http://dotnetfiddle.net/8deNce

List TimeZones in .NET

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
					
public class Program
{
	public static void Main()
	{
	
		foreach (TimeZoneInfo timeZone in TimeZoneInfo.GetSystemTimeZones()){
			Console.WriteLine("{0}: {1}", timeZone.Id, timeZone.DisplayName);
		}
		Console.WriteLine(TimeZoneInfo.GetSystemTimeZones().Count);
		
	}
}