C# SortedList

C# SortedList

In C# the SortedList collection stores key-value pairs in ascending order of the key. C# can support both generic and non-generic SortedList collections. We always recommended using the generic type of collection to perform the program faster and less error-prone than the non-generic type of SortedList.

Let’s see some examples of SortedList in C#.

 
using System;
using System.Collections.Generic;

namespace ConsoleAppDemo
{

    class Program
    {
        static void Main(string[] args)
        {

            SortedList<int, string> langsLists = new SortedList<int, string>();
            langsLists.Add(1,"C#");
            langsLists.Add(2, "JavaScript");
            langsLists.Add(3, "Java");
            langsLists.Add(4, "Python");


            //One way to access the value of the SortedList collection
            Console.WriteLine(langsLists[1]); //Output: C#


            //Seond way to access the value of the SortedList collection using the loops
            foreach (KeyValuePair<int, string> lang in langsLists)
            {
                Console.WriteLine(lang.Key + " " + lang.Value);
            }


            //Third way to access the value of the List collection using the  for loops
            for (int i = 0; i < langsLists.Count; i++)
            {
                Console.WriteLine(langsLists.Keys[i] + " " + langsLists.Values[i]);
            }


            Console.ReadKey();
        }
    }
}

The output of both the Foreach and For loops:

1 C#
2 JavaScript
3 Java
4 Python

Alright, let's see another example with collection-initializer syntax.

 
using System;
using System.Collections.Generic;

namespace ConsoleAppDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            SortedList<int, string> langsLists = new SortedList<int, string>() {
                { 1,"C#" },
                { 2, "JavaScript" },
                { 3, "Java" },
                { 4, "Python" }
            };
            

            //One way to access the value of the List collection
            Console.WriteLine(langsLists[1]); //Output: 1:C#


            //Seond way to access the value of the SortedList collection using the loops
            foreach (KeyValuePair<int, string> lang in langsLists)
            {
                Console.WriteLine(lang.Key + " " + lang.Value);
            }


            //Third way to access the value of the SortedList collection using the  for loops
            for (int i = 0; i < langsLists.Count; i++)
            {
                Console.WriteLine(langsLists.Keys[i] + " " + langsLists.Values[i]);
            }


            Console.ReadKey();
        }
    }
}

The output of both the Foreach and For loops:

1 C#
2 JavaScript
3 Java
4 Python