Getting the index of the specified key in a SortedList object in C#

To get index of the specified key in a SortedList object, 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("One", "Finance");       list.Add("Two", "Marketing");       list.Add("Three", "Sales");       list.Add("Four", "Purchase");       list.Add("Five", "Operations");       list.Add("Six", "IT");       Console.WriteLine("SortedList elements...");       foreach(DictionaryEntry d in list) {          Console.WriteLine(d.Key + " " + d.Value);       }       Console.WriteLine("
Index at key One = "+list.IndexOfKey("One"));    } }

Output

This will produce the following output −

SortedList elements... Five Operations Four Purchase One Finance Six IT Three Sales Two Marketing Index at key One = 2

Example

Let us see another example −

 Live Demo

using System; using System.Collections; public class Demo {    public static void Main(String[] args) {       SortedList list1 = new SortedList();       list1.Add("One", 1);       list1.Add("Two", 2);       list1.Add("Three", 3);       list1.Add("Four", 4);       list1.Add("Five", 5);       list1.Add("Six", 6);       list1.Add("Seven", 7);       list1.Add("Eight", 8);       list1.Add("Nine", 9);       list1.Add("Ten", 10);       Console.WriteLine("SortedList1 elements...");       foreach(DictionaryEntry d in list1) {          Console.WriteLine(d.Key + " " + d.Value);       }       Console.Write("Index at key Five = "+list1.IndexOfKey("Five"));       SortedList list2 = new SortedList();       list2.Add("A", "Accessories");       list2.Add("B", "Books");       list2.Add("C", "Smart Wearable Tech");       list2.Add("D", "Home Appliances");       Console.WriteLine("

SortedList2 elements...");       foreach(DictionaryEntry d in list2) {          Console.WriteLine(d.Key + " " + d.Value);       }       Console.Write("Index at key B = "+list2.IndexOfKey("B"));    } }

Output

This will produce the following output −

SortedList1 elements... Eight 8 Five 5 Four 4 Nine 9 One 1 Seven 7 Six 6 Ten 10 Three 3 Two 2 Index at key Five = 1 SortedList2 elements... A Accessories B Books C Smart Wearable Tech D Home Appliances Index at key B = 1