Visual C# Displaying A Gridview Using Querystring As A Parameter?

Mar 19, 2011

I have been working on a project to let users choose items for comparison. My approach is to send a query string from the users' choices (using checkboxes) to a new page, compare.aspx. I am using a gridview for this compare.aspx and here is the code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="compare.aspx.cs" Inherits="AsiaWebShop.compare" %>
Untitled Page
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" [code].....

However I got a "Data Type mismatch in criteria expression" error, does anybody knows why? Sorry I am just a complete newbie to asp.net and C#

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