<asp:TemplateField HeaderText="Duration"  ItemStyle-Width="30%">
      <ItemTemplate>
           <asp:TextBox ID="txtNumOfStay" runat="server" Text='<%# Bind("NumOfStay") %>'  Width="50px"></asp:TextBox>
          <asp:DropDownList runat="server" ID="DDLOCBEIUnitOfStay">
           </asp:DropDownList>
    </ItemTemplate>
    <FooterTemplate>
         <asp:TextBox ID="txtNumOfStay" runat="server"  Width="50px"></asp:TextBox>
         <asp:DropDownList runat="server" ID="DDLOCBEFUnitOfStay">
         </asp:DropDownList>
      </FooterTemplate>
  </asp:TemplateField>