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 this chapter's topics.

Exercise 3.1 – Test your knowledge

Answer the following questions:

  1. What happens when you divide an int variable by 0?
  2. What happens when you divide a double variable by 0?
  3. What happens when you overflow an int variable, that is, set it to a value beyond its range?
  4. What is the difference between x = y++; and x = ++y;?
  5. What is the difference between break, continue, and return when used inside a loop statement?
  6. What are the three parts of a for statement and which of them are required?
  7. What is the difference between the = and == operators?
  8. Does the following statement compile? for ( ; true; ) ;
  9. What does the underscore _ represent in a switch expression?
  10. What interface must an object implement to be enumerated over by using the foreach statement...