Inside my local publish folder I have Global.asax and Global.asax.cs where Global.asax is not updated (dated one month ago) and Global.asax.cs is updated.
I check the "Build action" of the Global.asax file which is set to "Content" and Copy always in the file properties.
How to update global.asax together with global.asax.cs on publish command?
Global.asax doesn't usually change. Global.asax is compiled into a class deriving from the Global class in your Global.asax.cs.
You don't have to do anything for that. The server's compiler will pick it up itself. You just need to copy the Global.asax to your production server, where the Global.asax.cs will be compiled into an assembly.
See the MSDN:
At run time, Global.asax is parsed and compiled into a dynamically
generated .NET Framework class derived from the HttpApplication base
class. The Global.asax file itself is configured so that any direct
URL request for it is automatically rejected; external users cannot
download or view the code written within it.
So as Patrick has already mentioned, there is no need to change it. The compiler will pick it.
When you save changes to an active Global.asax file, the ASP.NET page
framework detects that the file has been changed. It completes all
current requests for the application, sends the Application_OnEnd
event to any listeners, and restarts the application domain. In
effect, this reboots the application, closing all browser sessions and
flushing all state information. When the next incoming request from a
browser arrives, the ASP.NET page framework reparses and recompiles
the Global.asax file and raises the Application_OnStart event.
Related
I have an ASP.NET application and want to process exceptions by Application_Error method in Global.asax.
In config I use customError="Off" setting.
All works fine on local or remote server. Application_Error method executes and redirects to custom error pages.
But after I deploy app in Azure, I always get default error pages (YSOD). I think, Application_Error handler in Global.asax not fires.I haven't any ideas why. Maybe Azure has special setting for choose fire this handler or not.
Can anyone explain this?
If I set customError="RemoteOnly" setting and add default redirect page, all works.
But I have business logic in my handler, therefore I want to use Application_Error method.
Oh, I finally resolve my problem. ASP NET works fine and handle exceptions, but I have app setting in web config for enable/disable custom error pages. This setting processed in Application_Error method. And Azure has app setting too, and they override settings from web config.
For more info about Azure app settings: http://blogs.msdn.com/b/martinkearn/archive/2015/10/09/using-app-settings-in-azure-web-apps.aspx
I am using IIS7.5 to force my web app to load automatically (startMode="AlwaysRunning"), and I now want to preload my cache data. I am a bit confused though because two approaches seem identical:
use Application_Start in global.asax
use serviceAutoStartProviders in IIS config files
They seem rather redundant and doing the same thing. If they are, I guess I would rather use Application_Start than create code dependencies in IIS configuration files. Any advice?
The Application_Start in the global.asax is fired when the application receives it's first request (first user or autostart) so it is not used to start the site.
Use serviceAutoStartProviders to start
http://www.asp.net/whitepapers/aspnet4#0.2__Toc253429241
The IIS Application Warm-Up Module is easier to use
http://www.iis.net/learn/get-started/whats-new-in-iis-8/iis-80-application-initialization
I want to access my windows Azure Data Cache from my Role Entry StartUp routine. However I keep getting this error:
{"ErrorCode:SubStatus:Server collection cannot be empty."}
However when I do the same from within my Controller class it loads the Data Cache fine and I can go ahead and do things with it.
Is there anything special for the Role Entry class that I have to do to access the Data Cache prior to my application starting?
Or can't I access the Cache in the Role StartUp ?
Cheers
Starting with Azure SDK 1.3, there is a major change - the Full IIS mode. Read this blog post to get full undertanding of full IIS and what is it.
In short - your RoleEntryPoint descendant (where your OnStart method is being executed) lives in whole another AppDomain (and process actually - WaIISHost.exe), while your actual web application just lives in IIS (w3wp.exe). That's why there is no way to do something in OnStart() that would affect your web applicatin or that would be able to directly read your web.config.
If you do read Azure Data Cache in OnStart to do some preload of data for the web application, just do in your Global.asax's Application_Start() event handler.
If you need to read Azure Data Cache in OnStart for reason's specific to the RoleEntryPoint, you have to load the configuration from web.config. Web.config is placed in "./bin/web.config" relative to your AppRoot folder. (there are two copies of your application when you use WebRoles with full IIS - one lives in AppRoot and one lives in SitesRoot).
Hope this helps!
WebRole's OnStart probably does not use your web.config where you probably have specified server names and access keys for your AppFabric DataCache provider.
I would try manually instrumenting the server connection configuration.
I have a class called Global that derives from HttpApplication.
Oddly, I see a lot of methods inside Global that look like:
void Application_Start(object sender, EventArgs e)
{
}
The code is definitely executing inside this method, so the method is being called from somewhere, but where? The methods aren't marked overload?
Secondly, I derived a class from Global, let's call it GlobalFoo.
Again, if I create a method called Application_Start() it will get called inside my derived class, otherwise nothing that's in Global will get called so I might as well be deriving from an empty class.
Can anyone offer any advice? Am I missing some fundamental part of ASP.NET?
so the method is being called from somewhere, but where?
This functions are called from the Application Pool (from each pool that you have assign), to signal start-up/end events of your application and help your with initializations.
Every pool that is assign to run your web application runs those functions.
asp.net is helping you create different objects/code external or not that can run together, and that's why you see that all of your registered code run. Its a help to create more than one "start up" routines that do different thinks.
This is an example, this module just check the secure protocol by him self... and you do not need to change anything on your code, just register it.
IIS calls the different Global.asax events through the asp.net isapi filter.
Perhaps this article will help explain.
The Global.asax file is an optional file used to declare and handle application and session-level events and objects for an ASP.NET web site running on an IIS Web Server
some of the key events in this file are:
Application_Init: Fires when the application initializes for the first time.
Application_Start: Fires the first time an application starts.
Session_Start: Fires the first time when a user’s session is started.
Application_BeginRequest: Fires each time a new request comes in.
Application_EndRequest: Fires when the application terminates.
Application_AuthenticateRequest: Indicates that a request is ready to be authenticated.
Application_Error: Fires when an unhandled error occurs within the application.
Session_End: Fires whenever a single user Session ends or times out.
Application_End: Fires when the application ends or times out (Typically used for application cleanup logic).
For a complete list of Global.asax events see "Global.asax Events".
How can we use global.asax in asp.net? And what is that?
MSDN has an outline of the purpose of the global.asax file.
Effectively, global.asax allows you to write code that runs in response to "system level" events, such as the application starting, a session ending, an application error occuring, without having to try and shoe-horn that code into each and every page of your site.
You can use it by by choosing Add > New Item > Global Application Class in Visual Studio. 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 2008):
Application_Start
Application_End
Session_Start
Session_End
Application_BeginRequest
Application_AuthenticateRequest
Application_Error
There are other events that you can also hook into, such as "LogRequest".
Global asax events explained
Application_Init: Fired when an application initializes or is first called. It's invoked for all HttpApplication object instances.
Application_Disposed: Fired just before an application is destroyed. This is the ideal location for cleaning up previously used resources.
Application_Error: Fired when an unhandled exception is encountered within the application.
Application_Start: Fired when the first instance of the HttpApplication class is created. It allows you to create objects that are accessible by all HttpApplication instances.
Application_End: Fired when the last instance of an HttpApplication class is destroyed. It's fired only once during an application's lifetime.
Application_BeginRequest: Fired when an application request is received. It's the first event fired for a request, which is often a page request (URL) that a user enters.
Application_EndRequest: The last event fired for an application request.
Application_PreRequestHandlerExecute: Fired before the ASP.NET page framework begins executing an event handler like a page or Web service.
Application_PostRequestHandlerExecute: Fired when the ASP.NET page framework is finished executing an event handler.
Applcation_PreSendRequestHeaders: Fired before the ASP.NET page framework sends HTTP headers to a requesting client (browser).
Application_PreSendContent: Fired before the ASP.NET page framework sends content to a requesting client (browser).
Application_AcquireRequestState: Fired when the ASP.NET page framework gets the current state (Session state) related to the current request.
Application_ReleaseRequestState: Fired when the ASP.NET page framework completes execution of all event handlers. This results in all state modules to save their current state data.
Application_ResolveRequestCache: Fired when the ASP.NET page framework completes an authorization request. It allows caching modules to serve the request from the cache, thus bypassing handler execution.
Application_UpdateRequestCache: Fired when the ASP.NET page framework completes handler execution to allow caching modules to store responses to be used to handle subsequent requests.
Application_AuthenticateRequest: Fired when the security module has established the current user's identity as valid. At this point, the user's credentials have been validated.
Application_AuthorizeRequest: Fired when the security module has verified that a user can access resources.
Session_Start: Fired when a new user visits the application Web site.
Session_End: Fired when a user's session times out, ends, or they leave the application Web site.
The Global.asax file, also known as
the ASP.NET application file, is an
optional file that contains code for
responding to application-level and
session-level events raised by ASP.NET
or by HTTP modules.
http://msdn.microsoft.com/en-us/library/2027ewzw.aspx
Global.asax is the asp.net application file.
It is an optional file that handles events raised by ASP.NET or by HttpModules. Mostly used for application and session start/end events and for global error handling.
When used, it should be in the root of the website.
The root directory of a web application has a special significance and certain content can be present on in that folder.
It can have a special file called as “Global.asax”. ASP.Net framework uses the content in the global.asax and creates a
class at runtime which is inherited from HttpApplication.
During the lifetime of an application, ASP.NET maintains a pool of Global.asax derived HttpApplication instances. When
an application receives an http request, the ASP.Net page framework assigns one of these instances to process that
request. That instance is responsible for managing the entire lifetime of the request it is assigned to and the instance
can only be reused after the request has been completed when it is returned to the pool.
The instance members in Global.asax cannot be used for sharing data across requests but static member can be.
Global.asax can contain the event handlers of HttpApplication object and some other important methods which
would execute at various points in a web application
The Global.asax can be used to handle events arising from the application. This link provides a good explanation: http://aspalliance.com/1114