Which examples were you talking about?
You can look here: http://doc.xceedsoft.com/products/XceedGrid/Master_Detail.html
You can also investigate this area: http://doc.xceedsoft.com/products/XceedGrid/Building_a_bound_hierarchical_master_detail_grid.html
or in the case of unbound data, http://doc.xceedsoft.com/products/XceedGrid/Building_an_unbound_hierarchical_master_detail_grid.html
More examples : D:\Xceed Component Samples\Xceed Grid for .NET 3.8\Samples\CSharp\MasterDetailModes
Technical Support and software developer
Xceed Software Inc.
Knowledge Base : http://xceed.com/kb/
Update Center : http://xceed.com/updates/
Documentation Center : http://xceed.com/doc/
For everything else, there is Google