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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5.  
  6. public class Test
  7. {
  8. 	public static void Main()
  9. 	{
  10. 	var dtMovieListDetails = new List<MovieClass>()
  11. 	{
  12. 		new MovieClass() { Format="DVD", MovieName="Star Wars", Price=12.99M},
  13. 		new MovieClass() { Format="DVD", MovieName="Star Wars II", Price=13.99M},
  14. 		new MovieClass() { Format="Blue-Ray", MovieName="Star Wars", Price=15.99M},
  15. 		new MovieClass() { Format="Blue-Ray", MovieName="Star Wars II", Price=17.99M}
  16. 	};
  17.  
  18. 	var moviesToBuy = from movie in dtMovieListDetails
  19. 		orderby movie.Format, movie.Price
  20. 		group movie by movie.Format into grp
  21. 		select new
  22. 		{
  23. 		    Format = grp.Key,
  24. 			Movies = grp.Select (g => new { MovieName = g.MovieName, Price = g.Price })
  25. 		};
  26.  
  27. 	foreach(var movie in moviesToBuy)
  28. 	{
  29. 		Console.WriteLine(movie.Format);
  30. 		foreach(var detail in movie.Movies)
  31. 		{
  32. 		    Console.WriteLine(string.Format("    {0}     {1}", detail.MovieName, detail.Price));
  33. 		}
  34. 	}
  35. 	}
  36. }
  37.  
  38. public class MovieClass
  39. {
  40. 	public string Format { get; set; }
  41. 	public string MovieName { get; set; }
  42. 	public decimal Price { get; set; }
  43. }
Success #stdin #stdout 0.06s 37336KB
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stdin
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Standard input is empty
stdout
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Blue-Ray
    Star Wars     15.99
    Star Wars II     17.99
DVD
    Star Wars     12.99
    Star Wars II     13.99
https://ideone.com/iUj4F
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
secret

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