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Editorial Team
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Asked: 2026-06-04T14:34:01+00:00

I have the feeling that i’m missing something key here. I’ve tried following guides

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I have the feeling that i’m missing something key here.

I’ve tried following guides on http://msdn.microsoft.com/en-us/magazine/cc300437.aspx
and on google, but i can’t see what i haven’t done.

I have some very basic code which i have written just trying to get this to work:

The Default.aspx code:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" EnableSessionState="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Demo Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="myLabel" runat="server" Text="foo"></asp:Label>
        <asp:LinkButton ID="lnkClickButton" runat="server" OnClick="lnkClickButton_Click" CommandName="Clicky">Click Me</asp:LinkButton>
    </div>
    </form>
</body>
</html>

The Default.aspx.cs code:

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Session["clickcount"] = 0;
        Cache["clickscount"] = 0;
    }
    protected void lnkClickButton_Click(object sender, EventArgs e)
    {
        Session["clickcount"] = (int)Session["clickcount"] + 1;
        Cache["clickscount"] = (int)Cache["clickscount"] + 1;

        Label myLabel = ((Label)this.FindControl("myLabel"));
        if (myLabel != null)
        {
            myLabel.Text = "Session: " + Session["clickcount"] + "; Cache: " + Cache["clickscount"] + ";";
        }
    }
}

I’ve tried using both the session object and the cache object to increment the values, but to no avail. I just get 1 every time.

N.B. this is my first asp.net project, also i’m fairly new to c#.

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1 Answer

  1. Editorial Team

    Page_Load is ran every postback as well as the initial load. You need to specify no postback in your Page_Load:

    protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack){
       Session["clickcount"] = 0;
       Cache["clickscount"] = 0;
    }
}

    Better still, specify that it should only be set if it doesn’t already have a value:

    protected void Page_Load(object sender, EventArgs e)
{
    if (Session["clickcount"] == null){
       Session["clickcount"] = 0;
    }
}

    Just to clarify, the reason that it is better to only set the value if it isn’t already set is that Page.IsPostBack is false every time someone directly visits the page. Say for instance you have your page http://example.com/Demo/Default.aspx and at the top you have a logo which you wrap in logo here, the session would be reset every time somebody clicked on the logo, even though they didn’t actually leave the page. Also happens if they refresh on their browser without re-posting the last post.

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