<asp:FormView ID="fvWasteCollected" runat="server" SkinID="annualReportFormview" ViewStateMode="Disabled"
          HeaderText="Selected Waste Collected Detail" DataKeyNames="MRWCollectionReportDetailId" DefaultMode="Insert"
          DataSourceID="odsMRWWasteCollectedDetail" OnDataBound="fvWasteCollected_DataBound"
          OnItemCommand="fvWasteCollected_ItemCommand" OnItemInserted="fvWasteCollected_ItemInserted"
          OnItemUpdated="fvWasteCollected_ItemUpdated" OnItemDeleted="fvWasteCollected_ItemDeleted">
          <EditItemTemplate>
               <table class="detailstable">
                     <asp:Panel ID="pnlOtherContractor" runat="server" Visible="false">
                          <tr>
                              <th></th>
                                   <td align="left">
                                       Blah Blah
                                   </td>
                           </tr>
                     </asp:Panel>
                 </table>
    </EditItemTemplate>

protected void fvWasteCollected_ItemCommand(object sender, FormViewCommandEventArgs e)
    {
      if (e.CommandName.Equals("Edit"))
        {

            ValidationSummaryWasteDetail.ValidationGroup = "WasteReceivedDetail";
            fvWasteCollected.ChangeMode(FormViewMode.Edit);
            gvCollectionEventDetail.Columns[0].Visible = false;
            DataRowView rowView = (DataRowView)fvWasteCollected.DataItem;
            DropDownList ddl = (DropDownList)fvWasteCollected.FindControl("ddl_MRWContractor");
            //Tried Panel pnlOtherContractor = (Panel)fvWasteCollected.FindControl("pnlOtherContractor");
            FormViewRow myFormRow = fvWasteCollected.Row;
            Panel pnlOtherContractor = (Panel)myFormRow.FindControl("pnlOtherContractor");

            var s_contractorId = rowView["MRWContractorId"].ToString();
            if (s_contractorId == "0")
            {
                pnlOtherContractor.Visible = true;
            }
        }
    }