title: How can I check if a string is a number?
body: <p>I'd like to know on C# how to check if a string is a number (and just a number).</p>
  
  <p>Example :</p>
  
  <pre><code>141241   Yes
  232a23   No
  12412a   No
  </code></pre>
  
  <p>and so on...</p>
  
  <p>Is there a specific function?</p>