If you are involved in much web development, you will eventually need to work with web services or web APIs. This is a great article that summarizes a few of the different ways you can write C# code to work with these services. It covers the following methods to consume a RESTful API in C#:

• HttpWebRequest/Response class
• WebClient class
• HttpClient class
• RestSharp NuGet package
• ServiceStack Http Utils

Each of them have their own pros and cons, and article gives a good overview of them. Find out more at RESTful API in C#.