ASP.NET Introduction
ASP.NET is the latest version of Microsoft's Active Server Pages
technology (ASP).
What You Should Already Know
Before you continue you should have a basic understanding of the
following:
- WWW, HTML, XML and the basics of building Web pages
- Scripting languages like JavaScript or VBScript
- The basics of server side scripting like ASP or PHP
If you want to study these subjects first, find the tutorials on our Home
Page
What is Classic ASP?
Microsoft's previous server side scripting technology ASP (Active Server
Pages) is now often called classic ASP.
ASP 3.0 was the last version of the classic ASP.
To learn more about
classic ASP, you can study our ASP tutorial.
ASP.NET is Not ASP
ASP.NET is the next generation ASP, but it's not an upgraded version of ASP.
ASP.NET is an entirely new technology for server-side scripting. It was
written from the ground up and is not backward compatible with classic ASP.
You can read more about the differences
between ASP and ASP.NET in the next chapter of this tutorial.
ASP.NET is the major part of the Microsoft's .NET Framework.
What is ASP.NET?
ASP.NET is a server side scripting technology that enables
scripts (embedded in web pages) to be executed by an Internet server.
- ASP.NET is a Microsoft Technology
- ASP stands for Active Server Pages
- ASP.NET is a program that runs inside IIS
- IIS (Internet Information Services) is Microsoft's Internet server
- IIS comes as a free component with Windows servers
- IIS is also a part of Windows 2000 and XP Professional
What is an ASP.NET File?
- An ASP.NET file is just the same as an HTML file
- An ASP.NET file can contain HTML, XML, and scripts
- Scripts in an ASP.NET file are executed on the server
- An ASP.NET file has the file extension ".aspx"
How Does ASP.NET Work?
- When a browser requests an HTML file, the server returns the file
- When a browser requests an ASP.NET file, IIS passes the request to the ASP.NET
engine on the server
- The ASP.NET engine reads the file, line by line, and executes the scripts in the file
- Finally, the ASP.NET file is returned to the browser as plain HTML
What is ASP+?
ASP+ is the same as ASP.NET.
ASP+ is just an early name used by Microsoft
when they developed ASP.NET.
The Microsoft .NET Framework
The .NET Framework is the infrastructure for the Microsoft .NET platform.
The .NET Framework is an environment for building, deploying, and
running Web applications and Web Services.
Microsoft's first server technology ASP (Active Server Pages), was a powerful and flexible "programming language". But it was too code oriented. It was not an application framework and not an enterprise development tool.
The Microsoft .NET Framework was developed to solve this problem.
.NET Frameworks keywords:
- Easier and quicker programming
- Reduced amount of code
- Declarative programming model
- Richer server control hierarchy with events
- Larger class library
- Better support for development tools
The .NET Framework consists of 3 main parts:
Programming languages:
- C# (Pronounced C sharp)
- Visual Basic (VB .NET)
- J# (Pronounced J sharp)
Server technologies and client technologies:
- ASP .NET (Active Server Pages)
- Windows Forms (Windows desktop solutions)
- Compact Framework (PDA / Mobile solutions)
Development environments:
- Visual Studio .NET (VS .NET)
- Visual Web Developer
This tutorial is about ASP.NET.
ASP.NET 2.0
ASP.NET 2.0 improves upon ASP.NET by adding support for several new features.
You can read more about the differences between ASP.NET 2.0 and ASP.NET in
the next chapter of this tutorial.
ASP.NET 3.0
ASP.NET 3.0 is not a new version of ASP.NET. It's just the name for a new
ASP.NET 2.0 framework library with support for Windows Presentation Foundation, Windows
Communication Foundation, Windows Workflow Foundation; and Windows CardSpace.
These topics are not covered in this tutorial.
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Get Your Diploma!
W3Schools' Online Certification Program is the perfect solution for busy
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The HTML Certificate is for developers who want to document their knowledge of HTML, XHTML, and CSS.
The JavaScript Certificate is for developers who want to document their knowledge of JavaScript and the HTML DOM.
The XML Certificate is for developers who want to document their knowledge of XML, XML DOM and XSLT.
The ASP Certificate is for developers who want to document their knowledge of ASP, SQL, and ADO.
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