title: Empty string if null
body: <p>I have this in my code:</p>
  
  <pre><code>SelectList(blah, "blah", "blah", cu.Customer.CustomerID.ToString())
  </code></pre>
  
  <p>It gives a error when it returns null, how can I make it CustomerID is an empty string if it is null? </p>
  
  <p>/M</p>