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C# - SortedList.GetKey() Method with Example

In this tutorial, we will learn about the C# SortedList.GetKey() method with its definition, usage, syntax, and example. By Nidhi Last updated : March 31, 2023

SortedList.GetKey() Method

The SortedList.GetKey() is used to access keys from SortedList on the basis of the index, the index starts from 0 to N-1. Here, N denotes a total number of elements or keys in SortedList.

Syntax

object SortedList.GetKey(int index);

Parameter(s)

• index: The zero-based index of the key to get.

Return Value

It returns the key at the specified index of the SortedList.

Exception(s)

• System.ArgumentOutOfRangeException

C# Example of SortedList.GetKey() Method

The source code to get the key at the specified index of a SortedList 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();

    int key;

    //Add elements to SortedList 
    list.Add(1, "India");
    list.Add(5, "America");
    list.Add(2, "Austrelia");
    list.Add(3, "Africa");
    list.Add(4, "Canada");

    Console.WriteLine("keys by index:");
    for (int index = 0; index <= 4; index++) {
      key = Convert.ToInt32(list.GetKey(index));
      Console.WriteLine(key);
    }
    Console.WriteLine();

  }
}

Output

keys by index:
1
2
3
4
5
Press any key to continue . . .

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