ASP.NET Overview
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2010-04-22
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ASP.NET Overview
ASP.NET is a unified Web development model that includes the services
necessary for you to build enterprise-class Web applications with a minimum of
coding. ASP.NET is part of the .NET Framework, and when coding ASP.NET
applications you have access to classes in the .NET Framework. You can code your
applications in any language compatible with the common language runtime (CLR),
including Microsoft Visual Basic, C#, JScript/.NET, and J#. These languages enable
you to develop ASP.NET applications that benefit from the common language
runtime, type safety, inheritance, and so on.
· 1.A page and controls framework
The ASP.NET page and controls framework is a programming framework that
runs on a Web server to dynamically produce and render ASP.NET Web pages.
ASP.NET Web pages can be requested from any browser or client device, and
ASP.NET renders markup (such as HTML) to the requesting browser. As a rule, you
can use the same page for multiple browsers, because ASP.NET renders the
appropriate markup for the browser making the request. However, you can design
your ASP.NET Web page to target a specific browser, such as Microsoft Internet
Explorer 6, and take advantage of the features of that browser. ASP.NET supports
mobile controls for Web-enabled devices such as cellular phones, handheld
computers, and personal digital assistants (PDAs).
ASP.NET Web pages are completely object-oriented. Within ASP.NET Web
pages you can work with HTML elements using properties, methods, and events. The
ASP.NET page framework removes the implementation details of the separation of
client and server inherent in Web-based applications by presenting a unified model for
responding to client events in code that runs at the server. The framework also
automatically maintains the state of a page and the controls on that page during the
page processing life cycle.
The ASP.NET page and controls framework also enables you to encapsulate
common UI functionality in easy-to-use, reusable controls. Controls are written once,
can be used in many pages, and are integrated into the ASP.NET Web page that they
are placed in during rendering.
The ASP.NET page and controls framework also provides features to control the
overall look and feel of your Web site via themes and skins. You can define themes
and skins and then apply them at a page level or at a control level.
In addition to themes, you can define master pages that you use to create a
consistent layout for the pages in your application. A single master page defines the
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