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)

Implementing advanced features

Now that you have seen the fundamentals of building a web service and then calling it from a client, let us look at some more advanced features.

Implementing a Health Check API

There are many paid services that perform site availability tests that are basic pings, some with more advanced analysis of the HTTP response.

ASP.NET Core 2.2 and later makes it easy to implement more detailed website health checks. For example, your website might be live, but is it ready? Can it retrieve data from its database?

  1. Open NorthwindService.csproj.
  2. In the <ItemGroup> for the Swashbuckle package, add a project reference to enable Entity Framework Core database health checks, as shown in the following markup:
    <PackageReference Include=
      Version="5.0.0" />
  3. In TERMINAL, restore packages and compile the website project...