Book Image

The C# Workshop

By : Jason Hales, Almantas Karpavicius, Mateus Viegas
4 (2)
Book Image

The C# Workshop

4 (2)
By: Jason Hales, Almantas Karpavicius, Mateus Viegas

Overview of this book

C# is a powerful, versatile language that can unlock a variety of career paths. But, as with any programming language, learning C# can be a challenging process. With a wide range of different resources available, it’s difficult to know where to start. That's where The C# Workshop comes in. Written and reviewed by industry experts, it provides a fast-paced, supportive learning experience that will quickly get you writing C# code and building applications. Unlike other software development books that focus on dry, technical explanations of the underlying theory, this Workshop cuts through the noise and uses engaging examples to help you understand how each concept is applied in the real world. As you work through the book, you'll tackle realistic exercises that simulate the type of problems that software developers work on every day. These mini-projects include building a random-number guessing game, using the publisher-subscriber model to design a web file downloader, creating a to-do list using Razor Pages, generating images from the Fibonacci sequence using async/await tasks, and developing a temperature unit conversion app which you will then deploy to a production server. By the end of this book, you'll have the knowledge, skills, and confidence to advance your career and tackle your own ambitious projects with C#.
Table of Contents (10 chapters)

Your Own Client

So far, you've only used a premade client to consume a Web API. However, for less popular APIs, there will not be any client for you to use. In those cases, you will have to make HTTP calls yourself. In .NET, the way of making calls has evolved quite a lot. If you don't want any third-party libraries, you can use the HttpClient class.

HttpClient

In this section, you'll repeat the GitHub Users example (from the Postman section), but this time using HttpClient. The flow for this is quite simple and is described for you in detail in the following example:

  1. Within the GitHttp static class, create the GetUser method:
    public static async Task GetUser()
  2. Within the GitExamples method, first, create a client:
    client = new HttpClient { BaseAddress = new Uri("https://api.github.com") };
    client.DefaultRequestHeaders.Add("User-Agent", "Packt");

Creating a client almost always involves specifying a specific base URL...