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UmAlQuraCalendar Class

Represents the Saudi Hijri (Um Al Qura) calendar.

System.Object
  System.Globalization.Calendar
    System.Globalization.UmAlQuraCalendar

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)

public class UmAlQuraCalendar : Calendar

The UmAlQuraCalendar type exposes the following members.

  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360UmAlQuraCalendarInitializes a new instance of the UmAlQuraCalendar class.
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  NameDescription
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360ErasGets a list of the eras that are supported by the current UmAlQuraCalendar. (Overrides Calendar.Eras.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360IsReadOnlyGets a value indicating whether this Calendar object is read-only. (Inherited from Calendar.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360MaxSupportedDateTimeGets the latest date and time supported by this calendar. (Overrides Calendar.MaxSupportedDateTime.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360MinSupportedDateTimeGets the earliest date and time supported by this calendar. (Overrides Calendar.MinSupportedDateTime.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360TwoDigitYearMaxGets or sets the last year of a 100-year range that can be represented by a 2-digit year. (Overrides Calendar.TwoDigitYearMax.)
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  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddDaysReturns a DateTime that is the specified number of days away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddHoursReturns a DateTime that is the specified number of hours away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddMillisecondsReturns a DateTime that is the specified number of milliseconds away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddMinutesReturns a DateTime that is the specified number of minutes away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddMonthsCalculates a date that is a specified number of months away from a specified initial date. (Overrides Calendar.AddMonths(DateTime, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddSecondsReturns a DateTime that is the specified number of seconds away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddWeeksReturns a DateTime that is the specified number of weeks away from the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360AddYearsCalculates a date that is a specified number of years away from a specified initial date. (Overrides Calendar.AddYears(DateTime, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360Equals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360FinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDayOfMonthCalculates on which day of the month a specified date occurs. (Overrides Calendar.GetDayOfMonth(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDayOfWeekCalculates on which day of the week a specified date occurs. (Overrides Calendar.GetDayOfWeek(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDayOfYearCalculates on which day of the year a specified date occurs. (Overrides Calendar.GetDayOfYear(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDaysInMonth(Int32, Int32)Returns the number of days in the specified month and year of the current era. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDaysInMonth(Int32, Int32, Int32)Calculates the number of days in the specified month of the specified year and era. (Overrides Calendar.GetDaysInMonth(Int32, Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDaysInYear(Int32)Returns the number of days in the specified year of the current era. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetDaysInYear(Int32, Int32)Calculates the number of days in the specified year of the specified era. (Overrides Calendar.GetDaysInYear(Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetEraReturns the era of a specified DateTime value. (Overrides Calendar.GetEra(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetHourReturns the hours value in the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetLeapMonthCalculates the leap month for a specified year and era. (Overrides Calendar.GetLeapMonth(Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetMillisecondsReturns the milliseconds value in the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetMinuteReturns the minutes value in the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetMonthCalculates the month in which a specified date occurs. (Overrides Calendar.GetMonth(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetMonthsInYear(Int32)Returns the number of months in the specified year in the current era. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetMonthsInYear(Int32, Int32)Calculates the number of months in the specified year of the specified era. (Overrides Calendar.GetMonthsInYear(Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetSecondReturns the seconds value in the specified DateTime. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetWeekOfYearReturns the week of the year that includes the date in the specified DateTime value. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetYearCalculates the year of a date represented by a specified DateTime. (Overrides Calendar.GetYear(DateTime).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapDay(Int32, Int32, Int32)Determines whether the specified date in the current era is a leap day. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapDay(Int32, Int32, Int32, Int32)Determines whether the specified date is a leap day. (Overrides Calendar.IsLeapDay(Int32, Int32, Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapMonth(Int32, Int32)Determines whether the specified month in the specified year in the current era is a leap month. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapMonth(Int32, Int32, Int32)Determines whether the specified month in the specified year and era is a leap month. (Overrides Calendar.IsLeapMonth(Int32, Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapYear(Int32)Determines whether the specified year in the current era is a leap year. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360IsLeapYear(Int32, Int32)Determines whether the specified year in the specified era is a leap year. (Overrides Calendar.IsLeapYear(Int32, Int32).)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360MemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32)Returns a DateTime that is set to the specified date and time in the current era. (Inherited from Calendar.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32)Returns a DateTime that is set to the specified date, time, and era. (Overrides Calendar.ToDateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToFourDigitYearConverts the specified year to a four-digit year by using the TwoDigitYearMax property to determine the appropriate century. (Overrides Calendar.ToFourDigitYear(Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToStringReturns a string that represents the current object. (Inherited from Object.)
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The UmAlQuraCalendar class is nearly identical to the HijriCalendar class, except that the UmAlQuraCalendar class:

  • Uses a table-based algorithm licensed from the Saudi government to calculate dates.

  • Consists of months that have either 29 or 30 days, although the precise number of days in a month is usually not predictable. Although the documentation for the HijriCalendar class includes a table that shows the corresponding days in each month, no such general table can be produced for the UmAlQuraCalendar class.

  • Can express dates to the year 1450 A.H. (Latin "Anno Hegirae", which means "the year of the migration," in reference to the migration of Muhammad from Mecca).

  • Does not support the HijriCalendar.HijriAdjustment property.

Each CultureInfo object supports a set of calendars. The CultureInfo.Calendar property returns the default calendar for the culture, and the CultureInfo.OptionalCalendars property returns an array that contains all the calendars supported by the culture. To change the calendar used by a CultureInfo object, the application can set the Calendar property of CultureInfo.DateTimeFormat to a new Calendar object if the new calendar is one of the culture's optional calendars. The following example shows how to change the calendar for the ar-AE culture to the Um Al Qura calendar.


// Change the calendar used by a ar-AE CultureInfo object from Gregorian to Um Al Qura. 
CultureInfo uaeCulture = new CultureInfo("ar-AE");
Calendar originalCalendar = uaeCulture.Calendar;
string message = null;

// Confirm that the default calendar is not the Um Al Qura calendar.
if (originalCalendar.ToString() != "System.Globalization.UmAlQuraCalendar")
{
   // Check whether the culture supports the Gregorian calendar.
   bool supported = false;
   foreach (Calendar supportedCal in uaeCulture.OptionalCalendars)
{
      if (supportedCal.ToString() == "System.Globalization.UmAlQuraCalendar")
      {
         supported = true;
         uaeCulture.DateTimeFormat.Calendar = supportedCal;
         message = String.Format("Changed the current calendar for the {0} culture from {1} to {2}.",
                                 uaeCulture.ToString(),
                                 originalCalendar.ToString().Replace("System.Globalization.", ""),
                                 supportedCal.ToString().Replace("System.Globalization.", ""));                                 
         break;
      }
   }        
   if (! supported) message = "The Um Al Qura calendar is not supported.";
}
else
{
   message = String.Format("Um Al Qura is the default calendar for the {0} culture.",
                           uaeCulture.ToString());
}
outputBlock.Text += message + "\n";
// The example displays the following output:
//   Changed the current calendar for the ar-AE culture from GregorianCalendar to UmAlQuraCalendar.


Note   The UmAlQuraCalendar class supports only dates from 04/30/1900 00.00.00 (Gregorian date) through 05/13/2029 23:59:59 (Gregorian date). An ArgumentOutOfRangeException is thrown if the calendar attempts to handle any date outside that range.

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

This type is present but is not currently supported on Windows Phone.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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