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)

Sweetening LINQ syntax with syntactic sugar

C# 3.0 introduced some new language keywords in 2008 in order to make it easier for programmers with experience with SQL to write LINQ queries. This syntactic sugar is sometimes called the LINQ query comprehension syntax.

More Information: The LINQ query comprehension syntax is limited in functionality. It only provides C# keywords for the most commonly used LINQ features. You must use extension methods to access all the features of LINQ. You can read more about why it is called comprehension syntax at the following link:

Consider the following array of string values:

var names = new string[] { "Michael", "Pam", "Jim", "Dwight", "Angela", "Kevin", "Toby", "Creed" };

To filter and sort the names, you could use extension methods and lambda expressions...