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UmAlQuraCalendar.IsLeapDay Method (Int32, Int32, Int32, Int32)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Determines whether the specified date is a leap day.

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

Syntax

'Declaration
Public Overrides Function IsLeapDay ( _
    year As Integer, _
    month As Integer, _
    day As Integer, _
    era As Integer _
) As Boolean

public override bool IsLeapDay(
    int year,
    int month,
    int day,
    int era
)

Parameters

  • month
    Type: System.Int32
    An integer from 1 through 12 that represents a month.
  • day
    Type: System.Int32
    An integer from 1 through 30 that represents a day.
  • era
    Type: System.Int32
    An era. Specify UmAlQuraCalendar.Eras[UmAlQuraCalendar.CurrentEra].

Return Value

Type: System.Boolean
Always false, because the UmAlQuraCalendar class does not support the notion of a leap day.

Exceptions

Exception Condition
ArgumentOutOfRangeException

year, month, day, or era is outside the range supported by the UmAlQuraCalendar class.

Remarks

A leap day is a day that occurs only in a leap year.

Examples

The following example calls the IsLeapDay method for the last day of the second month (February) for five years in each of the eras.

Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' Creates and initializes a HijriCalendar.
      Dim myCal As New HijriCalendar()

      ' Creates a holder for the last day of the second month (February).
      Dim iLastDay As Integer

      ' Displays the header.
      outputBlock.Text &= "YEAR" + ControlChars.Tab
      Dim y As Integer
      For y = 1421 To 1425
         outputBlock.Text += String.Format(ControlChars.Tab + "{0}", y)
      Next y
      outputBlock.Text &= vbCrLf

      ' Checks five years in the current era.
      outputBlock.Text &= "CurrentEra:"
      For y = 1421 To 1425
         iLastDay = myCal.GetDaysInMonth(y, 2, HijriCalendar.CurrentEra)
         outputBlock.Text += String.Format(ControlChars.Tab + "{0}", myCal.IsLeapDay(y, 2, iLastDay, HijriCalendar.CurrentEra))
      Next y
      outputBlock.Text &= vbCrLf

      ' Checks five years in each of the eras.
      Dim i As Integer
      For i = 0 To myCal.Eras.Length - 1
         outputBlock.Text += String.Format("Era {0}:" + ControlChars.Tab, myCal.Eras(i))
         For y = 1421 To 1425
            iLastDay = myCal.GetDaysInMonth(y, 2, myCal.Eras(i))
            outputBlock.Text += String.Format(ControlChars.Tab + "{0}", myCal.IsLeapDay(y, 2, iLastDay, myCal.Eras(i)))
         Next y
         outputBlock.Text &= vbCrLf
      Next i
   End Sub  
End Class 
'This code produces the following output.
'       YEAR            1421    1422    1423    1424    1425
'       CurrentEra:     False   False   False   False   False
'       Era 1:          False   False   False   False   False

using System;
using System.Globalization;


public class Example
{

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {

      // Creates and initializes a HijriCalendar.
      HijriCalendar myCal = new HijriCalendar();

      // Creates a holder for the last day of the second month (February).
      int iLastDay;

      // Displays the header.
      outputBlock.Text += "YEAR\t";
      for (int y = 1421; y <= 1425; y++)
         outputBlock.Text += String.Format("\t{0}", y);
      outputBlock.Text += "\n";

      // Checks five years in the current era.
      outputBlock.Text += "CurrentEra:";
      for (int y = 1421; y <= 1425; y++)
      {
         iLastDay = myCal.GetDaysInMonth(y, 2, HijriCalendar.CurrentEra);
         outputBlock.Text += String.Format("\t{0}", myCal.IsLeapDay(y, 2, iLastDay, HijriCalendar.CurrentEra));
      }
      outputBlock.Text += "\n";

      // Checks five years in each of the eras.
      for (int i = 0; i < myCal.Eras.Length; i++)
      {
         outputBlock.Text += String.Format("Era {0}:\t", myCal.Eras[i]);
         for (int y = 1421; y <= 1425; y++)
         {
            iLastDay = myCal.GetDaysInMonth(y, 2, myCal.Eras[i]);
            outputBlock.Text += String.Format("\t{0}", myCal.IsLeapDay(y, 2, iLastDay, myCal.Eras[i]));
         }
         outputBlock.Text += "\n";
      }

   }

}

/*
This code produces the following output.

YEAR            1421    1422    1423    1424    1425
CurrentEra:     False   False   False   False   False
Era 1:          False   False   False   False   False

*/

Version Information

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

Platforms

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