Gridview and Bind()

[Guest]

I am using sqldatasource and the gridview for editing a number of admin tables.

I woud like to use column index number in the following statement
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind(0)
%>'></asp:TextBox>

It appears that i must explicity name the column name in the aspx page like
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("fieldname")
%>'></asp:TextBox>

Is this true? ( i would like to refer to column index number instead)

thx
dave