Difference between static variable, sessionstate and viewstate.

Question

1.73/5 (3 votes)

See more:

Please tell me the difference between static variable, sessionstate and viewstate - all of these three.
I find, all of them can store value of a variable within round trips.

What should we use and in which condition? Performance wise?

Thanks

Posted 11-Jan-11 21:14pm

Pardeep Dhiman

Updated 21-Dec-17 5:24am

Sandeep Mewara

v2

Add a Solution

Comments

Sandeep Mewara 12-Jan-11 3:30am

Did you try Google?

R. Giskard Reventlov 12-Jan-11 3:50am

That's a very big question and inappropriate for this forum which is here to answer specific programming questions. Your question would be best researched using Google or at the library.

4 solutions

Solution 1

This is a short explaination:

Viewstate makes the roundtrip, it's rendered to the html and sent back during postback/callback.

Session state is a dictionary of objects that lives as part of your session. There is one for each session/user.

a static variable is global to the application on one server.

Regards
Espen Harlinn

Posted 11-Jan-11 22:03pm

Espen Harlinn

Comments

OriginalGriff 12-Jan-11 4:34am

"a static variable is global to the application on one server"
Not quite - it is not available outside the defining class unless it is specifically declared as public. Normally, a static variable would not be public (although a static property might).

Espen Harlinn 12-Jan-11 4:59am

As I said - a short explanation. We both know that many questions merit more comprehensive answers, but the full answer usually put people, without the proper motivation, to sleep. A reasonably motivated developer would know the answer to this kind of questions or read a book.

Solution 2

A static variable holds information that is common to all instances on a class: It is shared between them instead of being created anew with each instance.

Sessionstate is a variable that is held on the server. Every time your user goes to the server to get a page, the server has to know how much of the last web page needs to be "remembered" when the new information is retrieved.

Viewstate is similar to sessionstate, but it remembers changes to the state of a page across postbacks.

In all seriousness, this is just a brief outline, there is a lot more to understand. I suggest you try Google, and read up on this, because there is a lot to learn, and a heck of a lot more that I can type in here!

Posted 11-Jan-11 22:05pm

OriginalGriff

Solution 5

And, then, you have bullies like @Richard Deeming & Kats2512 who remove valid solutions.

Posted 21-Dec-17 5:24am

MacSpudster

Comments

[no name] 21-Dec-17 11:43am

Maybe you have to explain that more. And the most aproriate Forums for this are "Bugs and Suggestions" or "Spam and Abuse Watch" and not as a solution to a Q dated in 2011 ....?

Richard Deeming 21-Dec-17 14:29pm

And then you have idiots like this, who post complaints as "solutions" to questions, ignoring the fact that the question was solved SEVEN FRICKIN' YEARS AGO!

But hey, I suppose we should just let you carry on farming those rep-points, eh? >:(

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Anupama Roy · Accepted Answer · 2011-01-11T22:09:00

ViewState is only used on a single page that handles postbacks. Once you
redirect to the new page, the ViewState is lost.

Session can persist the value across the application.So,even if you redirect to another page you don't lose the value.

Static Variable will be shared across all instances of aspx page.Hence if you have two users of same aspx at the same time value is shared which is not good & I personally would suggest never use static variables in a web scenario.

Difference between static variable, sessionstate and viewstate.

4 solutions

Solution 1

Solution 2

Solution 3

Solution 5

Add your solution here

Preview 0

Existing Members

...or Join us