What is the difference between session and viewstate in asp.net

Now I will explain the difference between viewstate and sessionstate in asp. View State :. Read more. Session State :. This data available till user close the browser or session time completes. Us age. Session state provides more security when compared with view state as the data value is stored in server side. Newer Post Older Post Home. Subscribe to: Post Comments Atom. Interview Questions in ASP. NET Framework Simple login form example in asp. Search This Site. Get Latest articles in your inbox for free.

Enter your email address:. NET worker process. Here are the various session modes available in ASP. They have their own advantages and disadvantages. Guys, It is very important to understand about the session modes when you are working with an ASP.

NET application with session variables as state management techniques. The session modes selected as mode in webconfig enables the ways session variable are stored and it will be then responsible for the application behavior. Off If an application has no requirement or need for session state then it's very important to use the off mode.

By using this application performance will be better. NET web application using a configuration file by setting the mode attribute in the element SessionState. All ASP. NET functionality runs within the scope of this process. Basically session variables are stored in the executable that is an IIS worker process.

So if the request is coming from the same user the data will be available. Advantages of InProc: Easy to Implement. Complex Objects can be added without serialization. Best in performance compared to out-of-process modes. In that case data loss will happen witch make the application break.

Scalability is a major problem. Not good for applications with a large user base. Where to Use In Proc mode is best suited for the application that is hosted on a single server and mid size use base or the session variable used is not big, to avoid data loss and scalability issues.

State Server Session Mode The disadvantage of session data loss is due to the worker process recycle that can be reduced using another mode, the state server mode. NET state service. This ensures that session state is preserved if the web application is restarted and also makes session state available to multiple Web servers in a Web farm.

NET is a Windows services that stores the session variable data in their process. Procedure to set up state server mode Go to Run then enter "Services. NET State Service. By default ASP. NET state service is in manual mode. NET Windows service is running.

Port: By default the state service listens to the TCP port that is configurable using the registry. Here in my example I am using my machine's Windows service to implement the state server mode.

It could be a separate dedicated machine or a web server in the network depending on requirements. So now the session state variables are stored in a Widows service of the my machine so the recycling process of the ASP. NET worker process does not have any impact on the session variables.

Advantages of State Server Mode: Worker process recycling does not impact session variable data Can be stored on the same web server or different dedicated machine Disadvantage of State Server Mode: Restart of sate service could lead to session data loss. This mode also provides a reliable way to store session data and preserve values after an IIS or web server restart and best suited for the web farm like application deployment.

Since we are storing the session variables in a SQL Server database we need a databse and table to store the data. It depends on the Window's operating system and the version of.

Net framework installed on the machine. In my case I have Windows 7 and framework version 4. Run the tool from that location using the command below. Session data will be able to survive after worker process restart or state window service restart. Most scalable compared to the other modes. Most suited for web garden or web farm type deployments and able to handle larger data in the session.

Where to Use Here we have learned about session state and various modes to store data in session variables. SessionState variables are cleared, when the user session times out. The default is 20 minutes. This is configurable in web. Application State variables are available across all page s and across all sessions. Application State variables are like multi-user global data.

Application State variables are stored on the web server. Application State variables are cleared, when the process hosting the application is restarted. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.