C# | Check if a SortedSet is a superset of the specified collection

Last Updated : 11 Jul, 2025

SortedSet class represents the collection of objects in sorted order. This class comes under the System.Collections.Generic namespace. SortedSet<T>.IsSupersetOf(IEnumerable<T>) method is used to check whether a SortedSet<T> object is a superset of the specified collection. Properties:

In C#, SortedSet class can be used to store, remove or view elements.
It maintains ascending order and does not store duplicate elements.
It is suggested to use SortedSet class if you have to store unique elements and maintain ascending order.

Syntax:

mySet1.IsSupersetOf(mySet2);

Here, mySet1 and mySet2 are the two objects of SortedSets. Return Value: This method returns True if the SortedSet<T> object is superset of other, otherwise returns false. Exception: This method will give ArgumentNullException if the SortedSet is null. Below are the programs to illustrate the use of SortedSet<T>.IsSupersetOf(IEnumerable<T>) method: Example 1 :

CSHARP

// C# code to Check if a SortedSet is a
// superset of the specified collection
using System;
using System.Collections.Generic;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a SortedSet of strings
        SortedSet<string> mySet1 = new SortedSet<string>();

        // Inserting elements in SortedSet
        mySet1.Add("Geeks");
        mySet1.Add("GeeksQuiz");

        // Creating a SortedSet of strings
        SortedSet<string> mySet2 = new SortedSet<string>();

        // Inserting elements in SortedSet
        mySet2.Add("DS");
        mySet2.Add("C++");
        mySet2.Add("Java");
        mySet2.Add("JavaScript");
        mySet2.Add("GeeksQuiz");
        mySet2.Add("Geeks");

        // Check if a SortedSet is a superset
        // of the specified collection
        // It should return true as SortedSet mySet2
        // is superset of SortedSet mySet1
        Console.WriteLine(mySet2.IsSupersetOf(mySet1));
    }
}

Output:

True

Example 2:

CSHARP

// C# code to Check if a SortedSet is a
// superset of the specified collection
using System;
using System.Collections.Generic;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a SortedSet of integers
        SortedSet<int> mySet1 = new SortedSet<int>();

        // Inserting elements in SortedSet
        mySet1.Add(2);
        mySet1.Add(3);
        mySet1.Add(4);
        mySet1.Add(5);

        // Creating a SortedSet of integers
        SortedSet<int> mySet2 = new SortedSet<int>();

        // Inserting elements in SortedSet
        mySet2.Add(3);
        mySet2.Add(4);
        mySet2.Add(5);
        mySet2.Add(6);

        // Check if a SortedSet is a superset
        // of the specified collection
        // It should return false as SortedSet mySet2
        // is not a superset of SortedSet mySet1
        Console.WriteLine(mySet2.IsSupersetOf(mySet1));
    }
}