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

Summary

In this hour you learned how to use C#'s decision constructs to make decisions in C# code. You learned how to use if statements to execute code when an expression evaluates to true and to use else to run code when the expression evaluates to false. For more complicated decisions, you learned how to use else…if to add further comparisons to the decision construct and nest if structures for more flexibility.

In addition to if, you learned how to use switch to create powerful decision constructs to evaluate a single expression for many possible values. You learned how you can check for multiple possible values using a fall through case statement. Finally, you learned how to use goto to jump to any predefined position in code.

Decision-making constructs are often the backbone of applications. Without the capability to run specific sets of code based on fluctuating situations, your code would be very linear and hence very limited. Get comfortable with the decision constructs and make a conscious effort to use the best construct for any given situation. The better you are at writing decision constructs, the faster you'll be able to product solid and understandable code.

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