title: Regex to Exclude Double spaces
body: <p>I am looking for a regular expression for c# asp.net 3.5 that will fail if there are ever any double spaces in a sentence or group of words.</p>
  
  <pre><code>the cat chased the dog = true
  the  cat  chased  the dog = false (doubles spaces occur at random intervals)
  </code></pre>
  
  <p>thanks</p>