C# program to check whether a SortedList object contains a specific key (Example of ContainsKey() Method)

Program:

The source code to check whether a SortedList object contains a specific key is given below. The given program is compiled and executed successfully.

using System;
using System.Collections;

class SortedListEx
{
    //Entry point of Program
    static public void Main()
    {
        //Creation of SortedList object
        SortedList list = new SortedList();

        bool ret = false;

        //Add elements to SortedList 
        list.Add(101, "India    ");
        list.Add(105, "America  ");
        list.Add(102, "Australia");
        list.Add(103, "Africa   ");
        list.Add(104, "Canada   ");

        ret = list.ContainsKey(102);
        if (ret == true)
            Console.WriteLine("102 is contained in list");
        else
            Console.WriteLine("102 is not contained in list");

        ret = list.ContainsKey(108);
        if (ret == true)
            Console.WriteLine("108 is contained in list");
        else
            Console.WriteLine("108 is not contained in list");
    }
}

Output:

102 is contained in list
108 is not contained in list
Press any key to continue . . .