Sams Teach Yourself C# in 24 Hours

By James Foxall and Wendy Haro-Chun

• Table of Contents
  • Copyright
  • About the Authors
  • Acknowledgments
  • Tell Us What You Think!
  • Introduction
  • Audience and Organization
  • Conventions Used in This Book
  • Onward and Upward!
  • Part I. The Visual Studio Environment
  • Hour 1. A C# Programming Tour
  • Hour 2. Navigating C#
  • Hour 3. Understanding Objects and Collections
  • Hour 4. Understanding Events
  • Part II. Building a User Interface
  • Hour 5. Building FormsPart I
  • Hour 6. Building FormsPart II
  • Hour 7. Working with the Traditional Controls
  • Hour 8. Advanced Controls
  • Hour 9. Adding Menus and Toolbars to Forms
  • Hour 10. Drawing and Printing
  • Part III. Making Things HappenProgramming!
  • Hour 11. Creating and Calling Methods
  • Hour 12. Using Constants, Data Types, Variables, and Arrays
  • Hour 13. Performing Arithmetic, String Manipulation, and Date/Time Adjustments
  • Hour 14. Making Decisions in C# Code
    • Making Decisions Using if Statements
    • Evaluating an Expression for Multiple Values Using switch
    • Branching Within Code Using goto
    • Summary
    • Q&A
    • Workshop
  • Hour 15. Looping for Efficiency
  • Hour 16. Debugging Your Code
  • Hour 17. Designing Objects Using Classes
  • Hour 18. Interacting with Users
  • Part IV. Working with Data
  • Hour 19. Performing File Operations
  • Hour 20. Controlling Other Applications Using Automation
  • Hour 21. Working with a Database
  • Part V. Deploying Solutions and Beyond
  • Hour 22. Deploying a Solution
  • Hour 23. Introduction to Web Development
  • Hour 24. The 10,000-Foot View
  • Appendix A. Answers to Quizzes/Exercises

Workshop

The Workshop is designed to help you anticipate possible questions, review what you've learned, and get you thinking about how to put your knowledge into practice. The answers to the quiz are in Appendix A, "Answers to Quizzes/Exercises."

Quiz

1. Which decision construct should you use to evaluate a single expression to either true or false?
2. Evaluating expressions to true or false for both types of decision constructs is accomplished using ________ logic.
3. If you want code to execute when the expression of an if statement evaluates to false, include an ____ clause.
4. Which decision construct should you use when evaluating the result of an expression that may equate to one of many possible values?
5. Is it possible that more than one case statement may have its code execute?
6. True or False: You can use goto to jump code execution to a different method.
7. To use goto to jump execution to a new location in code, what must you create as a pointer to jump to?

Exercises

1. Create a project that allows the user to enter text into a text box. Use an if construct to determine whether the text entered is Circle, Triangle, Square, or Pentagon, and display the number of sides the entered shape has. If the text doesn't match one of these shapes, let the users know that they must enter a shape.
2. Rewrite the following code using only an if structure; the new code should not contain a goto.

   ...
   if (!blnAddToAge) goto SkipAddToAge;
   lngAge++;
   SkipAddToAge:
   ...
   

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