RadToolBar for ASP.NET AJAX

RadControls for ASP.NET AJAX

You can have the buttons in your toolbar cause postbacks to a different Web page from the one that contains them. Simply set the PostBackUrl property to the page that should handle the postback. You can set the PostBackUrl for the entire toolbar, or for individual buttons. If you set the PostBackUrl in both places, the URL of the button overrides the setting on the toolbar:

CopyASPX
<telerik:RadToolBar ID="RadToolBar1" runat="server" Skin="Outlook" PostBackUrl="CrossPage.aspx">
    <Items>
        <telerik:RadToolBarButton runat="server" Text="Button1" PostBackUrl="PageA.aspx" />
        <telerik:RadToolBarButton runat="server" Text="Button2">
        </telerik:RadToolBarButton>
    </Items>
</telerik:RadToolBar>

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