Question

How to create a set of objects in C#

Answer 1

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        HashSet<string> fruits = new HashSet<string>();
        
        fruits.Add("Apple");
        fruits.Add("Banana");
        fruits.Add("Strawberry");

        foreach (var fruit in fruits) {
            Console.WriteLine(fruit);
        }
    }
}


/*
run:

Apple
Banana
Strawberry

*/

 

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Answer 2

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        HashSet<string> fruits = new HashSet<string> { "Apple", "Banana", "Strawberry" };

        foreach (var fruit in fruits) {
            Console.WriteLine(fruit);
        }
    }
}


/*
run:

Apple
Banana
Strawberry

*/

 

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Answer 3

using System;
using System.Collections.Generic;

public class FruitClass
{
    public string Name { get; set; }

    public FruitClass(string name) {
        Name = name;
    }

    public override string ToString() {
        return Name;
    }
}

public class Program
{
    public static void Main()
    {
        HashSet<FruitClass> fruits = new HashSet<FruitClass> {
            new FruitClass("Apple"),
            new FruitClass("Banana"),
            new FruitClass("Strawberry")
        };

        foreach (var fruit in fruits) {
            Console.WriteLine(fruit);
        }
    }
}


/*
run:

Apple
Banana
Strawberry

*/

 

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