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Clear a Hashtable in C#
Clear a Hashtable, using the Clear() method in C#.
The following is our Hashtable −
Hashtable h = new Hashtable(); h.Add(1, "Amit"); h.Add(2, "Sachin"); h.Add(3, "Rahul");
Use the clear method.
h.Clear();
If you will now try to display the Hashtable, nothing would get display since the Hashtable is empty.
Example
using System;
using System.Collections;
public class Demo {
public static void Main() {
Hashtable h = new Hashtable();
h.Add(1, "Amit");
h.Add(2, "Sachin");
h.Add(3, "Rahul");
Console.WriteLine("Keys and Values list:");
foreach (var key in h.Keys ) {
Console.WriteLine("Key = {0}, Value = {1}",key , h[key]);
}
// clear all key value pairs
Console.WriteLine("The Hashtable key and Value Pairs are empty now...");
h.Clear();
foreach (var key in h.Keys ) {
Console.WriteLine("Key = {0}, Value = {1}",key , h[key]);
}
}
}Output
Keys and Values list: Key = 3, Value = Rahul Key = 2, Value = Sachin Key = 1, Value = Amit The Hashtable key and Value Pairs are empty now...
Updated on: 23-Jun-2020
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