VIBlend Input Controls for WPF includes a set of user interface controls that simplify text entry, editing and validation.
Data input is an important part of almost every business application. This package is ideal for building desktop interfaces
that capture various types of text input like currency, percentages, numeric,
date and time values, masked text, and others. VIBlend Input Controls for WPF main features include internationalization and
localization support, unlimited undo/redo, .NET format strings and more.

Download link: http://www.viblend.com/downloads.aspx