C#中的Linq Intersect與Except辦法應用實例

C#中的Linq Intersect與Except辦法應用實例。本站提示廣大學習愛好者：（C#中的Linq Intersect與Except辦法應用實例）文章只能為提供參考，不一定能成為您想要的結果。以下是C#中的Linq Intersect與Except辦法應用實例正文

實例描寫

現有某班先生的兩份成就，兩份成就中存在一些紛歧致的記載。需借助於編程辦法找出這些紛歧致的記載。

實例代碼

using System;
using System.Collections.Generic;
using System.Linq;
namespace IntersectAndExceptExp
{
  class Program
  {
    static void Main(string[] args)
    {
      List<Student> studentList1 = newList<Student>() {
        new Student(){StudentId=1,Score=64},
        new Student(){StudentId=2,Score=85},
        new Student(){StudentId=3,Score=78},
        new Student(){StudentId=4,Score=94},
        new Student(){StudentId=5,Score=90}
      };
      List<Student> studentList2 = newList<Student>() {
        new Student(){StudentId=1,Score=64},
        new Student(){StudentId=2,Score=80},
        new Student(){StudentId=3,Score=78},
        new Student(){StudentId=4,Score=94},
        new Student(){StudentId=5,Score=95}
      };
      var both = studentList1.Intersect(studentList2,new StudentComparer());
      var diff1 =studentList1.Except(both, new StudentComparer());
      var diff2 =studentList2.Except(both, new StudentComparer());
      Console.WriteLine("-------------上面是兩份成就中分歧的記載--------------");
      Console.WriteLine("-------------第一份先生成就--------------");
      foreach (var s in diff1)
      {
        Console.WriteLine("StudentId:"+s.StudentId+";Score:"+s.Score);
      }
      Console.WriteLine("-------------第一份先生成就--------------");
      foreach (var s in diff2)
      {
        Console.WriteLine("StudentId:"+ s.StudentId + ";Score:" + s.Score);
      }
    }
  }
  public class Student
  {
    public int StudentId { get; set; }
    public int Score { get; set; }
  }
  public class StudentComparer : IEqualityComparer<Student>
  {
    public bool Equals(Student x, Studenty)
    {
      if (Object.ReferenceEquals(x, y)) returntrue;
      return x != null && y != null&& x.StudentId == y.StudentId && x.Score == y.Score;
    }
    public int GetHashCode(Student obj)
    {
      int hashStudentId =obj.StudentId.GetHashCode();
      int hashScore =obj.Score.GetHashCode();
      return hashStudentId ^ hashScore;
    }
  }
}

代碼解釋

先應用Intersect辦法生成兩份記載的交集，該辦法會應用傳入的比擬器對值停止比擬決議記載能否雷同。基於前步生成的交集，再應用Except辦法找出兩份記載中紛歧致的記載，該辦法異樣應用傳入的比擬器對值停止比擬決議記載能否雷同。

履行成果