C# | Check if two ArrayList objects are equal Last Updated : 18 Feb, 2019 Comments Improve Suggest changes Like Article Like Report Equals(Object) Method which is inherited from the Object class is used to check whether the specified ArrayList object is equal to another ArrayList object or not. Syntax: public virtual bool Equals (object obj); Here, obj is the object which is to be compared with the current object. Return Value: This method return true if the specified object is equal to the current object otherwise, false. Below programs illustrate the use of above-discussed method: Example 1: CSharp // C# program to if a ArrayList // is equal to itself or not using System; using System.Collections; class Geeks { // Main Method public static void Main(String[] args) { // Creating a ArrayList ArrayList arrlist = new ArrayList(); // Adding elements to ArrayList arrlist.Add(1); arrlist.Add(2); arrlist.Add(3); arrlist.Add(4); arrlist.Add(5); // Checking whether arrlistis // equal to itself or not Console.WriteLine(arrlist.Equals(arrlist)); } } Output: True Example 2: The equals method only check if both ArrayList references refer to same object or not. It returns false if two objects are different, even if they have same values. CSharp // C# program to if a ArrayList // is equal to another ArrayList using System; using System.Collections; class Geeks { // Main Method public static void Main(String[] args) { // Creating a ArrayList ArrayList arrlist = new ArrayList(); // Adding elements to ArrayList arrlist.Add("This"); arrlist.Add("is"); arrlist.Add("C#"); arrlist.Add("ArrayList"); arrlist.Add("Tutorial."); // Creating an ArrayList ArrayList arrlist2 = new ArrayList(); // Adding elements to ArrayList arrlist2.Add("This"); arrlist2.Add("is"); arrlist2.Add("C#"); arrlist2.Add("ArrayList"); arrlist2.Add("Tutorial."); // Checking whether arrlist is // equal to arrlist2 or not Console.WriteLine(arrlist.Equals(arrlist2)); // Creating a ArrayList ArrayList arrlist3 = new ArrayList(); // Assigning arrlist2 to arrlist3 arrlist3 = arrlist2; // Checking whether arrlist3 is // equal to arrlist2 or not Console.WriteLine(arrlist3.Equals(arrlist2)); } } Output: False True Note: If the current instance is a reference type, the Equals(Object) method checks for reference equality. Comment More infoAdvertise with us Next Article C# | Check if two ArrayList objects are equal K Kirti_Mangal Follow Improve Article Tags : C# CSharp-method CSharp-Collections-Namespace CSharp-Collections-ArrayList Similar Reads C# | Check if two BitArray objects are equal Equals(Object) Method which is inherited from the Object class is used to check if a specified BitArray object is equal to another BitArray object or not. Syntax: public virtual bool Equals (object obj); Here, obj is the object which is to be compared with the current object. Return Value: This meth 2 min read C# | Check if two List objects are equal Equals(Object) Method which is inherited from the Object class is used to check if a specified List<T> object is equal to another List<T> object or not. Syntax: public virtual bool Equals (object obj); Here, obj is the object which is to be compared with the current object. 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