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C# TimeZone Examples
Use the TimeZone type, which is a class in the System namespace that represents different time zones.TimeZone describes the current time zone. It gets information about the time zone of the current computer. Time zones on the planet Earth change on lines on longitude. You cannot assume a particular time zone.
Names. What is the name of a specific time zone? The .NET Framework contains information about the names for time zones. You can access the properties StandardName and DaylightName to get these strings.
Also: This example shows how to get the current time zone with the TimeZone.CurrentTimeZone property accessor.
C# program that gets time zone names
using System;
class Program
{
static void Main()
{
// Get current time zone.
TimeZone zone = TimeZone.CurrentTimeZone;
string standard = zone.StandardName;
string daylight = zone.DaylightName;
Console.WriteLine(standard);
Console.WriteLine(daylight);
}
}
Output
Mountain Standard Time
Mountain Daylight Time
Universal time. There are two concepts of time you can use. The local time depends on where the computer is located. The universal time is independent of this. With universal times, you can compare times from different locations with no errors.
C# program that checks universal and local times
using System;
class Program
{
static void Main()
{
TimeZone zone = TimeZone.CurrentTimeZone;
// Demonstrate ToLocalTime and ToUniversalTime.
DateTime local = zone.ToLocalTime(DateTime.Now);
DateTime universal = zone.ToUniversalTime(DateTime.Now);
Console.WriteLine(local);
Console.WriteLine(universal);
}
}
Output
8/26/2010 1:02:28 PM
8/26/2010 7:02:28 PM
Get offsets. A UTC offset indicates how many hours a time zone differs from the Coordinated Universal Time. When you call GetUtcOffset on a TimeZone instance, you get a TimeSpan instance that indicates how many hours the time is different from UTC.TimeSpan
Note: Coordinated Universal Time is also referred to as Zulu Time or Greenwich Mean Time.
C# program that checks UTC offset
using System;
class Program
{
static void Main()
{
TimeZone zone = TimeZone.CurrentTimeZone;
// Get offset.
TimeSpan offset = zone.GetUtcOffset(DateTime.Now);
Console.WriteLine(offset);
}
}
Output
-06:00:00
Day light changes. In this example, we get information about the current year's daylight saving changes. If you need to know when the Day light Changes are, this method is ideal.
C# program that shows daylight changes
using System;
using System.Globalization;
class Program
{
static void Main()
{
// Get daylight saving information for current time zone.
TimeZone zone = TimeZone.CurrentTimeZone;
DaylightTime time = zone.GetDaylightChanges(DateTime.Today.Year);
Console.WriteLine("Start: {0}", time.Start);
Console.WriteLine("End: {0}", time.End);
Console.WriteLine("Delta: {0}", time.Delta);
}
}
Output
Start: 3/14/2010 2:00:00 AM
End: 11/7/2010 2:00:00 AM
Delta: 01:00:00
Daylight saving time. This program scans individual dates for their daylight saving status. For repeated usage, it is probably better to use GetDaylightChanges instead of IsDaylightSavingTime. But IsDaylightSavingTime can be useful in some cases.
C# program that checks daylight saving time
using System;
class Program
{
static void Main()
{
DateTime d = new DateTime(2010, 1, 1);
TimeZone cur = TimeZone.CurrentTimeZone;
bool flag = !cur.IsDaylightSavingTime(d);
for (int i = 0; i < 365; i++)
{
bool f = cur.IsDaylightSavingTime(d);
if (f != flag)
{
Console.WriteLine("{0}: begin {1}", d, f);
flag = f;
}
d = d.AddDays(1);
}
}
}
Output
1/1/2010 12:00:00 AM: begin False
3/15/2010 12:00:00 AM: begin True
11/8/2010 12:00:00 AM: begin False
Summary. The TimeZone type in the C# language and .NET Framework provides a handy way to get information about time zones. We use the CurrentTimeZone property to get the information for the computer.
Then: We can call methods that reveal information about daylight saving time universal times and UTC offsets.
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- C# Regex Groups, Named Group Example
- C# Regex.Matches Quote Example
- C# Regex.Matches Method: foreach Match, Capture
- C# Regex.Replace, Matching End of String
- C# Regex.Replace, Remove Numbers From String
- C# Regex.Replace, Merge Multiple Spaces
- C# Regex.Replace Examples: MatchEvaluator
- C# Regex.Split, Get Numbers From String
- C# Regex.Split Examples
- C# Regex Trim, Remove Start and End Spaces
- C# RegexOptions.Compiled
- C# RegexOptions.IgnoreCase Example
- C# RegexOptions.Multiline
- C# Region and endregion
- C# Remove Char From String at Index
- C# Remove Element
- C# Remove HTML Tags
- C# Remove String
- C# Reserved Filenames
- C# return Keyword
- C# Reverse String
- C# Reverse Words
- C# Reverse Extension Method
- C# RichTextBox Example
- C# Right String Part
- C# RNGCryptoServiceProvider Example
- C# ROT13 Method, Char Lookup Table
- C# SelectMany Example: LINQ
- C# Sentinel Optimization
- C# SequenceEqual Method (If Two Arrays Are Equal)
- C# Shift Operators (Bitwise)
- C# Short and ushort Types
- C# Single Method: Get Element If Only One Matches
- C# SingleOrDefault
- C# Singleton Pattern Versus Static Class
- C# Singleton Class
- C# sizeof Keyword
- C# Skip and SkipWhile Examples
- C# Sleep Method (Pause)
- C# Sort Dictionary: Keys and Values
- C# Sort by File Size
- C# Sort, Ignore Leading Chars
- C# Sort KeyValuePair List: CompareTo
- C# Sort Strings by Length
- C# Thread.SpinWait Example
- C# Math.Sqrt Method
- C# stackalloc Operator
- C# StackOverflowException
- C# StartsWith and EndsWith String Methods
- C# Static Array
- C# Static Dictionary
- C# Stopwatch Examples
- C# Stream
- C# StreamReader ReadToEnd Example (Read Entire File)
- C# StreamReader ReadToEndAsync Example (Performance)
- C# StreamReader Examples
- C# StreamWriter Examples
- C# String Append (Add Strings)
- C# String Compare and CompareTo Methods
- C# String Constructor (new string)
- C# string.Copy Method
- C# CopyTo String Method: Put Chars in Array
- C# Empty String Examples
- C# String Equals Examples
- C# String For Loop, Count Spaces in String
- C# string.Intern and IsInterned
- C# String IsUpper, IsLower
- C# String Length Property: Get Character Count
- C# String Literal: Newline and Quote Examples
- C# StringBuilder Capacity
- C# StringBuilder Clear (Set Length to Zero)
- C# StringBuilder Data Types
- C# StringBuilder Performance
- C# StringBuilder Equals (If Chars Are Equal)
- C# StringBuilder Memory
- C# StringBuilder ToString: Get String From StringBuilder
- C# StringWriter Class
- C# Sum Method: Add up All Numbers
- C# Switch Char, Test Chars With Cases
- C# Switch Enum
- C# System (using System namespace)
- C# Tag Property: Windows Forms
- C# TextInfo Examples
- C# TextReader, Returned by File.OpenText
- C# TextWriter, Returned by File.CreateText
- C# this Keyword
- C# ThreadPool
- C# Thread Join Method (Join Array of Threads)
- C# ThreadPool.SetMinThreads Method
- C# TimeZone Examples
- C# Get Title From HTML With Regex
- C# ToArray Extension Method
- C# ToCharArray: Convert String to Array
- C# ToDictionary Method
- C# Token
- C# ToList Extension Method
- C# ToLookup Method (Get ILookup)
- C# ToLower and ToUpper: Uppercase and Lowercase Strings
- ToolStripContainer Control: Dock, Properties
- C# ToolTip: Windows Forms
- C# ToString Integer Optimization
- C# ToString: Get String From Object
- C# ToTitleCase Method
- C# TrackBar: Windows Forms
- C# Tree and Nodes Example: Directed Acyclic Word Graph
- C# TreeView Tutorial
- C# Trim Strings
- C# Thread Methods
- C# History
- C# Features
- C# Variables
- C# Data Types
- C# Operators
- C# Keywords
- C# New Features | C# Version Features
- C# Programs
- C# Program to swap numbers without third variable
- C# Program to convert Decimal to Binary
- C# Program to Convert Number in Characters
- C# Program to Print Alphabet Triangle
- C# Program to print Number Triangle
- C# Program to generate Fibonacci Triangle
- C# String Compare() method
- C# String CompareOrdinal() method
- C# String CompareTo() method
- C# String Concat() method
- C# String Contains() method
- C# String CopyTo() method
- C# String EndsWith() method
- C# String Equals() method
- C# String Format() method
- C# String IndexOf() method
- C# String Insert() method
- C# String Intern(String str) method
- C# String IsInterned() method
- C# String Normalize() method
- C# String IsNullOrEmpty() method
- C# String IsNullOrWhiteSpace() method
- C# String Join() method
- C# String LastIndexOf() method
- C# String LastIndexOfAny() method
- C# String PadLeft() method
- C# String PadRight() method
- C# Nullable
- C# String Remove() method
- C# String Replace() method
- C# String Split() method
- C# String StartsWith() method
- C# String SubString() method
- C# Partial Types
- C# Iterators
- C# Delegate Covariance
- C# Delegate Inference
- C# Anonymous Types
- C# Extension Methods
- C# Query Expression
- C# Partial Method
- C# Implicitly Typed Local Variable
- C# Object and Collection Initializer
- C# Auto Implemented Properties
- C# Dynamic Binding
- C# Named and Optional Arguments
- C# Asynchronous Methods
- C# Caller Info Attributes
- C# Using Static Directive
- C# Exception Filters
- C# Await in Catch Finally Blocks
- C# Default Values for Getter Only Properties
- C# Expression Bodied Members
- C# Null Propagator
- C# String Interpolation
- C# nameof operator
- C# Dictionary Initializer
- C# Pattern Matching
- C# Tuples
- C# Deconstruction
- C# Local Functions
- C# Binary Literals
- C# Ref Returns and Locals
- C# Expression Bodied Constructors and Finalizers
- C# Expression Bodied Getters and Setters
- C# Async Main
- C# Default Expression