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Remove an item from a Hashtable in C#
The following is our Hashtable −
Hashtable h = new Hashtable(); h.Add(1, "Jack"); h.Add(2, "Henry"); h.Add(3, "Ben"); h.Add(4, "Chris");
To remove an item, use the Remove() method. Here, we are removing the 3rd element.
h.Remove(3);
Let us see the complete example.
Example
using System; using System.Collections; public class Demo { public static void Main() { Hashtable h = new Hashtable(); h.Add(1, "Jack"); h.Add(2, "Henry"); h.Add(3, "Ben"); h.Add(4, "Chris"); Console.WriteLine("Initial list:"); foreach (var key in h.Keys ) { Console.WriteLine("Key = {0}, Value = {1}",key , h[key]); } // removing an item h.Remove(3); Console.WriteLine("New list after removing an item: "); foreach (var key in h.Keys ) { Console.WriteLine("Key = {0}, Value = {1}",key , h[key]); } } }
Output
Initial list: Key = 4, Value = Chris Key = 3, Value = Ben Key = 2, Value = Henry Key = 1, Value = Jack New list after removing an item: Key = 4, Value = Chris Key = 2, Value = Henry Key = 1, Value = Jack
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