// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002228/datetime-converttimebysystemtimezoneid

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        DateTime date = DateTime.Now;

​

        // C# Extension Method: DateTime  - ConvertTimeBySystemTimeZoneId

        DateTime result = date.ConvertTimeBySystemTimeZoneId("Tokyo Standard Time");

        Console.WriteLine("Current Time in different time zones:\n");

​

        Console.WriteLine("{0}: {1}",TimeZoneInfo.Local.StandardName, date);

        Console.WriteLine("{0}: {1}","Tokyo Standard Time", result);

    }

}