Where to find the nifty Textbox with the grayed out instruction?

Question

While logging in to msn-messenger you have these nifty textboxes that show you what to type (username, password) in gray text. Once you start typing it disappears. This surely is not hard to implement using a user control in WPF, but is this control/behaviour already available?

Answer 1

Not that I'm aware, but I haven't spend much time with SL3 yet, but here is an article of how to implement it.

Answer 2

This is called a "watermark textbox". Here's a code sample:

http://vistasquad.co.uk/blogs/nondestructive/archive/2009/01/02/wpf-textbox-with-watermark.aspx