Application Settings Files
ASP.NET applications can be configured through two different file-based mechanisms:
global.asax— Global application setting file.
web.config— XML-based application configuration file.
The global.asax File
The global.asax file has two main purposes:
To enable you to define application- and session-wide variables, objects, and data.
To enable you to define event handlers for application- and session-based events that happen in the scope of the application.
Directives Used in the global.asax File
The global.asax file can include the following possible elements:
The @Assembly directive— Is used to register a compiled assembly with the web application; another way to register assemblies is to use the web.config file, ...