Hierarchy Datagrid Display in Wpf

hi am new to wpf can any body help me how to display hierarchy /grouping in wpf datagrid using backend as sqlserver 2005 ,language c#.

thanks in advance开发者_如何学Go....

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I've used infragistics xamDataGrid Express (which is free to use) and I believe it supports hierarchical data display. You can give that a try:

http://www.infragistics.com/dotnet/netadvantage/wpf.aspx#Downloads