private NDocumentBlock CreateTextDocument()
{
  NDocumentBlock document = new NDocumentBlock();

  // Create a paragraph
  NParagraph paragraph = new NParagraph();
  paragraph.Inlines.Add(new NTextInline("The following is a hyperlink that shows a message box when clicked:"));
  paragraph.Inlines.Add(new NLineBreakInline());

  // Add a hyperlink inline and subscribe to its MouseDown event
  NHyperlinkInline hyperlinkInline = new NHyperlinkInline("Click me to show a message box");
  hyperlinkInline.MouseDown += OnHyperlinkInlineMouseDown;
  paragraph.Inlines.Add(hyperlinkInline);

  // Create a section and add the paragraph to it
  NSection section = new NSection();
  section.Blocks.Add(paragraph);
  document.Sections.Add(section);

  return document;
}

private void OnHyperlinkInlineMouseDown(NMouseButtonEventArgs arg)
{
  if (arg.Button == ENMouseButtons.Left && !arg.Cancel)
  {
   // Show a message box
   NMessageBox.Show("Hyperlink clicked", "Message");

   // Mark the event as handled
   arg.Cancel = true;
  }
}