How to CommandArgument of LinkButton inside EmptyDataTemplate?

[lax4u]

I have a gridview with <EmptyDataTemplate>.
<EmptyDataTemplate>
<asp:LinkButton ID="InsertSectionLink" runat="Server" CausesValidation="True" CommandName="EmptyDataTemplateInsert">Insert New Secition</asp:LinkButton>
<asp:TextBox ID="txtDescription" runat="Server"></asp:TextBox>
</EmptyDataTemplate>

How do i set the CommandArgument of "InsertSectionLink" to txtDescription.Text