using System; public class MainClass { public static void Main() { foreach (TimeZoneInfo z in TimeZoneInfo.GetSystemTimeZones()) Console.WriteLine(z.Id); } }
Development Class
Convert To TimeZone
//Octavalent Extension Methods //http://sdfasdf.codeplex.com/ //Library of extension methods for .Net create by Octavalent (www.octavalent.nl) using System; public static class DateTimeExtensions { public static DateTime ConvertToTimeZone(this DateTime dateTime, string SystemTimeZoneId) { dateTime = dateTime.ToUniversalTime(); dateTime = dateTime.Add(TimeZoneInfo.FindSystemTimeZoneById(SystemTimeZoneId).GetUtcOffset(dateTime)); return dateTime; } }
The static TimeZone.CurrentTimeZone method returns a TimeZone object based on the current local settings
using System; public class MainClass { public static void Main() { TimeZone zone = TimeZone.CurrentTimeZone; Console.WriteLine(zone.StandardName); Console.WriteLine(zone.DaylightName); } }
The GetDaylightChanges method returns specific daylight saving information for a given year:
using System; using System.Globalization; public class MainClass { public static void Main() { TimeZone zone = TimeZone.CurrentTimeZone; DaylightTime day = zone.GetDaylightChanges(2008); Console.WriteLine(day.Start); Console.WriteLine(day.End); Console.WriteLine(day.Delta); } }
The IsDaylightSavingTime and GetUtcOffset methods work as follows:
using System; public class MainClass { public static void Main() { TimeZone zone = TimeZone.CurrentTimeZone; DateTime dt1 = new DateTime(2008, 1, 1); DateTime dt2 = new DateTime(2008, 6, 1); Console.WriteLine(zone.IsDaylightSavingTime(dt1)); Console.WriteLine(zone.IsDaylightSavingTime(dt2)); Console.WriteLine(zone.GetUtcOffset(dt1)); Console.WriteLine(zone.GetUtcOffset(dt2)); } }
Initalize a timespan to 25 milliseconds
using System; public class ToString { public static void Main() { TimeSpan span; span = new TimeSpan(0, 0, 0, 0, 25); } }
Display the properties for myTimeSpan
using System; class MainClass { public static void Main() { int hours = 4; int minutes = 12; int seconds = 10; int days = 1; int milliseconds = 20; long ticks = 300; TimeSpan myTimeSpan = new TimeSpan(ticks); Console.WriteLine("myTimeSpan4 = " + myTimeSpan); Console.WriteLine("myTimeSpan.Days = " + myTimeSpan.Days); Console.WriteLine("myTimeSpan.Hours = " + myTimeSpan.Hours); Console.WriteLine("myTimeSpan.Minutes = " + myTimeSpan.Minutes); Console.WriteLine("myTimeSpan.Seconds = " + myTimeSpan.Seconds); Console.WriteLine("myTimeSpan.Milliseconds = " + myTimeSpan.Milliseconds); Console.WriteLine("myTimeSpan.Ticks = " + myTimeSpan.Ticks); Console.WriteLine("myTimeSpan.TotalDays = " + myTimeSpan.TotalDays); Console.WriteLine("myTimeSpan.TotalHours = " + myTimeSpan.TotalHours); Console.WriteLine("myTimeSpan.TotalMinutes = " +myTimeSpan.TotalMinutes); Console.WriteLine("myTimeSpan.TotalSeconds = " + myTimeSpan.TotalSeconds); Console.WriteLine("myTimeSpan.TotalMilliseconds = " + myTimeSpan.TotalMilliseconds); } }