Book Image

C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development - Fourth Edition

By : Mark J. Price
Book Image

C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development - Fourth Edition

By: Mark J. Price

Overview of this book

In C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development, Fourth Edition, expert teacher Mark J. Price gives you everything you need to start programming C# applications. This latest edition uses the popular Visual Studio Code editor to work across all major operating systems. It is fully updated and expanded with new chapters on Content Management Systems (CMS) and machine learning with ML.NET. The book covers all the topics you need. Part 1 teaches the fundamentals of C#, including object-oriented programming, and new C# 8.0 features such as nullable reference types, simplified switch pattern matching, and default interface methods. Part 2 covers the .NET Standard APIs, such as managing and querying data, monitoring and improving performance, working with the filesystem, async streams, serialization, and encryption. Part 3 provides examples of cross-platform applications you can build and deploy, such as web apps using ASP.NET Core or mobile apps using Xamarin.Forms. The book introduces three technologies for building Windows desktop applications including Windows Forms, Windows Presentation Foundation (WPF), and Universal Windows Platform (UWP) apps, as well as web applications, web services, and mobile apps.
Table of Contents (21 chapters)

Practicing and exploring

Test your knowledge and understanding by answering some questions, get some hands-on practice, and explore with deeper research into the topics covered in this chapter.

Exercise 4.1 – Test your knowledge

Answer the following questions. If you get stuck, try Googling the answers if necessary:

  1. What does the C# keyword void mean?
  2. How many parameters can a method have?
  3. In Visual Studio Code, what is the difference between pressing F5, Ctrl or Cmd + F5, Shift + F5, and Ctrl or Cmd + Shift + F5?
  4. Where does the Trace.WriteLine method write its output to?
  5. What are the five trace levels?
  6. What is the difference between Debug and Trace?
  7. When writing a unit test, what are the three A's?
  8. When writing a unit test using xUnit, what attribute must you decorate the test methods with?
  9. What dotnet command executes xUnit tests?
  1. What is TDD?

Exercise 4.2 – Practice writing functions with debugging...