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Ankit Singh

Total Post:341

Posted on    November-23-2015 10:16 PM

 .NET C#  Hashtable 

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I want to use Hashtable  in c# .net please help me.

aditya kumar Patel

Total Post:250

Posted on    November-23-2015 10:18 PM

The Hashtable class represents a collection of key-and-value pairs that are organized based on the hash code of the key. It uses the key to access the elements in the collection.

A hash table is used when you need to access elements by using key, and you can identify a useful key value. Each item in the hash table has a key/value pair. The key is used to access the items in the collection.

using System;
using System.Collections;

namespace CollectionsApplication
    class Program
        static void Main(string[] args)
            Hashtable ht = new Hashtable();

            ht.Add("001", "Aditya Kumar");
            ht.Add("002", "Manoj Singh");
            ht.Add("003", "Sohel safe");
            ht.Add("004", "V.k Patel");
            ht.Add("005", "Atul Varma");
            ht.Add("006", "M. Arif");
            ht.Add("007", "Ritesh Saikia");

            if (ht.ContainsValue("Visal Pateker"))
                Console.WriteLine("This employee name is already in the list");
                ht.Add("008", "Visal Pateker");

            // Get a collection of the keys.
            ICollection key = ht.Keys;

            foreach (string k in key)
                Console.WriteLine(k + ": " + ht[k]);



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