There are two main types of state management in ASP.NET: session state and view state. Both have their pros and cons, but it’s important to understand the differences between them so you can choose the right option for your application. In this blog post, we’ll take a look at the differences between session state and view state, and we’ll discuss when each option is best suited for use.
What is a Session State?
- Session State is a temporary data store that is used to maintain information about a user’s interaction with a web application. Session state is typically stored in a database or on the server’s file system.
- Session state can be used to store information about the user’s preferences, shopping cart contents, or anything else that needs to be persisted across multiple page views.
- When a user makes a request to a web server, the server looks up the session state associated with that user and uses it to generate the response. Once the response has been sent back to the user, the session state is typically discarded. Session state is an important part of many web applications and can be used to improve the user experience by reducing the need to constantly re-enter information.
What is a View State?
View State is a technique used by developers to track the state of a page across postbacks. View State is stored in a hidden field on the page and is sent back to the server with each request. View State can be used to store any type of information, including user input, control values, and session information.
- View State is often used to preserve the state of a page or control between postbacks. For example, View State can be used to remember the selected value in a drop-down list or the text entered in a text box.
- View State can also be used to store information that should not be persisted, such as the results of a search query. In general, View State should only be used to store small amounts of data.
- View State can quickly become large and cause performance problems if it is used to store too much data. View State is encrypted by default to help protect sensitive information, but View State can be decrypted and read by an attacker if the encryption key is compromised. For this reason, View State should not be used to store sensitive information.
Differences between a Session State and a View State
Session State and View State are two important client-side state management techniques used in ASP.NET web applications. Session State is used to store data that is specific to a user session, whereas View State is used to store data that is specific to a page view. Session State is stored in memory on the server, while View State is stored in a hidden field on the page. Session State is faster than View State, but it can be more expensive if you have a lot of users because it uses more server resources. View State is slower than Session State, but it uses less server resources.
In this blog post, we’ve outlined the differences between a session state and a view state. We also looked at how you can use these states to improve your application’s performance.