title: Dynamic Object - How to tell if a property is defined?
body: <p>I have a dynamic object that looks as follows:</p>
  
  <pre><code>this.ChartDetails.Chart
  </code></pre>
  
  <p>'Chart' is dynamic. I want to see if a dynamic property exists on Chart named LeftYAxis. What is the best way to do this on dynamic objects?</p>
  
  <p>I don't think this is a duplicate of <a href="https://stackoverflow.com/questions/2839598/how-to-detect-if-a-property-exists-on-a-dynamic-object-in-c">How to detect if a property exists on an ExpandoObject?</a> because it doesn't discuss the best method to do this for dynamic objects.</p>