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)

Building mobile apps using Xamarin.Forms

We will build a mobile app that runs on either iOS or Android for managing customers in Northwind.

Good Practice: If you have never run Xcode, run it now to see the Start window to ensure that all its required components are installed and registered. If you do not run Xcode, then you might get errors with your projects later in Visual Studio for Mac.

Adding Android SDKs

To target Android, you must install at least one Android SDK. A default installation of Visual Studio for Mac already includes one Android SDK, but it is often an older version to support as many Android devices as possible.

To use the latest features of Xamarin.Forms, you must install a more recent Android SDK:

  1. Start Visual Studio for Mac and navigate to Visual Studio | Preferences.
  2. In Preferences, navigate to Projects | SDK Locations | Android, and select the Android Platform SDK and System Image that you want, for example, Android...