asp.net session object being set to empty

Question

I have a Session object in my asp.net app that I am setting to the userID value. The session object gets instantiated in the gloal.asax. The value is being set on a button_click event when a user signs in and has been authenticated.

However, somewhere somehow in my app, the Session is being set to Empty. How can I determine where and how the session object is being set to empty?

Can you post the code that is in the global.asax? Usually, session would not need to be instantiated. — Davin Tryon
– Davin Tryon, Commented Aug 19, 2012 at 20:54

Csharp · Accepted Answer · 2012-08-25 02:06:45Z

3

Do a global search for the session variable within your project. Put a break point on all of the lines. and then closely step through the application. I just had the same bug two days ago. Took four hours stepping through 80+ pages. Good luck.

answered Aug 25, 2012 at 2:06

Csharp

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Comments

m.edmondson · Accepted Answer · 2012-08-19 17:18:34Z

1

A couple of reasons this may happen:

Are you modifying the variable on Page_Load()?
Is your browser returning the session cookie? (You can verify using Fiddler)

In my experience this kind of problem will almost certainly be addressed by the above.

answered Aug 19, 2012 at 17:18

m.edmondson

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6 Comments

DNR Over a year ago

Not on the page_load. I do have it in the global.asax session_start and then on button_click events is where the session value is being written or read from.

Jeff S Over a year ago

Also make sure the session ID isn't changing from when you create the variable in session_start to when you are trying to retrieve it in the click event.

m.edmondson Over a year ago

Ok I would double check what you've got in your global.asax, and that it isn't running for each request.

DNR Over a year ago

@m.edmondson I verified that the global.asax line is only being called when I launch the application.

DNR Over a year ago

@JeffSiver I am certain the session ID is not changing

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