[Edit]

C# / .NET - add items to HashSet

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Created by:

Roseanne-Read

1365

In this article, we would like to show you how to add items to HashSet in C#.

Quick solution:

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HashSet<string> myHashset = new HashSet<string>();
​
myHashset.Add("A");

Practical example

Edit

In this example, we add three elements to myHashset using Add() method.

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using System;
using System.Collections.Generic;
​
public class Program
{
    public static void Main()
    {
        HashSet<string> myHashset = new HashSet<string>();
​
        myHashset.Add("A");
        myHashset.Add("B");
        myHashset.Add("C");
​
        foreach (string item in myHashset)
            Console.WriteLine(item);
    }
}

Output:

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A
B
C

2. Add items on creation

Edit

In this example, we present how to add items while creating HashSet.

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using System;
using System.Collections.Generic;
​
public class Program
{
    public static void Main()
    {
        HashSet<string> myHashset = new HashSet<string> { "A", "B", "C" };
​
        foreach (string item in myHashset)
            Console.WriteLine(item);
    }
}