Solved

Why is this cookie  value always null?

Posted on 2008-06-18
6
1,297 Views
Last Modified: 2010-04-21
I've tried it a couple of ways and it always comes up as null on Page_Load().  The value is what I expect it to be right after I set it.


protected void Page_Load(object sender, EventArgs e)

    {

        if (!Page.IsPostBack)

        {

 

            HttpCookie cookie = new HttpCookie("Preferences");

 

            if (cookie != null)

                ddl_report.SelectedValue = cookie["LastReportRun"];

            

            //The previous line is executed, but cookie["LastReportRun"] is always null.
 

            SetCriteriaVisibility();

        }

    }

 

 

    protected void btn_run_report_Click(object sender, EventArgs e)

    {

        HttpCookie cookie = new HttpCookie("Preferences");

        cookie.Values.Add("LastReportRun", ddl_report.SelectedValue);

        cookie.Expires = DateTime.Now.AddMonths(2);

        Response.Cookies.Add(cookie);

 

        string s = cookie["LastReportRun"];

    }

Open in new window

0
Comment
Question by:dtburdick
  • 3
  • 2
6 Comments
 
LVL 16

Expert Comment

by:burakiewicz
ID: 21812929
the value wont be available until the page does a postback
0
 

Author Comment

by:dtburdick
ID: 21813166
So when do I set it?  The following didn't work even though it hits the line of code where it sets the cookie.  It is still null the next time I start the application.


    protected void Page_Load(object sender, EventArgs e)

    {

        if (ddl_report.SelectedIndex >0)

        {

            HttpCookie cookie = new HttpCookie("Preferences");

            cookie.Values.Add("LastReportRun", ddl_report.SelectedValue);

            cookie.Expires = DateTime.Now.AddMonths(2);

            Response.Cookies.Add(cookie);
 

            string s = cookie["LastReportRun"];

        }
 

        if (!Page.IsPostBack)

        {
 

            HttpCookie cookie = new HttpCookie("Preferences");
 

            if (cookie != null)

                ddl_report.SelectedValue = cookie["LastReportRun"];

            

            SetCriteriaVisibility();
 

        }

    }

Open in new window

0
 
LVL 16

Expert Comment

by:burakiewicz
ID: 21813280
you are never getting the cookie you need something like this
HttpCookie cookie1=  Response.Cookies.Get("preferences");
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:dtburdick
ID: 21814120
That isn't working either.  I hate it when simple stuff slows me down.
0
 
LVL 33

Accepted Solution

by:
raterus earned 125 total points
ID: 21814188
You need to get the cookie from the Request, not the Response.

        if (!Page.IsPostBack)
        {
 
            HttpCookie cookie = Request.Cookies["Preferences"];
 
            if (cookie != null)
                ddl_report.SelectedValue = cookie["LastReportRun"];
           
            //The previous line is executed, but cookie["LastReportRun"] is always null.
 
            SetCriteriaVisibility();
        }
0
 

Author Closing Comment

by:dtburdick
ID: 31468337
Thank you so much.  I'd have been here for eternity looking at that.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now