title: String.Format numbers in MVC view
body: <p>I am getting an an Exception: Input string was not in a correct format.
  When I format the phone number string</p>
  
  <pre><code> @String.Format("{0:(###) ###-####}", @Double.Parse(@item.PhoneNumber))
  </code></pre>
  
  <p>If I hardcode the phone number it works: </p>
  
  <pre><code>   @String.Format("{0:(###) ###-####}", @Double.Parse("1231111111"))
  </code></pre>
  
  <p>or </p>
  
  <pre><code>   @String.Format("{0:(###) ###-####}", 1231111111)
  </code></pre>
  
  <p>Why is it failing when I grab the value from the model?</p>
  
  <p>I want to display as: (123) 456-7890</p>