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)

Building components using Blazor WebAssembly

Now we will build the same functionality using Blazor WebAssembly so that you can clearly see the key differences.

Since we abstracted the local dependency service in the INorthwindService interface, we will be able to reuse all the components and that interface, as well as the entity model classes, and just rewrite the implementation of the NorthwindService class and create a customer controller for its implementation to call for Blazor WebAssembly, as shown in the following diagram:

Figure 20.9: Comparing Blazor implementations using Server and WebAssembly

Configuring the server for Blazor WebAssembly

First, we need to build a service that the client app can call using HTTP:

Warning! All relative path references for projects and the database are two levels up, for example, "..\..\".

  1. In the Server project, open NorthwindBlazorWasm.Server.csproj, and add statements to reference...