What is the Keys property of SortedList class in C#?

Get the keys in the SortedList using the keys property of SortedList class in C#. We have first set the SortedList property with elements.

SortedList sl = new SortedList(); sl.Add("ST0", "One"); sl.Add("ST1", "Two"); sl.Add("ST2", "Three"); sl.Add("ST3", "Four"); sl.Add("ST4", "Five"); sl.Add("ST5", "Six"); sl.Add("ST6", "Seven");

Now use the keys property to get the keys.

ICollection key = sl.Keys;

The following is the complete code to implement keys property of SortedList class.

Example

 Live Demo

using System; using System.Collections; namespace Demo {    class Program {       static void Main(string[] args) {          SortedList sl = new SortedList();          sl.Add("ST0", "One");          sl.Add("ST1", "Two");          sl.Add("ST2", "Three");          sl.Add("ST3", "Four");          sl.Add("ST4", "Five");          sl.Add("ST5", "Six");          sl.Add("ST6", "Seven");          ICollection key = sl.Keys;          foreach (string k in key) {             Console.WriteLine(k);          }       }    } }

Output

ST0 ST1 ST2 ST3 ST4 ST5 ST6