Forms Data Controls :: Lost Sortexpression After Page Changed?

Jan 11, 2010

I'm trying to do databind with listview, datapager, and objectdatasource.When I just change the page number, it works correctly. But, when I sort a column and change the page number, it lost the sort expression. How do I fix the issue?

here is the source code

aspx page
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:UpdatePanel ID="updMaster" runat="server">[code]....

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