how to use query string to send value to other page from a link button which is inside grdview which is inside accordion pane!!!

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C#

ASP.NET

Ajax

Hello!!!

I am currently facing a situation where i have to send value to some page through query string.
The problem is that the link button is inside grid-view which is inside accordion pane.

All the panes are created dynamically and grid-view is filled in accordance with the values in pane.

<asp:Accordion ID="Accordion1" runat="server"
        TransitionDuration="300" FadeTransitions="true"
            ContentCssClass="accordion-content" HeaderCssClass="accordion-header"
            HeaderSelectedCssClass="accordion-selected"
            onitemdatabound="Accordion1_ItemDataBound" Width="100%"
            onitemcommand="Accordion1_ItemCommand">
           <HeaderTemplate>
               <asp:Label runat="server" ID="lblCategory" Text='<%# Eval("CName") %>'></asp:Label>

           </HeaderTemplate>
           <ContentTemplate>

               <asp:HiddenField runat="server" ID="txtCategoryID" Value='<%#DataBinder.Eval(Container.DataItem,"CID") %>' />
                   <asp:GridView AutoGenerateColumns="false" ShowHeader="false" ID="GridView1" runat="server" GridLines="None" EmptyDataText="Sorry !!! Currently there are no products in this category">
        <Columns>
        <asp:TemplateField>
        <ItemTemplate>
<asp:LinkButton runat="server" Text='<%#Eval("PName") %>' ID="lnkbtnProductName" ></asp:LinkButton></ItemTemplate>
        </asp:TemplateField>
        </Columns>
        </asp:GridView>

           </ContentTemplate>
        </asp:Accordion>

this is how the panes are created

private void fillpane()
    {
        cmd = new SqlCommand( "Select CID,CName from Category", con);
        da = new SqlDataAdapter (cmd);
        ds = new DataSet();
        da.Fill(ds);
        Accordion1.DataSource = ds.Tables[0].DefaultView;
        Accordion1.DataBind();
    }

this is how the gridview get filled

protected void Accordion1_ItemDataBound(object sender, AjaxControlToolkit.AccordionItemEventArgs e)
{
    if (e.ItemType == AjaxControlToolkit.AccordionItemType.Content)
    {
        cmd = new SqlCommand ("Select PID,PName from Products where PCategoryID='" + ((HiddenField)e.AccordionItem.FindControl("txtCategoryID")).Value + "'", con);
        da = new SqlDataAdapter (cmd);
        ds = new DataSet();
        da.Fill(ds);
        GridView grd = new GridView();
        grd = (GridView)e.AccordionItem.FindControl("GridView1");
        grd.DataSource = ds;
        grd.DataBind();
    }
}