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  1. using System; using System.Linq; using System.Collections.Generic;
  2.  
  3. public class Test
  4. {
  5. 	public static void Main()
  6. 	{
  7. 		var Products = new List<Product>
  8.             {
  9.                 new Product { Name = "XXXVVVXXXX", Category = "Category1", Price = 10 },
  10.                 new Product { Name = "YYYY",       Category = "Category2", Price = 5 },
  11.                 new Product { Name = "XXYZXXXXXX", Category = "Category1", Price = 15 },
  12.                 new Product { Name = "YYVV",       Category = "Category2", Price = 10 },
  13.                 new Product { Name = "TTTT",       Category = "Category2", Price = 11 }
  14.             };
  15.  
  16.         var query =
  17.         	from p in Products
  18.         	group p by p.Category into g
  19.         	select new { Category = g.Key, Total = g.Sum(p => p.Price), Values = g };
  20.  
  21.     	foreach (var g in query) {
  22.     		foreach (Product p in g.Values) {
  23.     			Console.WriteLine("{0}\t|\t{1}\t|\t{2}", p.Name, p.Category, p.Price);
  24.     		}
  25.     		Console.WriteLine("Total {0}:\t{1}", g.Category, g.Total);
  26.     	}
  27.  
  28. 	}
  29. }
  30.  
  31. class Product
  32. {
  33.     public string Name { get; set; }
  34.     public string Category { get; set; }
  35.     public int Price { get; set; }
  36. }
  37.  
Success #stdin #stdout 0.04s 34072KB
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stdin
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stdout
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XXXVVVXXXX	|	Category1	|	10
XXYZXXXXXX	|	Category1	|	15
Total Category1:	25
YYYY	|	Category2	|	5
YYVV	|	Category2	|	10
TTTT	|	Category2	|	11
Total Category2:	26
https://ideone.com/ckhFNq
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
secret

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