hello, I have gridview with TextBox Template field and DropDownExtender so when user click on the textbox another gridview will appear tha contain List of items and button to add the item to the first gridview. my qusetion is: how can i in the event of button click(which is in the extender gridview) to get the row index of the first gridview(which contain the textbox)?

thanks

        <cc1:DropDownExtender ID="uxItemExtender" runat="server" DropDownControlID="uxItemContainer" TargetControlID="uxItems"></cc1:DropDownExtender>
        <asp:Panel BackColor="AliceBlue" ID="uxItemContainer" runat="server" ScrollBars="Both" Height="400" Width="200">
        <asp:GridView ID="uxItemsView" runat="server" Font-Size="Small" AutoGenerateColumns="false" OnRowDataBound="uxItemsView_RowDataBound">
        <Columns>
        <asp:TemplateField HeaderText="Item Details">
        <ItemTemplate>
         <asp:Label ID="uxItemNameLbl" Text="Name :" runat="server"></asp:Label>
        <asp:Label ID="uxItemName" runat="server"></asp:Label><br />
        <asp:Label ID="uxItemDescriptionLbl" Text="Description :" runat="server"></asp:Label>
        <asp:Label ID="uxItemDescription" runat="server"></asp:Label><br />
        <asp:Label ID="uxItemPriceLbl" Text="Price :" runat="server"></asp:Label>
        <asp:Label ID="uxItemPrice" runat="server"></asp:Label><br />
        <asp:Button ID="uxSelectItem" runat="server" Text="Add Item" OnClick="uxSelectItem_Click" /><br />
        </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Picture">
        <ItemTemplate>
        <asp:Image ID="uxItemImage" runat="server" Width="45" Height="50" />
        </ItemTemplate>
        </asp:TemplateField>
        </Columns>
        </asp:GridView>
        </asp:Panel>
         </asp:TemplateField>