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  4. Forward the user to the information page, with the query string data (#)
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"  Inherits="QueryStringSender" %>



    Untitled Page


    
    

                             runat="server" 
                     Height="155px" 
                     Width="165px">
        
                              runat="server" 
                      Text="Show full details" />
        
                            runat="server" 
                    OnClick="cmdGo_Click" 
                    Text="View Information"
            Width="165px" />
        
        
    
    

    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class QueryStringSender : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!this.IsPostBack)
    {
      lstItems.Items.Add("A");
      lstItems.Items.Add("B");
      lstItems.Items.Add("C");
      lstItems.Items.Add("D");
      lstItems.Items.Add("F");
    }
  protected void cmdGo_Click(object sender, EventArgs e)
  {
    if (lstItems.SelectedIndex == -1)
        {
            lblError.Text = "You must select an item.";
        }
        else
        {
            string url = "NextPage.aspx?";
            url += "Item=" + Server.UrlEncode(lstItems.SelectedItem.Text) + "&";
            url += "Mode=" + chkDetails.Checked.ToString();
            Response.Redirect(url);
        }
    }
}
File: NextPage.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="NextPage.aspx.cs" Inherits="QueryStringRecipient" %>



    Untitled Page


    
    

        
    

    


File: NextPage.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class QueryStringRecipient : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        lblInfo.Text = "Item: " + Request.QueryString["Item"];
        lblInfo.Text += "Show Full Record: ";
        lblInfo.Text += Request.QueryString["Mode"];
    }
}