📜  C#|检查两个List对象是否相等

📅  最后修改于: 2021-05-29 22:56:03             🧑  作者: Mango

从Object类继承的Equals(Object)方法用于检查指定的List 对象是否等于另一个List 对象。

句法:

public virtual bool Equals (object obj);

此处, obj是要与当前对象进行比较的对象。

返回值:如果指定对象等于当前对象,则此方法返回true ,否则返回false

下面的程序说明了上面讨论的方法的使用:

范例1:

// C# program to if a List object
// is equal to another List object
using System;
using System.Collections.Generic;
  
class Geeks {
  
    // Main Method
    public static void Main(String[] args)
    {
  
        // Creating an List of Integers
        List firstlist = new List();
  
        // Adding elements to List
        firstlist.Add(17);
        firstlist.Add(19);
        firstlist.Add(21);
        firstlist.Add(9);
        firstlist.Add(75);
        firstlist.Add(19);
        firstlist.Add(73);
  
        // Checking whether firstlist is
        // equal to itself or not
        Console.WriteLine(firstlist.Equals(firstlist));
    }
}
输出:
True

范例2:

// C# program to if a List object
// is equal to another List object
using System;
using System.Collections.Generic;
  
class Geeks {
  
    // Main Method
    public static void Main(String[] args)
    {
  
        // Creating a List of strings
        List list1 = new List();
  
        // Inserting elements in List
        list1.Add("DS");
        list1.Add("C++");
        list1.Add("Java");
        list1.Add("JavaScript");
  
        // Creating an List of Integers
        List list2 = new List();
  
        // Adding elements to List
        list2.Add(78);
        list2.Add(44);
        list2.Add(27);
        list2.Add(98);
        list2.Add(74);
  
        // Checking whether list1 is
        // equal to list2 or not
        Console.WriteLine(list1.Equals(list2));
  
        // Creating a List of integers
        List list3 = new List();
  
        // Assigning list2 to list3
        list3 = list2;
  
        // Checking whether list3 is
        // equal to list2 or not
        Console.WriteLine(list3.Equals(list2));
    }
}
输出:
False
True

注意:如果当前实例是引用类型,则Equals(Object)方法将检查引用是否相等。