referencing a control in an emptydatatemplate of a gridview

Hi all:
I have a gridview where I must reference a control in the emptydatatemplate
The emptytemplate is
<EmptyDataTemplate> <asp:Panel ID="pnlnoimprimir" runat="server"> <tr> <td><b><asp:label ForeColor="Red" Text="*" runat="server" /> Fecha</b> <asp:DropDownList ID="ddldias" runat="server" /> <asp:Label Text="/" runat="server" /> <asp:DropDownList ID="ddlmeses" runat="server" /> <asp:Label Text="/" runat="server" /> <asp:DropDownList ID="ddlanos" runat="server" /> <asp:DropDownList ID="ddlhoras" runat="server" /> <asp:L ...