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Get an ICollection containing the keys in ListDictionary in C#
To get an ICollection containing the keys in ListDictionary, the code is as follows −
Example
using System; using System.Collections; using System.Collections.Specialized; public class Demo { public static void Main(){ ListDictionary listDict = new ListDictionary(); listDict.Add("1", "Laptop"); listDict.Add("2", "Tablet"); listDict.Add("3", "Desktop"); listDict.Add("4", "Speaker"); listDict.Add("5", "Earphone"); listDict.Add("6", "Headphone"); ICollection col = listDict.Keys; foreach(String s in col){ Console.WriteLine(s); } } }
Output
This will produce the following output −
1 2 3 4 5 6
Example
Let us see another example −
using System; using System.Collections; using System.Collections.Specialized; public class Demo { public static void Main(){ ListDictionary listDict = new ListDictionary(); listDict.Add("A", "Tom"); listDict.Add("B", "John"); listDict.Add("C", "Kevin"); listDict.Add("D", "Tim"); ICollection col = listDict.Keys; foreach(String s in col){ Console.WriteLine(s); } } }
Output
This will produce the following output −
A B C D
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