illustrates the use of a Hashtable : Hashtable « Collections Data Structure « C# / C Sharp

1. C# / C Sharp
2. Collections Data Structure
3. Hashtable

illustrates the use of a Hashtable

  
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example11_6.cs illustrates the use of a Hashtable
*/

using System;
using System.Collections;

public class Example11_6
{

  public static void Main()
  {

    // create a Hashtable object
    Hashtable myHashtable = new Hashtable();

    // add elements containing US state abbreviations and state
    // names to myHashtable using the Add() method
    myHashtable.Add("AL", "Alabama");
    myHashtable.Add("CA", "California");
    myHashtable.Add("FL", "Florida");
    myHashtable.Add("NY", "New York");
    myHashtable.Add("WY", "Wyoming");

    // display the Count property
    Console.WriteLine("myHashtable.Count = " + myHashtable.Count);

    // lookup the state name for "CA"
    string myState = (string) myHashtable["CA"];
    Console.WriteLine("myState = " + myState);

    // display the keys for myHashtable using the Keys property
    foreach (string myKey in myHashtable.Keys)
    {
      Console.WriteLine("myKey = " + myKey);
    }

    // display the values for myHashtable using the Values property
    foreach(string myValue in myHashtable.Values)
    {
      Console.WriteLine("myValue = " + myValue);
    }

  }

}


           
         
    
  

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10.	Create Hashtable by copying the elements from the specified dictionary to the new Hashtable object.
11.	Hashtable.Clear Method removes all elements from the Hashtable.
12.	Hashtable.Contains Method determines whether the Hashtable contains a specific key.
13.	Hashtable.CopyTo Method copies the Hashtable elements to a one-dimensional Array instance at the specified index.
14.	Hashtable.GetEnumerator Method returns an IDictionaryEnumerator that iterates through the Hashtable.
15.	Hashtable.IsSynchronized Property gets a value indicating whether access to the Hashtable is synchronized (thread safe).
16.	Hashtable.Remove Method removes the element with the specified key from the Hashtable.
17.	IComparer Interface exposes a method that compares two objects.