title: string builder apending URLs and Variables
body: <p>I am trying to create a properly formed URL using variables with the string builder:</p>
  
  <pre><code>strB.AppendLine("&lt;a href='http://www.facebook.com/' + col1 + "&gt;" + ""Link&lt;/a&gt;");
  </code></pre>
  
  <p>But what am I doing wrong? Please can you help me fix it?</p>
  
  <p><code>col</code> is where i store my value for the Facebook username.</p>
  
  <p>I thought it was obvious? But the problem is that i get a badly formatted URL.</p>