C#

<br />
using System;<br />
using System.Collections;<br />
<br />
namespace ConsoleApplication2 <br />
{<br />
<br />
	class Class1 <br />
	{<br />
<br />
		[STAThread]<br />
		static void Main(string[] args) <br />
		{<br />
			Hashtable region = new Hashtable();<br />
			IDictionaryEnumerator ide; // to walk thru the hashtable<br />
			ArrayList al;<br />
			IEnumerator ie; // to walk thru an arraylist<br />
			string indicator = "";  <br />
<br />
			do <br />
			{<br />
				Console.Write("Enter region name: ");	<br />
				region.Add(Console.ReadLine(), new ArrayList());			<br />
			<br />
				Console.Write("Enter another region? (y/n): ");<br />
				indicator = Console.ReadLine();<br />
<br />
			} while(indicator.ToUpper() == "Y");<br />
			<br />
			// walk the hashtable and add a single string ("foo") to each arraylist<br />
			ide = region.GetEnumerator();<br />
			while (ide.MoveNext()) <br />
			{<br />
				al = (ArrayList)ide.Value;<br />
				al.Add("foo");<br />
			}<br />
<br />
			// now walk the hashtable AND arraylists to print everything<br />
			ide = region.GetEnumerator();<br />
			while (ide.MoveNext()) <br />
			{<br />
				al = (ArrayList)ide.Value;<br />
				ie = al.GetEnumerator();<br />
				 while (ie.MoveNext()) <br />
				{<br />
					Console.WriteLine("hash key: {1}  array value: {2}",(string)ide.Key, (string)ie.Current);<br />
				} <br />
<br />
				Console.WriteLine(ide.Key);<br />
				Console.WriteLine(ide.Current);<br />
			}<br />
<br />
			Console.ReadLine();<br />
		}<br />
	}<br />
<br />
<br />
}<br />