title: Add placeholder to textbox control for password c# winforms
body: <p>How to add a placeholder to a c# winform control?</p>
  
  <p>When control lost focus and control text is <code>null</code>, I would like the placeholder to appear.</p>
  
  <p>When textbox is <code>UsePasswordChar true</code>, It still shows the placeholder (in clear text), and when the user starts to write, it shows password characters.</p>
  
  <p>Any idea?</p>