title: Convert class to dynamic and add properties
body: <p>I have a class <code>MyClass</code>. I would like to convert this to a dynamic object so I can add a property.</p>
  
  <p>This is what I had hoped for:</p>
  
  <pre><code>dynamic dto = Factory.Create(id);
  dto.newProperty = "123";
  </code></pre>
  
  <p>I get the error: </p>
  
  <pre><code>WEB.Models.MyClass does not contain a definition for 'newProperty'
  </code></pre>
  
  <p>Is that not possible?</p>