Test for http://stackoverflow.com/a/14299691/201648 in Linqpad

gistfile1.txt

  //http://arbel.net/2008/08/18/writing-methods-and-classes-in-linqpad/
	//Choose "C# Statement(s)" in the Type drop-down.
	//Write the code that LINQPad should execute.
	//Put a closing curly-bracket ("}") at the end.
	//Write as many classes and methods as you like.
	//On the last class/method, omit closing curly-bracket.
	
	List<KeyValuePair<int, int>> housePersonPairs = new List<KeyValuePair<int, int>>();
	housePersonPairs.Add(new KeyValuePair<int, int>(1, 11));
	housePersonPairs.Add(new KeyValuePair<int, int>(1, 12));
	housePersonPairs.Add(new KeyValuePair<int, int>(1, 13));
	housePersonPairs.Add(new KeyValuePair<int, int>(2, 232));
	housePersonPairs.Add(new KeyValuePair<int, int>(2, 5533));
	housePersonPairs.Add(new KeyValuePair<int, int>(2, 40));
	
	List<Person> persons = new List<Person>();
	persons.Add(new Person() { ID = 11, Name = "John" });
	persons.Add(new Person() { ID = 12, Name = "Jane" });
	persons.Add(new Person() { ID = 13, Name = "Zoe" });
	persons.Add(new Person() { ID = 232, Name = "Name1" });
	persons.Add(new Person() { ID = 5533, Name = "Name2" });
	persons.Add(new Person() { ID = 40, Name = "Name3" });

	var houseAndNames = housePersonPairs.Join(
				persons,
				hpp => hpp.Value,
				p => p.ID, 
				(hpp, p) => new { HouseID = hpp.Key, Name = p.Name });

   var groupedNames = from hn in houseAndNames
                group hn by hn.HouseID into groupOfNames
                select groupOfNames.Select(x => x.Name).ToList();

   List<House> houses = groupedNames.Select(names => new House() { people_name = names }).ToList();
   
   System.Console.WriteLine(houses);

}

public class Person {
	public int ID { get; set; }
	public String Name { get; set; }
}

class House
{
    public List<string> people_name { get; set; }
//} //This is deliberately left off so it will work as a Linqpad C# statement.