display gridview boundfields

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ASP.NET

Hello sir,
I have a gridview and I have 5 labels and 5 textboxes and one submit button.
Whenever I enter some values in the textboxes, that values should be displayed on gridview.
My requirement is whenever I open the page, the gridview is not displaying. Whenever I enter some values gridview displaying with values. I want to display the gridview boundfields as empty whenever I open the page. After entering the details, it has to display those values.
I took gridview like below to achieve this.
If anybody knows please help me.
Thank you.

<td colspan="6" style="width:1060;">
  <table class="tableStyleBorder " width="1060">
    <tr>
       <td colspan="6" style="width:1060;">
         <asp:GridView ID="GVProductOrder" runat="server" AutoGenerateColumns="false"
           GridLines="Vertical" Height="100" Width="1055">
           <HeaderStyle CssClass="HeaderStyleGrid" />
           <Columns>
             <asp:BoundField DataField="ItemCode" HeaderText="Item Code" />
             <asp:BoundField DataField="ItemName" HeaderText="Item Name" />
             <asp:BoundField DataField="Cost" HeaderText="Cost" />
             <asp:BoundField DataField="MRP" HeaderText="MRP" />
             <asp:BoundField DataField="SP" HeaderText="SP" />
             <asp:BoundField DataField="MBQ" HeaderText="MBQ" />
             <asp:BoundField DataField="Quantity" HeaderText="Quantity" />
             <asp:BoundField DataField="FreeQty" HeaderText="Free Qty" />
             <asp:BoundField DataField="FixedDisc" HeaderText="Fixed Disc" />
             <asp:BoundField DataField="Tax" HeaderText="Tax" />
             <asp:BoundField DataField="Value" HeaderText="Value" />
             <asp:BoundField DataField="OnOrder" HeaderText="On Order" />
             <asp:BoundField DataField="Remarks" HeaderText="Remarks" />
             <asp:BoundField DataField="Type" HeaderText="Type" />
             <asp:BoundField DataField="EanCode" HeaderText="Ean Code" />
           </Columns>
         </asp:GridView>
       </td>
    </tr>
  </table>
</td>