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Define Session, SessionId and Session State in ASP.NET.Session:
- It is the duration of connectivity between a client and a server application.
- Session variables are stored in a SessionStateITemCollection object that is exposed through the HttpContext.Session property.
- It is indexed by the name of the variable or by an integer index.
- The session variables are created by referring to the session variable by name.
SessionId:
- Seesion identifires are used to identify request from the browser.
- By default, value of SessionId is stored in a cookie.
- You can configure the application to store SessionId in the URL for a "cookieless" session.
- It considered active as long as requests continue to be made with the same SessionID value.
Session state:
- It is used to store and retrieve values for a user.
- It enables you to store and retrieve values for a user as the user navigates ASP.NET pages in a web application.
- It identifies requests from the same browser during a limited time window as a session.
- It provides a way to persist variable values for the duration of that session.
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