Parts of an ASP.NET Web Application

ASP.NET Web Application have basically three parts as:

Content
Content files determine the appearance of a Web application. They can contain static text and images as well as
elements that are composed on the fly by the program logic (as in the case of a database query).

Types of files:
Web forms, HTML, images, audio, video, other data

Program logic
The program logic determines how the application responds to user actions. ASP.NET Web applications have a
dynamic-link library (DLL) file that runs on the server, and they can also include scripts that run on the client
machine.

Types of files:
Executable files, scripts

Configuration
The configuration files and settings determine how the application runs on the server, who has access, how errors are
handled, and other details.

Types of files:
Web configuration file, style sheets, IIS settings