How to add key/value pairs in SortedList in C#?

To add key/value pairs in SortedList, the code is as follows −

Example

 Live Demo

using System; using System.Collections; public class Demo {    public static void Main(String[] args){       SortedList list = new SortedList();       list.Add("A", "Jacob");       list.Add("B", "Sam");       list.Add("C", "Tom");       list.Add("D", "John");       list.Add("E", "Tim");       list.Add("F", "Mark");       list.Add("G", "Gary");       list.Add("H", "Nathan");       list.Add("I", "Shaun");       list.Add("J", "David");       ICollection col1 = list.Values;       Console.WriteLine("Values...");       foreach(string s in col1)       Console.WriteLine(s);       ICollection col2 = list.Keys;       Console.WriteLine("
Keys...");       foreach(string s in col2)       Console.WriteLine(s);    } }

Out

This will produce the following output −

Values... Jacob Sam Tom John Tim Mark Gary Nathan Shaun David Keys... A B C D E F G H I J

Example

Let us now see another example −

 Live Demo

using System; using System.Collections; public class Demo {    public static void Main(String[] args){       SortedList sortedList = new SortedList();       sortedList.Add("A", "1");       sortedList.Add("B", "2");       sortedList.Add("C", "3");       sortedList.Add("D", "4");       sortedList.Add("E", "5");       sortedList.Add("F", "6");       sortedList.Add("G", "7");       sortedList.Add("H", "8");       sortedList.Add("I", "9");       sortedList.Add("J", "10");       Console.WriteLine("SortedList elements...");       foreach(DictionaryEntry d in sortedList){          Console.WriteLine("Key = "+d.Key + ", Value = " + d.Value);       }       Console.WriteLine("Count of SortedList key-value pairs = "+sortedList.Count);       sortedList.RemoveAt(3);       Console.WriteLine("
Enumerator to iterate through the SortedList...");       IDictionaryEnumerator demoEnum = sortedList.GetEnumerator();       while (demoEnum.MoveNext())          Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);       Console.WriteLine("Count of SortedList key-value pairs (Updated) = "+sortedList.Count);    } }

Output

This will produce the following output −

SortedList elements... Key = A, Value = 1 Key = B, Value = 2 Key = C, Value = 3 Key = D, Value = 4 Key = E, Value = 5 Key = F, Value = 6 Key = G, Value = 7 Key = H, Value = 8 Key = I, Value = 9 Key = J, Value = 10 Count of SortedList key-value pairs = 10 Enumerator to iterate through the SortedList... Key = A, Value = 1 Key = B, Value = 2 Key = C, Value = 3 Key = E, Value = 5 Key = F, Value = 6 Key = G, Value = 7 Key = H, Value = 8 Key = I, Value = 9 Key = J, Value = 10 Count of SortedList key-value pairs (Updated) = 9