Book Image

C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition

Book Image

C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition

Overview of this book

If you want to build powerful cross-platform applications with C# 7 and .NET Core, then this book is for you. First, we’ll run you through the basics of C#, as well as object-oriented programming, before taking a quick tour through the latest features of C# 7 such as tuples, pattern matching, out variables, and so on. After quickly taking you through C# and how .NET works, we’ll dive into the .NET Standard 1.6 class libraries, covering topics such as performance, monitoring, debugging, serialization and encryption. The final section will demonstrate the major types of application that you can build and deploy cross-device and cross-platform. In this section, we’ll cover Universal Windows Platform (UWP) apps, web applications, mobile apps, and web services. Lastly, we’ll look at how you can package and deploy your applications so that they can be hosted on all of today’s most popular platforms, including Linux and Docker. By the end of the book, you’ll be armed with all the knowledge you need to build modern, cross-platform applications using C# and .NET Core.
Table of Contents (24 chapters)
C# 7 and .NET Core: Modern Cross-Platform Development - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Controlling access with properties and indexers


Earlier, you created a method named GetOrigin that returned a string containing the name and origin of the person. Languages such as Java do this a lot. C# has a better way: properties.

A property is simply a method (or pair of methods) that act look and like a field when you want to get or set a value, thereby simplifying the syntax.

Defining read-only properties

In the Person2.cs file, inside the Person class, add the following code to define three properties:

  • The first property will perform the same role as the GetOrigin method using the property syntax that works with all versions of C# (although, it uses the C# 6 and later string interpolation syntax).

  • The second property will return a greeting message using the C# 6 and later lambda expression (=>) syntax.

  • The third property will calculate the person's age.

Here is the code:

    // property defined using C# 1 - 5 syntax 
    public string Origin 
    { 
      get 
    ...