Silverlight Hierarchical DataGrid; TreeList DataGrid in pure Silverlight

The purpose of this sample code is to create a DataGrid which rows can be expanded. In others words a combination of DataGrid and a TreeList.

Original post is available here:

http://blogs.perpetuumsoft.com/silverlight/how-to-turn-silverlight-datagrid-to-treegrid-in-15-minutes/

I just converted the project from VS2008 to VS2010&SL4:

http://sites.google.com/site/bkosarzyckistorage1/HierarchicalGridDemoVisualStudio2010.7z