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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public class MyData
  6. {
  7. 	public int Id { get; set; }
  8. 	public string Name { get; set; }
  9. 	public int Floor { get; set; }
  10. }
  11.  
  12. public class MyGroupedData
  13. {
  14. 	public string Name { get; set; }
  15. 	public IEnumerable<int> Floors { get; set; }
  16. }
  17.  
  18. public class Test
  19. {
  20. 	public static void Main()
  21. 	{
  22. 		MyData[] data = { 
  23. 			new MyData() { Id = 1, Name = "Store1", Floor = 1 }, 
  24. 			new MyData() { Id = 2, Name = "Store2", Floor = 1 }, 
  25. 			new MyData() { Id = 3, Name = "Store2", Floor = 2 }, 
  26. 			new MyData() { Id = 4, Name = "Store2", Floor = 3 }, 
  27. 			new MyData() { Id = 5, Name = "Store3", Floor = 2 },
  28. 		};
  29. 		Console.WriteLine("1");
  30. 		var groupedData = from x in data group x by x.Name into grp 
  31. 			select new MyGroupedData() { Name = grp.Key, Floors = grp.Select(y => y.Floor) };
  32. 		Console.WriteLine("2");
  33. 		foreach(var g in groupedData)
  34. 			Console.WriteLine("{0} -> {1}", g.Name, string.Join(", ", g.Floors.Select(x => x.ToString()).ToArray()));
  35. 	}
  36. }
Success #stdin #stdout 0.05s 34800KB
comments (?)
stdin
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Standard input is empty
stdout
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1
2
Store1 -> 1
Store2 -> 1, 2, 3
Store3 -> 2
https://ideone.com/9OPlZt
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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