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An Introduction to ASP.NET MVC

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Get an introduction to the Microsoft ASP.NET MVC framework and learn why you should build web applications using ASP.NET MVC.
This chapter is from the book

This chapter is from the book

  • "There is nothing permanent except change."
  • Heraclitus

This chapter provides you with an overview and introduction to the Microsoft ASP.NET MVC framework. The goal of this chapter is to explain why you should build web applications using ASP.NET MVC.

Because the ASP.NET MVC framework was designed to enable you to write good software applications, the first part of this chapter is devoted to a discussion of the nature of good software. You learn about the software design principles and patterns that enable you to build software that is resilient to change.

Finally, we discuss the architecture of an ASP.NET MVC application and how this architecture enables you to write good software applications. We provide you with an overview of the different parts of an MVC application including models, views, and controllers and also introduce you to the sample application that you get when you create a new ASP.NET MVC project.

A Story with a Moral

I still remember the day that my manager came to my office and asked me to build the Single Button Application. He explained that he needed a simple call manager application to help interviewers dial phone numbers while conducting a health survey. The call manager application would load a list of phone numbers and dial each number one-by-one when you hit a button. What could be simpler?

I said, with great earnestness and confidence, that I would have the call manager application done that same afternoon. I closed my office door, put on my cowboy hat, turned up the music, and pounded out some code. By the end of the day, I had completed the application. My manager was happy, and I went home that night with the happy thought that I had done a good day of work.

The next morning, my manager appeared again at my office door. Worried, I asked if there was a problem with the call manager application. He reassured me that the application worked fine. In fact, he liked it so much that he wanted me to add another feature. He wanted the call manager application to display a survey form when a number is dialed. That way, survey answers could be stored in the database.

With heroic determination, I once again spent the day knocking out code. By the end of the day, I had finished updating the call manager and I proudly presented the finished application to my manager.

I won't continue this story, because anyone who builds software for a living knows how this story ends. The story never ends. When a software project is brought to life, it is almost impossible to kill it. A software application needs to be continuously fed with new features, bug fixes, and performance enhancements.

Being asked to change software that you have created is a compliment. Only useless software goes stagnant. When people care about software, when software is actively used, it undergoes constant change.

I no longer work at the company where I created the call manager application. (I am currently sitting in an office at Microsoft.) But I still have friends at the company and every once in a while I get a report on how the application has changed. Needless to say, it has turned into a massively complex application that supports different time zones, complicated calling rules, and advanced reporting with charts. It can no longer be described as the Single Button Application.

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