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What is ASP.NET State Mangement?

Stateless hypertext transfer protocol, or stateless HTTP, provides use of asp.net resize image on upload application hosted on the web server. Stateless protocols refer to communication protocols that consider individual requests as transactions outside of all previous requesting, ultimately treating each request being an independent query and response. Therefore, if the active server page network needs to implement state management, or perhaps the operation of user-interface control, independently. Some shared user-defined variables manage the condition of a software, and initializes when an “Application_OnStart” event occurs upon the original launching of an application. You can access the user-defined variables - based on their name -- through the “Applications” collection.

file upload control in asp.net server-side session states will also be within a couple of shared user-defined variables present during a user session. The network administrator can configure user-defined variables to self destruct following a defined demonstration of inactivity. Client-side user sessions are managed by a session ID baked into the URL or by cookie placement. Active server page networks support three persistence modes concerning server-side session variables: ASP state, in-process and Sql server. Sql server mode stores server-side variables in a database that permits session variables to persist during process shutdown. Even though the slowest approach to session state management, this allows the application form to share with you sessions among servers, whereby balancing the load on the whole server set. ASP state mode maintains server-side variables in a separate type of Windows. ASP state mode -- the second slowest state session mode -- executes state management beyond active server page process, and accesses data via .NET Remoting. Just like Sql Server mode, ASP state mode balances and scales its data load between multiple servers and, also just like Sql server mode, runs independently of the active server page process network. This leads to server-side session variables persisting during process shutdown. The easiest state session mode - in-process - maintains session variables inside the active server page process itself. Unlike Sql server and ASP state mode, state session mode destroys the variables upon process shutdown.

The page-level state management mechanism typically called view state, uses HTML pages made by ASP.NET applications to keep up and manage web-form controls. View state is primarily utilized to maintain data during file upload and postbacks, or when data from the webpage is transmitted to some server. In page-level mode, the state of the controls are encoded and transmitted for the server within the hidden “_VIEWSTATE” field. After transmission, the controls are decoded in the server, and prepared for use inside the “ViewState” collection. The “_VIEWSTATE” value however, just isn't encrypted, and subject to the vulnerabilities base64 string containing the session state data. As recourse, a developer can institute server-wide or server-specific encryption as a primary way of protection.