title: What's the opposite of "is"?
body: <pre><code>if(myVariable is SomeType)
  </code></pre>
  
  <p>Out of nothing but curiosity, what's the opposite of that?  I want to do something like:</p>
  
  <pre><code>if(!myVariable is SomeType)
  if(myVariable is not SomeType)
  </code></pre>
  
  <p>Neither compile.</p>
  
  <p>Given that "is" is a non-searchable word in most engines, this has been a hard one to find an answer to.</p>
  
  <blockquote>
    <p><strong>Duplicate:</strong> </p>
    
    <p><a href="https://stackoverflow.com/questions/811614/c-is-keyword-and-checking-for-not">C# : ‘is’ keyword and checking for Not</a></p>
  </blockquote>