title: How to add/use C# libraries in JetBrains Rider?
body: <p>I am trying to use <code>HttpClient</code> client however I am unable to use <code>using System.Net.Http;</code>. How to correctly use C# libraries in JetBrains Rider?</p>
  
  <p><a href="https://i.stack.imgur.com/g5LQ0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/g5LQ0.png" alt="enter image description here"></a></p>
  
  <p>The os is linux.</p>