How to pass value from cookie to grid view ?

private void AddToShoppingCart(int ProductID)
    {
        if (Request.Cookies["ShoppingCart"] == null)
        {
            HttpCookie oCookie = new HttpCookie("ShoppingCart");
            //Set Cookie to expire in 3 hours
            oCookie.Expires = DateTime.Now.AddHours(3);
            oCookie.Value = ProductID.ToString();
            Response.Cookies.Add(oCookie);
        }
        else
        {
            bool bExists = false;
            char[] sep = { ',' };
            HttpCookie oCookie = (HttpCookie)Request.Cookies["ShoppingCart"];
            //Set Cookie to expire in 3 hours
            oCookie.Expires = DateTime.Now.AddHours(3);
            //Check if Cookie already contain same item
            string sProdID = oCookie.Value.ToString();
            string[] arrCookie = sProdID.Split(sep);
            for (int i = 0; i < arrCookie.Length; i++)
            {
                if (arrCookie[i].Trim() == ProductID.ToString().Trim())
                {
                    bExists = true;
                }
            }
            if (!bExists)
            {
                if (oCookie.Value.Length == 0)
                {
                    oCookie.Value = ProductID.ToString();
                }
                else
                {
                    oCookie.Value = oCookie.Value + "," + ProductID;
                }
            }
            //Add back into  the Response Objects.
            Response.Cookies.Add(oCookie);
        }
    }

<asp:GridView ID="grdCart" runat="server" AutoGenerateColumns="False"
    DataKeyNames="ItemID" CellPadding="4"
    ForeColor="Black" GridLines="Horizontal" Height="260px" Width="856px"
    BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
        <asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("ImageUrl","~/Images\\{0}") %>'/>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="ProductName" HeaderText="Product" ReadOnly="True" />
        <asp:BoundField DataField="Quantity" HeaderText="Quantity" />
        <asp:BoundField DataField="Price" DataFormatString="{0:c}" HeaderText="Price" ReadOnly="True" />
        <asp:BoundField DataField="SubTotal" DataFormatString="{0:c}" HeaderText="Total"
            ReadOnly="True" />
        <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
    </Columns>
    <EmptyDataTemplate>
        Your Shopping Cart is empty, add items
        <a href="Itemss.aspx">Add Products</a>
    </EmptyDataTemplate>
    <FooterStyle BackColor="#CCCC99" ForeColor="Black" />
    <HeaderStyle BackColor="#333333" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="White" ForeColor="Black" HorizontalAlign="Right" />
    <SelectedRowStyle BackColor="#CC3333" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F7F7F7" />
    <SortedAscendingHeaderStyle BackColor="#4B4B4B" />
    <SortedDescendingCellStyle BackColor="#E5E5E5" />
    <SortedDescendingHeaderStyle BackColor="#242121" />
</asp:GridView>