En c#
private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
}
En VB
Private Sub GridProductos_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles GridProductos.ItemDataBound
End Sub
mira este link:
http://www.codeproject.com/aspnet/ItemCreated.asp