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In this chapter you learned how to use the life cycle to create an ASPNET web page application The life cycle defines five phases: design, development, testing, implementation, and maintenance Each application that you build will pass through each of these phases The design phase is when you identify the objective of the application and specifically how it achieves that objective The development phase translates the design into a working application The testing phase tracks down bugs and design flaws and fixes them The implementation phase turns off the old application and turns on the new application The maintenance phase is where minor modifications are made to the application to conform to changes in the business You also learned in this chapter how to identify the elements in your code by using the ID property and how to change the value of a property In addition, you learned how to read the value the user entered into a text box and use that value within the code of your application Now that you know how to build a simple ASPNET web page application, we'll move on to learn new programming techniques that are used to create commercial
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ASPNET web page applications In the next chapter, you'll learn about variables and expressions Variables are used to store information into memory, and expressions are used to manipulate that information within your application
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Quiz
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1 The ID property is a Used as the text for an element b Used as the value for an element
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c Used to uniquely ID an element d None of the above 2 The design phase is where you write code for your application a True b False
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3 You prevent a visitor from changing the value of a text box element by
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a Setting the Visible property b Setting the Invisible property c Setting the ReadOnly property to True d None of the above 4 Values can be combined by using a The equal sign b The assignment operator c The equivalence operator d The plus sign 5 You store information into a text box from within your code by using a The equal sign b The copy property c The equivalence operator d The plus sign 6 The testing phase is where bugs are discovered and fixed a True b False
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Building an ASPNET Web Page Application
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7 You create an event handler for a button control by double-clicking a button on the Design tab
a True b False 8 You can change the property of an element by a Using the Property pane b Using the Visible property of the element c Using the ReadOnly property of the element
d None of the above
9 CreateAccountVisible = False means
a Making an element visible b Making an element invisible c Making an element accessible d None of the above 10 Literal values must be enclosed with quotations in your code a True b False
Answers
1 c Used to uniquely ID an element
2 3 4 5 6 7 8 9 10
b False c Setting the ReadOnly property to True d The plus sign a The equal sign a True a True a Using the Property pane b Making an element invisible a True
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CHAPTER
Variables and
tmressi ons
i n ASPNET
The brain behind every ASPNET application is the code executed by the ASPNET engine that processes and responds to requests from visitors to a web site As you ve seen in previous chapters, code consists of instructions that tell the ASPNET engine how to process and respond to requests Your job is to write that code Code for ASPNET web pages is written using one of two programming lanA guages: Visual Basic NET or C# programming language is similar to English in that it has words that are grouped to form sentences Throughout this book you ll learn how to write the words and sentences of Visual Basic NET to tell ASPNET what to do when a request is received from a visitor to your web site In this chapter, we ll explore the foundation of nearly every line of code that you ll write These are the values, variables, and expressions that are used beginning
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