How to set CommandArgument of LinkButton in GridView?

[lax4u]

I have a gridview with <EmptyDataTempl ate>.
<EmptyDataTempl ate>
<asp:LinkButt on ID="InsertSecti onLink" runat="Server" CausesValidatio n="True" CommandName="Em ptyDataTemplate Insert">Insert New Secition</asp:LinkButton>
<asp:TextBox ID="txtDescript ion" runat="Server"> </asp:TextBox>
</EmptyDataTempla te>

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