Tuesday, October 11, 2011

ASP.NET interview questions: - What are Httphandlers and HttpModules and difference between them?

Differences between Httphandlers and HttpModules are as follows: -

Handlers and modules helps you inject pre-processing logic before the ASP.NET
request reaches the website.

For instance, before your request reaches any resource you would like to check
if the user has been authenticated or not.

Httphandlers is an extension based processor. In other words the pre-processing
logic is invoked depending on file extensions.

Httpmodule is an event based processor. In other words ASP.NET emits lot of
event like BeginRequest, AuthenticateRequest etc, we can write logic in those
events using Httpmodule.

View the following video on optimistic locking: -

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