Sessions ASP.Net Tutorial

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File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="SessionStateExample" %>



    Untitled Page


    
      

   
                 runat="server" 
              Width="472px" 
              Font-Size="Medium" 
              Font-Names="Verdana" 
              Font-Bold="True">
   
  
  
    
    
    
                    Width="120px" 
                Text="More Information" 
                runat="server" 
      OnClick="cmdMoreInfo_Click">
    
                   runat="server" 
               Width="272px" 
               Font-Size="Small" 
               Font-Names="Verdana" 
               Font-Bold="True">
        
    
  

                     Width="208px" 
                 Height="128px" 
                 runat="server">
    

  

  
  

    


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 SessionStateExample : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    if (!this.IsPostBack)
    {
      Product piece1 = new Product("A","A Inc.", 7.9M);
      Product piece2 = new Product("B","B Inc.", 6.5M);
      Product piece3 = new Product("C","C Ltd.", 3.1M);
      Session["Product1"] = piece1;
      Session["Product2"] = piece2;
      Session["Product3"] = piece3;
      lstItems.Items.Add(piece1.Name);
      lstItems.Items.Add(piece2.Name);
      lstItems.Items.Add(piece3.Name);
    }
    lblSession.Text = "Session ID: " + Session.SessionID;
    lblSession.Text += "Number of Objects: ";
    lblSession.Text += Session.Count.ToString();
    lblSession.Text += "Mode: " + Session.Mode.ToString();
    lblSession.Text += "Is Cookieless: ";
    lblSession.Text += Session.IsCookieless.ToString();
    lblSession.Text += "Is New: ";
    lblSession.Text += Session.IsNewSession.ToString();
    lblSession.Text += "Timeout (minutes): ";
    lblSession.Text += Session.Timeout.ToString();
  }
  protected void cmdMoreInfo_Click(object sender, EventArgs e)
  {
    if (lstItems.SelectedIndex == -1)
    {
      lblRecord.Text = "No item selected.";
    }
    else
    {
      string key = "Product" +(lstItems.SelectedIndex + 1).ToString();
      Product piece = (Product)Session[key];
      lblRecord.Text = "Name: " + piece.Name;
      lblRecord.Text += "Manufacturer: ";
      lblRecord.Text += piece.Description;
      lblRecord.Text += "Cost: " + piece.Cost.ToString("c");
    }
  }
}
 class Product
{
    private string name;
    public string Name
    {
        get { return name; }
        set { name = value; }
    }
    private string description;
    public string Description
    {
        get { return description; }
        set { description = value; }
    }
    private decimal cost;
    public decimal Cost
    {
        get { return cost; }
        set { cost = value; }
    }
  public Product(string name, string description,
    decimal cost)
  {
    Name = name;
    Description = description;
    Cost = cost;
  }
}