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

Storing and manipulating text


The most common type of data for variables is text. The most common types in .NET for working with text are show in the following table:

Namespace

Type

System

Char

System

String

System.Text

StringBuilder

System.Text.RegularExpressions

Regex

Getting the length of a string

Add a new console application project named Ch04_ManipulatingText.

In Visual Studio 2017, set the solution's startup project to be the current selection.

Sometimes, you need to find out the length of a piece of text stored in a string class. Modify the code to look like this:

    using static System.Console; 
 
    namespace Ch04_ManipulatingText 
    { 
      class Program 
      { 
        static void Main(string[] args) 
        { 
          string city = "London"; 
          WriteLine($"{city} is {city.Length} characters long."); 
        } 
      } 
    } 

Note

At any point during these exercises,...