)Session["dts"];

To Save
Session["dts"] = dts;


>Hi,
>
>I was wondering. Say you have a DateSet (and table and view) created in the PAGE_LOAD method under condition of
>
>

>if (!Page.IsPostBack) 
>

>
>And I want this DataSet to be in "scope" (or available) when the page is posted back (that is in the condition of ELSE, what should I do?
>
>I can make the DataSet and Table and View to be a property of the page but that does not solve the problem. Because on the post back the DataSet has nothing.
>
>What is the solution to this?
>
>Thank you in advance for any suggestions.