This article introduces creating Balloon Tooltips, using available standard APIs. Balloon Tooltips can be very useful sometimes, however if used improperly can be painful for the user. Simply put, the code creates different types of balloon Tooltips.
Article mainly concentrate on the WPF Baloon controls with code samples.
Reference Links .
http://www.codeproject.com/csharp/BalloonTipsArticle.asp
http://www.codeproject.com/cs/miscctrl/balloonnet.asp
For WPF Baloon Control Code Sample please Find the attached Link.