SQL_Table_Image
The image represent the data Im getting from SQL 2008 via web service to a WPF application to be represented in a Tree view with three levels(two drop down menus).For this purpose i would have to group this data with Bill_id (the first level in tree view), then product_id (the second level in tree view) and then option_id (the third level). At this time i currently don't have any idea if it is possible to group data like this with linq or whatever. or even if this is the right approach or not. I'm not that good with hierarchical-data. Any kind of advice or sample code would be appreciated The image r