how to make commandbutton invisible?

[Ben]

Hi,

I have a gridview with ShowSelectButton="True" and ShowEditButton="False".
When clicking on the 'Select' button (SelectedIndexChanged event), i want to
make it invisible and make the ShowEditButton visible.
I tried this but it doesn't work (Select is still visible and Edit is still
invisible).

aspx code:
----------
<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1">
<Columns>
<asp:CommandField ShowSelectButton="True" ShowEditButton="False" />
.......

code-behind:
-------------
Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e
As
System.EventArgs) Handles GridView1.SelectedIndexChanged
dim cf As CommandField
cf = New CommandField
cf.ShowSelectButton = False
cf.ShowEditButton = True
End Sub


Thanks for help
Ben