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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5.  
  6. public class Test
  7. {
  8.  
  9.     public static void Main()
  10.     {
  11.  
  12.         List<Item1> myList = Test.getmyList();
  13.         List<Item2> externList = Test.getExternList();
  14.  
  15.         Test.print(myList, "Мой список:");
  16.         Test.print(externList, "Внешний список до сортировки:");
  17.  
  18.         externList = externList.OrderBy(x => myList.FindIndex(y => x.Name == y.Name)).ToList();
  19.  
  20.         Test.print(externList, "Внешний список после сортировки:");
  21.  
  22.     }
  23.  
  24.  
  25.     private static List<Item1> getmyList()
  26.     {
  27.         Item1[] items = new Item1[] {
  28.                 new Item1 {id = 1, Name = "P1"},
  29.                 new Item1 {id = 2, Name = "P2"},
  30.                 new Item1 {id = 3, Name = "P3"},
  31.                 new Item1 {id = 4, Name = "P4"},
  32.                 new Item1 {id = 5, Name = "P5"}
  33.             };
  34.         return items.ToList();
  35.     }
  36.  
  37.     private static List<Item2> getExternList()
  38.     {
  39.         Item2[] items = new Item2[] {
  40.                 new Item2 { Name = "P5"},
  41.                 new Item2 { Name = "P4"},
  42.                 new Item2 { Name = "P3"},
  43.                 new Item2 { Name = "P2"},
  44.                 new Item2 { Name = "P1"}
  45.             };
  46.         return items.ToList();
  47.     }
  48.  
  49.     private static void print<T>(IEnumerable<T> list, string message = "")
  50.     {
  51.         Console.WriteLine(message);
  52.         foreach (var item in list)
  53.         {
  54.             Console.WriteLine(item.ToString());
  55.         }
  56.     }
  57.  
  58. }
  59.  
  60. class Item1
  61. {
  62.     public int id { get; set; }
  63.     public string Name { get; set; }
  64.  
  65.     public override string ToString()
  66.     {
  67.         return Name;
  68.     }
  69. }
  70.  
  71. class Item2
  72. {
  73.     public string Name { get; set; }
  74.     public override string ToString()
  75.     {
  76.         return Name;
  77.     }
  78. }
  79.  
Success #stdin #stdout 0.01s 29928KB
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stdin
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Standard input is empty
stdout
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Мой список:
P1
P2
P3
P4
P5
Внешний список до сортировки:
P5
P4
P3
P2
P1
Внешний список после сортировки:
P1
P2
P3
P4
P5
https://ideone.com/QqnCkK
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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