C# Collections Part 3: Sortedlist

Sortedlist:

The SortedList class represents a collection of key-and-value pairs that are sorted by the keys and are accessible by key and by index.

A sorted list is a combination of an array and a hash table. It contains a list of items that can be accessed using a key or an index. If you access items using an index, it is an ArrayList, and if you access items using a key, it is a Hashtable. The collection of items is always sorted by the key value.

Code:

1. using System;  
2. using System.Collections.Generic;  
3. using System.Linq;  
4. using System.Text;  
5. using System.Threading.Tasks;  
6. using System.Collections;  
7.   
8. namespace sortedList  
9. {  
10.     class Program  
11.     {  
12.         static void Main(string[] args)  
13.         {  
14.             SortedList sl = new SortedList();  
15.   
16.             sl.Add(1,"Shimul Hossain");  
17.             sl.Add(3,"Sujan Hasan");  
18.             sl.Add(2,"Shakil Sorker");  
19.             print(sl);  
20.             sl.Remove(2);  
21.             print(sl);  
22.             Console.ReadKey();  
23.         }  
24.   
25.         public static void print(SortedList slist)  
26.         {  
27.             foreach (var i in slist.Keys)  
28.             {  
29.                 Console.WriteLine(i+" : "+slist[i]);  
30.             }  
31.         }  
32.     }  
33. }