How do I hide a column in my Datagrid if AutoGenerateColumns is set to True?

Question: How do I hide a column in my Datagrid if AutoGenerateColumns is set to True?

Answer: AutoGenerated columns do not appear in the Datagrid's Columns() collection, and so the usual method of hiding a Datagrid column will fail:

'Will NOT work for AutoGenerated columns:
Datagrid1.Columns(1).Visible = False

So the place to handle this is in the ItemDataBound event of the Datagrid:

<asp:DataGrid id="Datagrid1" runat="server" AutoGenerateColumns="True" OnItemDataBound="Datagrid1_OnItemDataBound"/>

Codebehind
Private Sub Datagrid1_OnItemDataBound(s As Object, e As DatagridItemEventArgs)
e.Item.Cells(1).Visible = False
End Sub