title: Operator '+' cannot be applied to operands of type "string" and "method group"
body: <p>I am checking to see if a Directory exists with this code: </p>
  
  <pre><code>while (Directory.Exists(currentDirectory + year.ToString))
  {
    // do stuff
    year++;
  }
  </code></pre>
  
  <p>year is a normal integer, currentDirectory a string. Unfortunately this Operation gives me the 
  "Operator '+' cannot be applied to operands of type "string" and "method group"
   error mesage. I don't really want to create a new string on each Iteration when I only need to increment.</p>