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What is global.asax


Global.asax is an optional file which is used to handling higher level application events such as Application_Start, Application_End, Session_Start, Session_End etc. It is also popularly known as ASP.NET Application File. This file resides in the root directory of an ASP.NET-based application.

Global.asax contains a Class representing your application as a whole. At run time, this file is parsed and compiled into a dynamically generated .NET Framework class derived from the HttpApplication base class. You can deploy this file as an assembly in the \bin directory of an ASP.NET application. The Global.asax file itself is configured so that if a user requests the file, the request is rejected. External users cannot download or view the code written within it.

How to careet a Global.asax file

Global.asax file don't create normally; you need to add it by yourself.

How to ?


Your Global.asax file look like this

<%@ Application Language="C#" %> <script runat="server"> void Application_Start(object sender, EventArgs e) { // Code that runs on application startup } void Application_End(object sender, EventArgs e) { // Code that runs on application shutdown } void Application_Error(object sender, EventArgs e) { // Code that runs when an unhandled error occurs } void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started } void Session_End(object sender, EventArgs e) { // Code that runs when a session ends. // Note: The Session_End event is raised only when the sessionstate mode // is set to InProc in the Web.config file. If session mode is set to StateServer // or SQLServer, the event is not raised. } </script>

After that you need to add a class in your project.


Inherit the newly generated by System.Web.HttpApplication and copy all the method created Global.asax to Global.cs and also add an inherit attribute to the Global.asax file

Now your Global.asax will look like following:

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