title: Converting space to "+" using C#
body: <p>I want to convert a string to an url and, instead of a space, it needs a "+" between the keywords.</p>
  
  <p>For instance: </p>
  
  <pre><code>"Hello I am"
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>"Hello+I+am"
  </code></pre>
  
  <p>How should i do this?</p>