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Difference Between Web.Config file and Global.asax ?

Posted By :Srikanth     Posted Date :April 22, 2011    Points :40   Category :ASP.Net 
Web.Config file is used ....

1. To specify the application settings
2. To specify the session mechanism available to use for that application.
3. To Specify the Connection strings.
4. To Specify the authentication and authorization.
5. To Specify the http handlers.
6. To Specify different providers.

Global.asax file is used to specify the session and application event handlers.


You can also find related Interview Question to Difference Between Web.Config file and Global.asax ?  below: 

What is the difference between web.config and global.asax?

  
web.config:- It is a xml based file.
glbal.asax:- It is class file.

web.config:- It carries configuration data of the ASP.Net website.
global.asax:- It carries application events of the ASP.Net website.

web.config:- If there will be any change made on this file, we need to just save the new file with the ASP.Net website.
global.asax:- If there will be any change made on this file, we need to compile/rebuild the ASP.Net website. (More...)

List major events in GLOBAL.ASAX file ?

  
Application_Init:
Application_Disposed:
Application_Error:
Application_Start:
Application_End:
Application_BeginRequest:
Application_EndRequest:
Application_PreRequestHandlerExecute:
Application_PostRequestHandlerExecute:
Applcation_PreSendRequestHeaders:
Application_PreSendContent:
Application_AcquireRequestState:
Application_ReleaseRequestState:
Application_ResolveRequestCache:
thus bypassing handler execution.
Application_UpdateRequestCache:
Application_AuthenticateRequest:
Application_AuthorizeRequest:
Session_Start:
Session_End:
Web site. (More...)

What's the significance of "GLOBAL.ASAX" file ?

  
GLOBAL.ASAX allows us to executing ASP.NET application level events and setting application-level variables. (More...)

what is the use of using web.config file

  
By using this web.config file we can store sqlconnection string.This SqlConnection String can be accessed any where in your application.for security purpose of connection string also we can use web.config. (More...)

Can we have more than one web.config file in our application?

  
Yes,we can create or use more than one web.config file in our application. (More...)

if we remove a web.config file from the application , is this application will work?

  
It Depends on coding if we used something that is required to pioc values from configuration file then its required otherwise we can run our application without web.config. (More...)

Can i add more than 1 web.config file in a single application?

  
Yes, it is possible to add more than 1 web.config file in a single application. (More...)

Is it possible to add multiple Machine.config file?

  
No, it is not possible to add more than 1 machine.config file. if we want to overwrite any setting than that can be achieve with the help of web.config. (More...)

Is it possible to update a connection string stored in the Web.config file programatically? If Yes, then how?

  
Yes.

Create a Configuration object. Then, update the connection string using the ConnectionStrings collection. Finally, call Configuration.Save. (More...)

List the event handlers that can be included in Global.asax?

  
o Application start and end event handlers
o Session start and end event handlers
o Per-request event handlers
o Non-deterministic event handlers (More...)

How do you retrieve the customized properties of a .NET application from XML .config file?

  
Initialize an instance of AppSettingsReader class. Call the GetValue method of AppSettingsReader class, passing in the name of the property and the type expected. Assign the result to the appropriate variable. (More...)

Why is Global.asax is used for ?

  
Global.asax is used To implement application & Session level events (More...)

difference between backup file and .stp file in sharepoint site

  
A backup file is more like a DB snapshot (if you are talking about the backup operation of STSADM)

You can save a site with our without content as template and can create other sites based upon that site template. For that first you have to save your site as a template which will be saved with extension .STP, OOB there is limitation of 10MB in size but u can increase the size upto 2 GB using STSADM command. (More...)

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