Asp.net mvc when is session available

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Download Microsoft Edge More info. Contents Exit focus mode. Session and state management in ASP. View or download sample code how to download State management State can be stored using several approaches. Each approach is described later in this topic. May include data stored using server-side app code.

Session state Session state is an ASP. The cookie session ID: Is sent to the app with each request. Is used by the app to fetch the session data.

Session state exhibits the following behaviors: The session cookie is specific to the browser. Sessions aren't shared across browsers. Session cookies are deleted when the browser session ends. If a cookie is received for an expired session, a new session is created that uses the same session cookie.

Empty sessions aren't retained. The session must have at least one value set to persist the session across requests. When a session isn't retained, a new session ID is generated for each new request. The app retains a session for a limited time after the last request. The app either sets the session timeout or uses the default value of 20 minutes. Session state is ideal for storing user data: That's specific to a particular session. Where the data doesn't require permanent storage across sessions.

Session data is deleted either when the ISession. Clear implementation is called or when the session expires. There's no default mechanism to inform app code that a client browser has been closed or when the session cookie is deleted or expired on the client.

Session state cookies aren't marked essential by default. Session state isn't functional unless tracking is permitted by the site visitor. Warning Don't store sensitive data in session state. Note Most web clients such as web browsers enforce limits on the maximum size of each cookie, the total number of cookies, or both. Important If targeting.

Is this page helpful? Yes No. Any additional feedback? Skip Submit. Submit and view feedback for This product This page. View all page feedback. Determines the settings used to create the cookie. Name defaults to SessionDefaults. Path defaults to SessionDefaults. SameSite defaults to SameSiteMode.

Lax 1. HttpOnly defaults to true. IsEssential defaults to false. The IdleTimeout indicates how long the session can be idle before its contents are abandoned. Each session access resets the timeout. This setting only applies to the content of the session, not the cookie. The default is 20 minutes. The maximum amount of time allowed to load a session from the store or to commit it back to the store.

This setting may only apply to asynchronous operations. This timeout can be disabled using InfiniteTimeSpan. Finding the right timeout interval can be difficult!

The example below will set the Session variable username to "Donald Duck" and the Session variable age to "50":. You can also store user preferences in the Session object, and then access that preference to choose what page to return to the user.

The example below specifies a text-only version of the page if the user has a low screen resolution:. The example below removes the session variable "sale" if the value of the session variable "age" is lower than The Contents collection contains all session variables. You can loop through the Contents collection, to see what's stored in it:. If you do not know the number of items in the Contents collection, you can use the Count property:. You can loop through the StaticObjects collection, to see the values of all objects stored in the Session object:.

We just launched W3Schools videos. By default, session data is stored for 20 minutes from the last request. So, if you access a page and something is stored as session data for you, it will be automatically removed after 20 minutes unless you have made a new request within this time period. You can change the timeout duration when setting up sessions for your site see below , but as mentioned, you shouldn't try to use sessions to store data for long periods of time.

So, if you are looking to store data between multiple sessions, use cookies - otherwise, the session mechanism is a great choice. To understand the different use cases, think of a classic login system, where the user can check a checkbox to "Stay logged in": If this is not checked, the login state might as well be stored as a session and then disappear when the user leaves the site e.

If it is checked, a cookie should be used instead, resulting in the user still being logged in the next time they start their computer and visit your website. However, discussing sessions vs.

The reason is that while cookies are stored on the device of the user as small, plain-text files , session data is stored temporarily, in memory on the server.

However, since your web site will likely have more than one visitor, the server needs to know which visitor a piece of session data belongs to. For this, it creates a session ID, which is stored as a so-called session-cookie on the visitor device. With this ID, the visitor can access their session data across multiple requests.

NET frameworks, Sessions would be available right out of the box. NET Core is much more modular though, allowing you to add the building-blocks you need when you need the. NET sessions in details. Session is a State Management Technique.

A Session can store the value on the Server. It can support any type of object to be stored along with our own custom objects. A session is one of the best techniques for State Management because it stores the data as client-based. Now to set the session we need to use a config file. We can set the session on one of the following 2 types of configuration files:. NET State service. Now configure with the ASP. NET State Service. Step 1: Go To Start and from there go to "Run" and type "services.

NET State Service and start the service; by default these services are stopped. Step 3: For configuration with web. Generally the state services and web services are not in the same machine of a dedicated server so for the connection we need to write the stateConnectionString and here we need to provide the IP address or the name of the machine where the state service is running and here my services are run on localhost and is the port number.

The ASP. When the client sends a request to the web server, the web server stores the session data on the state server.