Bind XML response to GridView in ASP.Net

hi,

I have this xml response which i need to bind with gridview

http://svcs.sandbox.ebay.com/services/search/FindingService/v1?OPERATION-NAME=findItemsAdvanced&SERVICE-VERSION=1.13.0&SECURITY-APPNAME=imtiaziq-price-SBX-35a5d0185-5020b5a8&keywords=harry potter phoenix&routing=default&SERVICE-NAME=FindingService

I tried this code but its not binding the result to gridview

using (DataSet ds = new DataSet())
   {
        ds.ReadXml(Server.UrlDecode("http://svcs.sandbox.ebay.com/services/search/FindingService/v1?OPERATION-NAME=findItemsAdvanced&SERVICE-VERSION=1.13.0&SECURITY-APPNAME=imtiaziq-price-SBX-35a5d0185-5020b5a8&keywords=harry%20potter%20phoenix&routing=default&SERVICE-NAME=FindingService"));
        GridView1.DataSource = ds;
        GridView1.DataBind();
   }

<asp:GridView ID="GridView1" runat="server">
     <Columns>
        <asp:BoundField DataField="title" HeaderText="Title" ItemStyle-Width="80" />       
    </Columns>
</asp:GridView>