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Question on the slideshow extender

Posted By:      Posted Date: October 19, 2010    Points: 0   Category :ASP.Net

I need to set up the slide show based on a querystring parameter.  I thought I had this figured out, but I clearly don't understand something about how the webservice works. 

I have this in the .aspx page:

<asp:Button ID="btnPrev" runat="server" Text="Prev" />
    <asp:Button ID="btnPlay" runat="server" Text="Play" />
    <asp:Button ID="btnNext" runat="server" Text="Next" />
    <asp:Label ID="lblDesc" runat="server" />
    <cc1:SlideShowExtender ID="SlideShowExtender1" runat="server" BehaviorID="SSBehaviorID"

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