SamplesHashtable

 using System;

 using System.Collections;

 public class SamplesHashtable

 {

     public static void Main()

     {

         Hashtable myHT = new Hashtable();

         myHT.Add("Ton V. Bergyk", "023-010-66756");

         myHT.Add("Tom Sony", "086-010-27654");

         myHT.Add("Mr. John", "071-222-33445");

         myHT["Mr. John"] = "071-222-33445"; //加入或修改

         PrintKeysAndValues( myHT );

         PrintByKeys( myHT );

     }

     public static void PrintKeysAndValues( Hashtable myList )

     {

         IDictionaryEnumerator myEnumerator = myList.GetEnumerator();

         while ( myEnumerator.MoveNext() )

             Console.WriteLine("\t{0}:\t{1}",

                 myEnumerator.Key, myEnumerator.Value);

         Console.WriteLine();

     }

     public static void PrintByKeys( Hashtable myList )

     {

         IEnumerator ie = myList.Keys.GetEnumerator();

         while( ie.MoveNext() )

         {

             object key = ie.Current;

             object value = myList[ key ];

             Console.WriteLine("\t{0}:\t{1}", key, value );

         }

         Console.WriteLine();

         foreach( string key in myList.Keys )

         {

             Console.WriteLine("\t{0}:\t{1}", key, myList[key] );

         }

     }

 }