In this article, Emiel Jongerius demonstrates how to drag column headers to the area above the grid to group the data to the
Silverlight DataGrid.
Source: On developing Pochet.NET
The DataGrid of the Silverlight Toolkit supports grouping but does not have the ability to drag column headers to the area above the grid to group the data, unlike some other 3rd party datagrids.
This blog presents a solution to implement this functionality. The solution is based upon the solution which can be found on the blog Lee’s corner.