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Create HashSet from another collection in C#
To create HashSet from another Collection, the code is as follows−
Example
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
HashSet<int> set1 = new HashSet<int>();
set1.Add(100);
set1.Add(200);
set1.Add(300);
Console.WriteLine("HashSet created from another collection...");
foreach(int i in set1){
Console.WriteLine(i);
}
HashSet<int> set2 = new HashSet<int>(set1);
Console.WriteLine("HashSet created from another collection...");
foreach(int i in set2){
Console.WriteLine(i);
}
}
}Output
This will produce the following output −
HashSet created from another collection... 100 200 300 HashSet created from another collection... 100 200 300
Example
Let us now see another example −
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
HashSet<string> set1 = new HashSet<string>();
set1.Add("Jacob");
set1.Add("Tom");
set1.Add("Harry");
set1.Add("Harry");
set1.Add("Tom");
set1.Add("Harry");
Console.WriteLine("HashSet created from another collection...");
foreach(string i in set1){
Console.WriteLine(i);
}
HashSet<string> set2 = new HashSet<string>(set1);
Console.WriteLine("HashSet created from another collection...");
foreach(string i in set2){
Console.WriteLine(i);
}
}
}Output
This will produce the following output −
HashSet created from another collection... Jacob Tom Harry HashSet created from another collection... Jacob Tom Harry
Updated on: 05-Dec-2019
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