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
    • Performing Basic Arithmetic
    • Comparing Equalities
    • Understanding Boolean Logic
    • Manipulating Strings
    • Working with Dates and Times
    • Summary
    • Q&A
    • Workshop
  • Hour 14. Making Decisions in C# Code
  • 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

Hour 13. Performing Arithmetic, String Manipulation, and Date/Time Adjustments

Just as arithmetic is a necessary part of everyday life, it's also vital to developing Windows programs. You probably won't write an application that doesn't add, subtract, multiply, or divide some numbers. In this hour, you'll learn how to perform arithmetic in code. You'll also learn about order of operator precedence, which determines how C# evaluates complicated expressions (or equations). After you understand operator precedence, you'll learn how to compare equalities—something you'll do all the time.

The highlights of this hour include the following:

• Performing arithmetic
• Understanding the order of operator precedence
• Comparing equalities
• Understanding Boolean logic
• Manipulating strings
• Working with dates and times

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