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C# - SortedList.RemoveAt() Method with Example

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

SortedList.RemoveAt() Method

The SortedList.RemoveAt() is used to remove an element from SortedList on the basis of the index, the index starts from 0 to N-1. Here, N denotes a total number of elements in SortedList. The list will sort again after removing elements accordingly.

Syntax

void SortedList.RemoveAt(int index);

Parameter(s)

• index: The zero-based index of the element to remove.

Return Value

This method does not return any value.

Exception(s)

• System.ArgumentOutOfRangeException
• System.NotSupportedException

C# Example of SortedList.RemoveAt() Method

The source code to remove an element at the specified index from 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();

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


        Console.WriteLine("List before RemoveAt:");
        foreach (DictionaryEntry val in list)
        {
            Console.WriteLine("\t{0} : {1}",
                    val.Key, val.Value);
        }
        Console.WriteLine();

        list.RemoveAt(1);

        Console.WriteLine("List after RemoveAt:");
        foreach (DictionaryEntry val in list)
        {
            Console.WriteLine("\t{0} : {1}",
                    val.Key, val.Value);
        }
        Console.WriteLine();
    }
}

Output

List before RemoveAt:
        1 : India
        2 : Australia
        3 : Africa
        4 : Canada
        5 : America

List after RemoveAt:
        1 : India
        3 : Africa
        4 : Canada
        5 : America

Press any key to continue . . .

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