title: Displays the contents of php in RichTextBox
body: <p>Tell me how I can bring this line</p>
  
  <pre><code>   Properties.Settings.Default.api_url + "?skey=" + Properties.Settings.Default.skey_api + "&amp;news";
  </code></pre>
  
  <p>in RichTextBox?</p>
  
  <p>This line is the site address and file that reads the information from the database and outputs the text that I want to display in the RichTextBox</p>