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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. class Sample
  6. {
  7.     public string Value1 { get; set; }
  8.     public string Value2 { get; set; }
  9.     public override string ToString() {
  10.         return Value1 + "/" + Value2;
  11.     }
  12. }
  13.  
  14. class SampleComparer : IEqualityComparer<Sample>
  15. {
  16.     public bool Equals(Sample x, Sample y)
  17.     {
  18.         return x.Value2 == y.Value2;
  19.     }
  20.     public int GetHashCode(Sample obj)
  21.     {
  22.         return obj.Value2.GetHashCode();
  23.     }
  24. }
  25.  
  26. public class Test
  27. {
  28. 	public static void Main()
  29. 	{
  30. 		var list = new List<Sample>() { 
  31.             new Sample{ Value1 = "Apple", Value2="Red" },
  32.             new Sample{ Value1 = "Banana", Value2="Yellow" },
  33.             new Sample{ Value1 = "Lemon", Value2="Yellow" },
  34.         };
  35.  
  36.         list = list.Distinct(new SampleComparer()).ToList();
  37.  
  38.         foreach (var n in list) {
  39.             Console.WriteLine(n);
  40.         }
  41.     }
  42. }
Success #stdin #stdout 0.03s 33928KB
comments (?)
stdin 
Standard input is empty
stdout 
Apple/Red
Banana/Yellow
https://ideone.com/j2usIs
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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