This results in all state modules to save their current state data. NET page framework completes an authorization request. It allows caching modules to serve the request from the cache, thus bypassing handler execution. NET page framework completes handler execution to allow caching modules to store responses to be used to handle subsequent requests.
At this point, the user's credentials have been validated. The event list may seem daunting, but it can be useful in various circumstances. A key issue with taking advantage of the events is knowing the order in which they're triggered. The remaining events deal with application requests, and they're triggered in the following order:. A common use of some of these events is security. The following C example demonstrates various Global.
Decrypt authCookie. Write "Error encountered. This example provides a peek at the usefulness of the events contained in the Global. Consequently, any methods placed in it are available through the application's code, hence the Global name. NET applications. It provides numerous events to handle various application-wide tasks such as user authentication, application start up, and dealing with user sessions.
You should be familiar with this optional file to build robust ASP. NET-based applications. TechRepublic's free. This method, in turn, calls the RegisterRoutes method. The RegisterRoutes method creates the route table. The default route table contains a single route named Default.
The Default route maps the first segment of a URL to a controller name, the second segment of a URL to a controller action, and the third segment to a parameter named id. The Default route includes defaults for all three parameters. If you don't supply a controller, then the controller parameter defaults to the value Home. If you don't supply an action, the action parameter defaults to the value Index. Finally, if you don't supply an id, the id parameter defaults to an empty string.
Let's look at a few examples of how the Default route maps URLs to controller actions. Imagine that you enter the following URL into your browser address bar:. In Listing 2, the HomeController class includes a method named Index that accepts a single parameter named Id. The Index method in Listing 3 does not accept any parameters. In Listing 4, the Index method has one Integer parameter. Because the parameter is a nullable parameter can have the value Null , the Index can be called without raising an error.
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MSDN has an outline of the purpose of the global. Effectively, global. Once you've added the file, you can add code under any of the events that are listed and created by default, at least in Visual Studio :. It's invoked for all HttpApplication object instances. This is the ideal location for cleaning up previously used resources.
It allows you to create objects that are accessible by all HttpApplication instances. It's fired only once during an application's lifetime.
It's the first event fired for a request, which is often a page request URL that a user enters. NET page framework begins executing an event handler like a page or Web service. NET page framework is finished executing an event handler. NET page framework sends content to a requesting client browser. NET page framework gets the current state Session state related to the current request. NET page framework completes execution of all event handlers.
This results in all state modules to save their current state data. NET page framework completes an authorization request. It allows caching modules to serve the request from the cache, thus bypassing handler execution. NET page framework completes handler execution to allow caching modules to store responses to be used to handle subsequent requests.
At this point, the user's credentials have been validated. The Global. NET application file, is an optional file that contains code for responding to application-level and session-level events raised by ASP. It is an optional file that handles events raised by ASP.
NET or by HttpModules. The root directory of a web application has a special significance and certain content can be present on in that folder. Net framework uses the content in the global.
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