ASP.NET Gridview Linkbutton Hiding/Display page load issue - asp.net

Question

I am trying to hide/display a linkbutton in my gridview based on wether not the row in the Gridview is part of my shopping cart.
This is the gridview
<asp:GridView ID="productListTable" runat="server" DataSourceID="srcProductListPerCustomer" AutoGenerateColumns="False" AlternatingRowStyle-CssClass="tr_dark" HeaderStyle-CssClass="header_req" BorderWidth="0px" GridLines="None" AllowPaging="true" PageSize="25" EmptyDataText="No records." AllowSorting="false" Width="100%" DataKeyNames="product_ID_key" OnRowDataBound="productListTable_RowDataBound" OnRowCommand="productListTable_RowCommand" >
<Columns>
<asp:TemplateField HeaderText="Product Name" HeaderStyle-Width="250px" SortExpression="productName" ItemStyle-CssClass="product_name" >
<ItemTemplate>
<asp:Label ID="ProductNameField" runat="server" Text='<%# Eval("productName").ToString() %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<Columns>
<asp:TemplateField HeaderText="Quantity">
<ItemTemplate>
<asp:TextBox runat="server" ID="txtQuantity" Columns="5"></asp:TextBox><br />
<asp:LinkButton runat="server" ID="btnRemove" Text="Remove" CommandName="Remove" CommandArgument='<%# Eval("product_ID_key") %>' style="font-size:12px;" Visible="false"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle CssClass="header_req" />
<AlternatingRowStyle CssClass="tr_dark" />
<PagerStyle CssClass="pagination" />
<PagerSettings PageButtonCount="3" FirstPageText="First" LastPageText="Last" NextPageText="Next" PreviousPageText="Previous" Mode="NumericFirstLast" />
</asp:GridView>
The way I am trying to do this at the moment is by row data bound
Protected Sub productListTable_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles productListTable.RowDataBound
' If we are binding the footer row, let's add in our total
If e.Row.RowType = DataControlRowType.DataRow Then
'e.Row.Cells(6).Text = "Total Price: " & ShoppingCart.Instance.GetSubTotal().ToString("C")
Dim productId = Convert.ToInt32(productListTable.DataKeys(e.Row.RowIndex).Value)
Dim txtQuantity As TextBox = CType(e.Row.Cells(1).FindControl("txtQuantity"), TextBox)
Dim removeButton As LinkButton = CType(e.Row.Cells(1).FindControl("btnRemove"), LinkButton)
Dim updatedItem = New CartItem(productId)
For Each item As CartItem In ShoppingCart.Instance.Items
If item.Equals(updatedItem) Then
txtQuantity.Text = item.Quantity
removeButton.Visible = True
End If
Next
End If
End Sub
And it works fine, but not at the initial refresh of the page when adding a new product but only after a hard refresh I see the button appear. Do I need to perform this check in a different lifecycle or gridview event so i can see the update immediately ?