Why we need to use httphandler

Question

Hi all why we need to use httphandler? some people told like it's used to retrieve the image to show the controls. eg: the binary file stored in database table we get the value convert binary data to image url and assign the value to image control. Please tell clearly and simply. Thanks Arun.B

Vithal Wadje · Answer

An ASP.NET HTTP handler is basically a process that runs in response to a request made to an ASP.NET Web application. The most common handler is the ASP.NET page handler that processes .aspx files. When users request an .aspx file the request is processed by the page through the page handler. An HTTP module is an assembly that is called on every request that is made to your application. HTTP modules are called as part of the ASP.NET request pipeline and have access to life-cycle events throughout the request. HTTP modules let you examine incoming and outgoing requests and take action based on the request.