Introduction to Reactive Extensions in C#

Reactive Extensions (Rx) is a library for composing asynchronous and event-based programs using observable collections and LINQ-style query operators in C#. It provides a convenient way of dealing with asynchronous data streams and enables you to create reactive applications in a concise and expressive manner.

In this article, we will take a look at how to use Reactive Extensions in C#.

Installation

To start using Rx in your C# projects, you need to install the System.Reactive NuGet package. You can do this by using the NuGet Package Manager Console and running the following command:

Install-Package System.Reactive

Creating observables

The core concept in Rx is the observable. An observable represents a stream of values that can be observed over time. You can think of an observable as a collection that is updated asynchronously.

There are different ways to create observables in Rx. Here are a few examples:

Creating observables from events

One way to create observables is by using events. For example, consider the following code:

var button = new Button();
var clicks =…