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.Net Overview

The Pieces of .Net

• .NET is a framework that covers all the layers of software development down to the operating system.
   
• .NET integrates presentation, component, and data technologies.
   
• The .Net architecture has been created to make it as easy to develop Internet applications as it is to develop desktop applications.
   
• .Net Components:
   
  
  1. ASP.Net
      
     
     Web Forms
      
     Web Services
      
     ASP.NET Application Services
      
     
  2. Windows Forms
      
     
     Drawing
      
     Controls
      
     Windows Application Services
      
     
  3. .NET Framework Base Classes
      
     
     Database
      
     Diagnostics
      
     File IO
      
     XML
      
     Security
      
     Threading
      
     
  4. Common Language Runtime
      
     
     Class Loader
      
     Common Type System
      
     Just-in-time Compiler
      
     Memory Management
     

Some types of .Net applications

• Console Application   Shows output in a Command Prompt Window.
   
• Windows Form   Shows output in a desktop application Window.
   
• ASP.Net   Shows output in a Web browser.

The CLR Compilation Process

• Take a source code file written in C#, Visual Basic, C++ or other .Net language and compile it into a MSIL (Microsoft Intermediate Language) binary file.
   
• Take the MSIL file and use the JIT (just-in-time compiler) to convert it to native machine code that can be run on the server.
   
• For web applications, this native machine code creates an HTML file with JavaScript that is sent to the client.