Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By : Mark J. Price
Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By: Mark J. Price

Overview of this book

C# 7.1 and .NET Core 2.0 – Modern Cross-Platform Development, Third Edition, is a practical guide to creating powerful cross-platform applications with C# 7.1 and .NET Core 2.0. It gives readers of any experience level a solid foundation in C# and .NET. The first part of the book runs you through the basics of C#, as well as debugging functions and object-oriented programming, before taking a quick tour through the latest features of C# 7.1 such as default literals, tuples, inferred tuple names, pattern matching, out variables, and more. After quickly taking you through C# and how .NET works, this book dives into the .NET Standard 2.0 class libraries, covering topics such as packaging and deploying your own libraries, and using common libraries for working with collections, performance, monitoring, serialization, files, databases, and encryption. The final section of the book demonstrates the major types of application that you can build and deploy cross-device and cross-platform. In this section, you'll learn about websites, web applications, web services, Universal Windows Platform (UWP) apps, and mobile apps. 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.
Table of Contents (31 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
2
Part 1 – C# 7.1
8
Part 2 – .NET Core 2.0 and .NET Standard 2.0
16
Part 3 – App Models
22
Summary
Index

Writing and calling methods


Methods are type members that execute a block of statements.

A method that performs some actions, but does not return a value indicates this by showing that it returns the void type before the name of the method. A method that performs some actions and returns a value indicates this by showing that it returns the type of that value before the name of the method.

For example, you will create two methods:

  • WriteToConsole: This will perform an action (writing a line), but it will return nothing from the method, indicated by the void keyword
  • GetOrigin: This will return a string value, indicated by the string keyword

Inside the Person class, statically import System.Console, and then add the following code:

// methods 
public void WriteToConsole() 
{ 
   WriteLine($"{Name} was born on {DateOfBirth:dddd, d MMMM yyyy}"); 
} 
 
public string GetOrigin() 
{ 
   return $"{Name} was born on {HomePlanet}"; 
} 

Inside the Main method, add the following code:

p1.WriteToConsole(); 
WriteLine...