title: How do I pass a 'null' action
body: <p>I have the following function definition</p>
  
  <pre><code>private void DoExport(Action&lt;ColumnView, bool&gt; UpdateColumns)  
  {  
  ...  
  }
  
  private void UpdateNonPrintableColumns(ColumnView view, bool visible)  
  {  
  ...  
  }   
  </code></pre>
  
  <p>Example of it being called:</p>
  
  <pre><code>DoExport(UpdateNonPrintableColumns);
  </code></pre>
  
  <p>My question is. How do I pass a 'null' action? Is it even possible?</p>
  
  <p>e.g.<br>
  <del><code>DoExport(null);  &lt;- Throws exception</code></del></p>
  
  <p>DoExport(null) causes an exception to be thrown when the action gets called in the function body</p>