get the rownumbers in Gridview using Templatefield in ROWCOMMAND event

[mesut]

hit there,

I have a problem getting the rownumbers when I use the template field
<asp:button control.
I don't get the rownumbers when I use this control. When I use a
buttonfield control then I get the rownumbers.
I don't know what the reason could be. But for some reason I need to
use Template column <Asp:buttonho w can I get the rownumbers in
Gridview in RowCommand event?

when I use templatefield asp:button the "e.CommandArgum ent" is
empty? why?

any help is appreciated,
mesut

See below my code.

ASP2.0 CODE:
===========
<asp:TemplateFi eld>
<ItemTemplate >
<asp:Button ID="btnRowUpdat e"
runat="server" Text="Update" />
</ItemTemplate>
</asp:TemplateFie ld>

Buttonfield:
===========
<asp:ButtonFiel d ButtonType="But ton"
CommandName="bt nUpdate" Text="Update" >
</asp:ButtonField >

VB.CODE
===========
Try
If IsNumeric(e.Com mandArgument) Then
Dim index As Integer =
Convert.ToInt32 (e.CommandArgum ent)
Dim row As GridViewRow = gvProductInfo.R ows(index)