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Visual C#® 2012: How to Program, Fifth Edition by Harvey Deitel, Paul Deitel

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23.1. Introduction

In this chapter, we introduce web-app development with Microsoft’s ASP.NET technology. Web-based apps create web content for web-browser clients.

We present several examples that demonstrate web-app development using Web Forms, web controls (also called ASP.NET server controls) and Visual C# programming. Web Form files have the filename extension .aspx and contain the web page’s GUI. You customize Web Forms by adding web controls including labels, textboxes, images, buttons and other GUI components. The Web Form file represents the web page that’s sent to the client browser. We often refer to Web Form files as ASPX files.

An ASPX file created in Visual Studio has a corresponding class written in a .NET language—we use Visual ...

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