从Object类继承的Equals(Object)方法用于检查指定的Dictionary对象是否等于另一个Dictionary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# code to check if two
// Dictionary are equal or not
using System;
using System.Collections.Generic;
class GFG {
// Driver code
public static void Main()
{
// Creating a Dictionary named myDict
Dictionary myDict =
new Dictionary();
// Adding key/value pairs in myDict
myDict.Add("Australia", "Canberra");
myDict.Add("Belgium", "Brussels");
myDict.Add("Netherlands", "Amsterdam");
myDict.Add("China", "Beijing");
myDict.Add("Russia", "Moscow");
myDict.Add("India", "New Delhi");
// Checking whether myDict is
// equal to itself or not
Console.WriteLine(myDict.Equals(myDict));
}
}
输出:
True
范例2:
// C# code to check if two
// Dictionary are equal or not
using System;
using System.Collections.Generic;
class GFG {
// Driver code
public static void Main()
{
// Creating a Dictionary named myDict
Dictionary myDict1 =
new Dictionary();
// Adding key/value pairs in myDict
myDict1.Add("I", "first");
myDict1.Add("II", "second");
myDict1.Add("III", "third");
myDict1.Add("IV", "fourth");
myDict1.Add("V", "fifth");
// Creating a Dictionary named myDict2
Dictionary myDict2 =
new Dictionary();
myDict2.Add("1st", "C");
myDict2.Add("2nd", "C++");
myDict2.Add("3rd", "Java");
myDict2.Add("4th", "C#");
myDict2.Add("5th", "HTML");
myDict2.Add("6th", "PHP");
// Checking whether myDict1 is
// equal to myDict2 or not
Console.WriteLine(myDict1.Equals(myDict2));
// Creating a new Dictionary
Dictionary myDict3 =
new Dictionary();
// Assigning myDict2 to myDict3
myDict3 = myDict2;
// Checking whether myDict3 is
// equal to myDict2 or not
Console.WriteLine(myDict3.Equals(myDict2));
}
}
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。