View source for Microsoft LINQ

* [http://visualstudiomagazine.com/blogs/tool-tracker/2011/11/seeing-the-sql.aspx Seeing the SQL Generated by LINQ to Entity Queries (Visual Studio Magazine)]
* [[Media:Microsoft Press - Introducing Microsoft LINQ.zip]]
* [http://www.hookedonlinq.com/LINQtoXML5MinuteOverview.ashx LINQ to XML - 5 Minute Overview]
* [http://msdn.microsoft.com/en-us/vcsharp/aa336746.aspx 101 Linq samples (MSDN)]
* Linq extension method to flatten a hierarchy:

 using System.Collections.Generic;
 using System.Linq;
 using Model.Entity;
 namespace Util
 {
    public static class RatesWorksheetSectionExtensions
    {
        public static IEnumerable<RatesWorksheetSection> Flatten(this IEnumerable<RatesWorksheetSection> source)
        {
            return source.Concat(source.SelectMany(p => p.Children.Flatten()));
        }
    }
 }