HOW TO USE HASHTABLE IN C# .NET

Ankit Singh

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Posted by  Ankit Singh
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I want to use Hashtable  in c# .net please help me.


  1. aditya kumar Patel

    Post:254

    Points:1810
    Re: how to use Hashtable in c# .net

    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");
                }
                else
                {
                    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]);
                }

                Console.ReadKey();
            }
        }
    }

     

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