[.NET] System.Globalization 一個很有趣的命名空間

System.Globalization 命名空間 (Namespace) 包含定義文化特性相關資訊的類別，包括語言、國家/地區、使用中的曆法、日期、貨幣和數字格式模式，以及字串的排序順序。這些類別 (Class) 對撰寫全球化 (國際化) 的應用程式很有用。像 StringInfo 和 TextInfo 之類的類別即提供進階的全球化功能，例如 Surrogate 支援和文字項目處理。

其中的

TaiwanCalendar

TaiwanLunisolarCalendar

分別是代表台灣的曆法和陰曆

System.Globalization當然還有其他各國的曆法

而它們的使用方法都相同,以下範例程式用TaiwanCalendar代表

using System;

using System.Globalization;

public class SamplesTaiwanCalendar {

public static void Main() {

// Sets a DateTime to April 3, 2002 of the Gregorian calendar.

DateTime myDT = new DateTime( 2002, 4, 3, new GregorianCalendar() );

// Creates an instance of the TaiwanCalendar.

TaiwanCalendar myCal = new TaiwanCalendar();

// Displays the values of the DateTime.

Console.WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Taiwan calendar:" );

DisplayValues( myCal, myDT );

// Adds two years and ten months.

myDT = myCal.AddYears( myDT, 2 );

myDT = myCal.AddMonths( myDT, 10 );

// Displays the values of the DateTime.

Console.WriteLine( "After adding two years and ten months:" );

DisplayValues( myCal, myDT );

}

public static void DisplayValues( Calendar myCal, DateTime myDT ) {

Console.WriteLine( " Era: {0}", myCal.GetEra( myDT ) );

Console.WriteLine( " Year: {0}", myCal.GetYear( myDT ) );

Console.WriteLine( " Month: {0}", myCal.GetMonth( myDT ) );

Console.WriteLine( " DayOfYear: {0}", myCal.GetDayOfYear( myDT ) );

Console.WriteLine( " DayOfMonth: {0}", myCal.GetDayOfMonth( myDT ) );

Console.WriteLine( " DayOfWeek: {0}", myCal.GetDayOfWeek( myDT ) );

Console.WriteLine();

}

}

/*

This code produces the following output.

April 3, 2002 of the Gregorian calendar equals the following in the Taiwan calendar:

Era: 1

Year: 91

Month: 4

DayOfYear: 93

DayOfMonth: 3

DayOfWeek: Wednesday

After adding two years and ten months:

Era: 1

Year: 94

Month: 2

DayOfYear: 34

DayOfMonth: 3

DayOfWeek: Thursday

*/