title: How to reference a class in a folder in Visual Studio
body: <p>I have a beginners question regarding refactoring of code. Basically I want to move some classes around and put them in folders in the projects. Here I have made a folder called MessageTypes and a new class APERAK inside it. But how do I reference it from the main form?</p>
  
  <p><img src="https://i.stack.imgur.com/SvWF3.png" alt="enter image description here"></p>