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
    • Working with Controls
    • Creating TopMost Windows
    • Creating Transparent Forms
    • Creating Scrollable Forms
    • Creating MDI Forms
    • Setting the Startup Object
    • Summary
    • Q&A
    • Workshop
  • 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
  • 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

Setting the Startup Object

The Startup object in Windows Applications is, by default, the first form added to the project. This also happens to be the form that C# creates automatically when you create the new Windows Application project. Although the Startup object of a project was discussed briefly in a previous hour, it's worth mentioning here as well. Every project must have a Startup object as the entry point to the program.

The class that contains the Main() method that you want called as the entry point of the application is determined by the Startup Object property. You can change the Startup object by right-clicking the project name in the Solution Explorer and choosing Properties. The Startup Object property appears on the first property page that displays (see Figure 6.22).

Figure 6.22 The Startup Object property determines the first class that gets initialized and executed.

If MDI forms still confuse you, don't worry. Most of the applications you'll write as a new C# programmer will be SDI programs. As you become more familiar with creating C# projects in general, start experimenting with MDI projects. Remember, you don't have to make a program a MDI program simply because you can; make a MDI program if the requirements of the project dictate that you do so.

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