How to check if a Set is Not Empty in C# - Step by Step Examples

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How to check if a Set is Not Empty in C# ?

Answer

To check if a Set is not empty in C#, you can use the Any() method of the LINQ library.

✐ Examples

1 Check if Set is Not Empty

In this example,

We declare a Set named set and initialize it with some elements.
We use the Any() method on the Set set to check if it contains any elements.
If the Set is not empty, the Any() method returns true; otherwise, it returns false.
We print the result to the standard output to indicate whether the Set is not empty or not.

C# Program

using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> set = new HashSet<int>(); // Or initialize with elements for a non-empty Set
        bool isNotEmpty = set.Any();
        if (isNotEmpty)
        {
            Console.WriteLine("The Set is not empty");
        }
        else
        {
            Console.WriteLine("The Set is empty");
        }
    }
}

Output

The Set is empty

2 Check if Empty Set is Not Empty

In this example,

We declare an empty Set named emptySet.
We use the Any() method on the Set emptySet to check if it contains any elements.
Since the Set is empty, the Any() method returns false.
We print the result to the standard output to indicate that the Set is indeed empty.

C# Program

using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        HashSet<int> emptySet = new HashSet<int>();
        bool isNotEmpty = emptySet.Any();
        if (isNotEmpty)
        {
            Console.WriteLine("The Set is not empty");
        }
        else
        {
            Console.WriteLine("The Set is empty");
        }
    }
}

Output

The Set is empty

Summary

In this tutorial, we learned How to check if a Set is Not Empty in C# language with well detailed examples.

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How to check if a Set is Not Empty in C# - Step by Step Examples

How to check if a Set is Not Empty in C# ?

Answer

✐ Examples

1 Check if Set is Not Empty

C# Program

Output

2 Check if Empty Set is Not Empty

C# Program

Output

Summary

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