I've made two Master/Detail demos using RadGrid for ASP.NET AJAX, LINQ to SQL and WebService client-side data-binding.
The first example is a single grid with two hierarchical levels (Customers -> Orders) with enabled paging, sorting & filtering for the entire hierarchy:
and the second demo is a classic Master/Detail with two grids:
Vladimir Enchev is Director of Engineering, Native Mobile UI & Frameworks
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