RadTabStrip for ASP.NET AJAX

RadControls for ASP.NET AJAX

You can have your tab strip cause postbacks to a different Web page from the one that contains it. Simply set the PostBackUrl property to the page that should handle the postback.

CopyASPX
 <telerik:RadTabStrip
  ID="RadTabStrip1"
  runat="server"
  Skin="Default"
  PostBackUrl="CrossPageCS.aspx"
  OnTabClick="RadTabStrip1_TabClick"
  DataSourceID="TabStripDS">
</telerik:RadTabStrip>

Once in the second page, you can access the the tab strip (or any other control) on the previous page using the Page.PreviousPage property: