Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By : Mark J. Price
Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By: Mark J. Price

Overview of this book

In C# 9 and .NET 5 – Modern Cross-Platform Development, Fifth 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 a new chapter on the Microsoft Blazor framework. The book’s first part teaches the fundamentals of C#, including object-oriented programming and new C# 9 features such as top-level programs, target-typed new object instantiation, and immutable types using the record keyword. Part 2 covers the .NET APIs, for performing tasks like managing and querying data, monitoring and improving performance, and working with the file system, async streams, serialization, and encryption. Part 3 provides examples of cross-platform apps you can build and deploy, such as websites and services using ASP.NET Core or mobile apps using Xamarin.Forms. The best type of application for learning the C# language constructs and many of the .NET libraries is one that does not distract with unnecessary application code. For that reason, the C# and .NET topics covered in Chapters 1 to 13 feature console applications. In Chapters 14 to 20, having mastered the basics of the language and libraries, you will build practical applications using ASP.NET Core, Model-View-Controller (MVC), and Blazor. By the end of the book, you will have acquired the understanding and skills you need to use C# 9 and .NET 5 to create websites, services, and mobile apps.
Table of Contents (23 chapters)

Using Razor class libraries

Everything related to a Razor page can be compiled into a class library for easier reuse. With .NET Core 3.0 and later, this can include static files. A website can either use the Razor page's view as defined in the class library or override it.

Creating a Razor class library

Let us create a new Razor class library:

  1. Create a subfolder in PracticalApps named NorthwindEmployees.
  2. In Visual Studio Code, add the NorthwindEmployees folder to the PracticalApps workspace.
  3. Navigate to Terminal | New Terminal and select NorthwindEmployees.
  4. In TERMINAL, enter the following command to create a Razor Class Library project:
    dotnet new razorclasslib -s

More Information: The -s option is short for --support-pages-and-views that enables the class library to use Razor Pages and .cshtml file views.

Disabling compact folders

Before we implement our Razor class library, I want...