title: Base64-decode a string using NetEncoding in Delphi XE7?
body: <p>In Delphi XE7 Update 1, when trying to execute this code in a VCL program:  </p>
  
  <pre><code>uses System.NetEncoding;
  ...
  tempstring := TNetEncoding.Base64.Decode(tempstring);
  </code></pre>
  
  <p>I get this error message:</p>
  
  <p><img src="https://i.stack.imgur.com/5kJQ9.png" alt="Error message"></p>
  
  <p>So how can I base64-decode a string using NetEncoding?</p>