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This article introduces the knowledge of "how to understand the usage of Global.asax in the global program file of ASP.net". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The specific analysis is as follows:

Generally speaking, ASP.NET applications can have only one Global.asax file, which supports many items. The specific analysis is as follows:

Application_Start: called when the application receives the first request, which is an ideal place in the application to assign values to application-level variables or to specify the state that must be maintained for all users.

Session_Start: similar to the Application_Start event, but this event is called the first time the user accesses the application. For example, the Application_Start event is triggered only when the first request is received, the first request causes the application to run, and the Session_Start event is called the first time each end user makes a request to the application.

Application_BeginRequest: it is not listed in the template provided by Visual Studio, but this event is triggered before each request is made. That is, before the request arrives at the server and is processed, the Application_BeginRequest event is triggered and processed before the request is processed.

Application_AuthenticateRequest: this event is triggered by each request, allowing custom authentication to be established for the request.

Application_Error: triggered when a user of the application throws an error. It is suitable for providing application-level error handling or logging errors to the server's event log.

Session_End: when running in InProc mode, this event is triggered when the end user exits the application.

Application_End: triggered at the end of the application. Most ASP.NET developers do not use this event because ASP.NET does a good job of closing and cleaning up the remaining objects.

This is the end of the introduction to "how to understand the usage of Global.asax in ASP.net global program files". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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