Referencing webcontrols in an UpdatePanel in EditItemTemplate of a Gridview

Hi I am getting null reference exception when trying to reference a web control which is within an AJAX UpdatePanel, which itself is within and EditItemTemplate of a Gridview. I am doing this in the RowDataBound event handler of the gridview as follows:
protected void gvIntakes_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { DataRowView row = (DataRowView)e.Row.DataItem; UpdatePanel up = (UpdatePanel)e.Row.FindControl("Status_UpdatePanel"); //**** up is showing null on debug Panel pnlSelectStaff = (Panel) up.FindControl("pnlSelectStaff") ; Panel pnlSchedule = (Panel)up.FindControl("pnlSchedule"); Any help provided will be much appreciated.
Thanks in advance!
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