using System; 

using System.Collections.Generic; 

public class IDCS { 

    public static void Main() 

    { 

        Dictionary<string, string> programming =  

          new Dictionary<string, string>(); 

        programming.Add("1", "C"); 

        programming.Add("2", "C++"); 

        programming.Add("3", "C#"); 

        programming.Add("4", "JAVA"); 

        programming.Add("5", "Kalimantan"); 

        programming.Add("6", "Kotlin"); 

        Console.WriteLine("Jumlah DATA pada Dictionary : " + programming.Count); 

        Console.WriteLine();

        foreach (string s in programming.Keys)

                Console.WriteLine(s + ": " + programming[s]);  

​

        programming.Remove("5"); 

        Console.WriteLine();

        Console.WriteLine("Jumlah DATA pada Dictionary : " + programming.Count);

        Console.WriteLine();

        foreach (string s in programming.Keys)

                Console.WriteLine(s + ": " + programming[s]);  

} 

}