title: Understanding RTF and edit it with vb.net
body: <p>I have this RichTextbox in my vb.net form and I would like to when a user click a button, for example to embold the selected text, how would I do this.</p>
  
  <p>Also, I do NOT want to use the standard vb.net expressions such as <code>RichTextBox1.SelectedText.Font.Bold = True</code>. I want to do something like <code>RichTextbox1.SelectedRTF="[bold]" &amp; RichTextBox1.SelectedRTF &amp; "[/bold]"</code> or whatever RTF looks like.</p>
  
  <p>Can I just add the RTF options random places or can a RichTextBox return an error if the text is in wrong format. I'm mostly looking for info on how to work with RTF without using the standard vb expressions. Thank you very much for any help provided</p>