Calendar.GetDaysInYear Method (Int32)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Returns the number of days in the specified year of the current era.

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

Syntax

Public Overridable Function GetDaysInYear ( _
    year As Integer _
) As Integer
public virtual int GetDaysInYear(
    int year
)

Parameters

Return Value

Type: System..::.Int32
The number of days in the specified year in the current era.

Exceptions

Exception Condition
ArgumentOutOfRangeException

year is outside the range supported by the calendar.

Remarks

For example, in GregorianCalendar, GetDaysInYear returns 365 for a common year or 366 for a leap year.

Examples

The following code example compares different implementations of the Calendar class.

Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)

      ' Creates an instance of every Calendar type.
      Dim myCals(6) As Calendar
      myCals(0) = New GregorianCalendar()
      myCals(1) = New HebrewCalendar()
      myCals(2) = New HijriCalendar()
      myCals(3) = New JapaneseCalendar()
      myCals(4) = New KoreanCalendar()
      myCals(5) = New TaiwanCalendar()
      myCals(6) = New ThaiBuddhistCalendar()

      ' For each calendar, displays the current year, the number of months in that year,
      ' and the number of days in each month of that year.
      Dim i, j, iYear, iMonth, iDay As Integer
      Dim myDT As DateTime = DateTime.Today

      For i = 0 To myCals.Length - 1
         iYear = myCals(i).GetYear(myDT)
         outputBlock.Text &= vbCrLf
         outputBlock.Text += String.Format("{0}, Year: {1}", myCals(i).GetType(), myCals(i).GetYear(myDT)) & vbCrLf
         outputBlock.Text += String.Format("   MonthsInYear: {0}", myCals(i).GetMonthsInYear(iYear)) & vbCrLf
         outputBlock.Text += String.Format("   DaysInYear: {0}", myCals(i).GetDaysInYear(iYear)) & vbCrLf
         outputBlock.Text &= "   Days in each month:" & vbCrLf
         outputBlock.Text &= "      "

         For j = 1 To myCals(i).GetMonthsInYear(iYear)
            outputBlock.Text += String.Format(" {0,-5}", myCals(i).GetDaysInMonth(iYear, j))
         Next j
         outputBlock.Text &= vbCrLf

         iMonth = myCals(i).GetMonth(myDT)
         iDay = myCals(i).GetDayOfMonth(myDT)
         outputBlock.Text += String.Format("   IsLeapDay:   {0}", myCals(i).IsLeapDay(iYear, iMonth, iDay)) & vbCrLf
         outputBlock.Text += String.Format("   IsLeapMonth: {0}", myCals(i).IsLeapMonth(iYear, iMonth)) & vbCrLf
         outputBlock.Text += String.Format("   IsLeapYear:  {0}", myCals(i).IsLeapYear(iYear)) & vbCrLf
      Next
   End Sub 
End Class  
'This code produces the following output.  The results vary depending on the date.
'       
'       System.Globalization.GregorianCalendar, Year: 2002
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
'       
'       System.Globalization.HebrewCalendar, Year: 5763
'          MonthsInYear: 13
'          DaysInYear: 385
'          Days in each month:
'              30    30    30    29    30    30    29    30    29    30    29    30    29   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  True
'       
'       System.Globalization.HijriCalendar, Year: 1423
'          MonthsInYear: 12
'          DaysInYear: 355
'          Days in each month:
'              30    29    30    29    30    29    30    29    30    29    30    30   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  True
'       
'       System.Globalization.JapaneseCalendar, Year: 14
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
'       
'       System.Globalization.JulianCalendar, Year: 2002
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
'       
'       System.Globalization.KoreanCalendar, Year: 4335
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
'       
'       System.Globalization.TaiwanCalendar, Year: 91
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
'       
'       System.Globalization.ThaiBuddhistCalendar, Year: 2545
'          MonthsInYear: 12
'          DaysInYear: 365
'          Days in each month:
'              31    28    31    30    31    30    31    31    30    31    30    31   
'          IsLeapDay:   False
'          IsLeapMonth: False
'          IsLeapYear:  False
using System;
using System.Globalization;


public class Example
{

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

      // Creates an instance of every Calendar type.
      Calendar[] myCals = new Calendar[7];
      myCals[0] = new GregorianCalendar();
      myCals[1] = new HebrewCalendar();
      myCals[2] = new HijriCalendar();
      myCals[3] = new JapaneseCalendar();
      myCals[4] = new KoreanCalendar();
      myCals[5] = new TaiwanCalendar();
      myCals[6] = new ThaiBuddhistCalendar();

      // For each calendar, displays the current year, the number of months in that year,
      // and the number of days in each month of that year.
      int i, j, iYear, iMonth, iDay;
      DateTime myDT = DateTime.Today;

      for (i = 0; i < myCals.Length; i++)
      {
         iYear = myCals[i].GetYear(myDT);
         outputBlock.Text += "\n";
         outputBlock.Text += String.Format("{0}, Year: {1}", myCals[i].GetType(), myCals[i].GetYear(myDT)) + "\n";
         outputBlock.Text += String.Format("   MonthsInYear: {0}", myCals[i].GetMonthsInYear(iYear)) + "\n";
         outputBlock.Text += String.Format("   DaysInYear: {0}", myCals[i].GetDaysInYear(iYear)) + "\n";
         outputBlock.Text += "   Days in each month:" + "\n";
         outputBlock.Text += "      ";

         for (j = 1; j <= myCals[i].GetMonthsInYear(iYear); j++)
            outputBlock.Text += String.Format(" {0,-5}", myCals[i].GetDaysInMonth(iYear, j));
         outputBlock.Text += "\n";

         iMonth = myCals[i].GetMonth(myDT);
         iDay = myCals[i].GetDayOfMonth(myDT);
         outputBlock.Text += String.Format("   IsLeapDay:   {0}", myCals[i].IsLeapDay(iYear, iMonth, iDay)) + "\n";
         outputBlock.Text += String.Format("   IsLeapMonth: {0}", myCals[i].IsLeapMonth(iYear, iMonth)) + "\n";
         outputBlock.Text += String.Format("   IsLeapYear:  {0}", myCals[i].IsLeapYear(iYear)) + "\n";

      }

   }

}


/*
This code produces the following output.  The results vary depending on the date.

System.Globalization.GregorianCalendar, Year: 2002
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

System.Globalization.HebrewCalendar, Year: 5763
   MonthsInYear: 13
   DaysInYear: 385
   Days in each month:
       30    30    30    29    30    30    29    30    29    30    29    30    29   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  True

System.Globalization.HijriCalendar, Year: 1423
   MonthsInYear: 12
   DaysInYear: 355
   Days in each month:
       30    29    30    29    30    29    30    29    30    29    30    30   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  True

System.Globalization.JapaneseCalendar, Year: 14
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

System.Globalization.JulianCalendar, Year: 2002
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

System.Globalization.KoreanCalendar, Year: 4335
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

System.Globalization.TaiwanCalendar, Year: 91
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

System.Globalization.ThaiBuddhistCalendar, Year: 2545
   MonthsInYear: 12
   DaysInYear: 365
   Days in each month:
       31    28    31    30    31    30    31    31    30    31    30    31   
   IsLeapDay:   False
   IsLeapMonth: False
   IsLeapYear:  False

*/

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

Calendar Class

GetDaysInYear Overload

System.Globalization Namespace

GregorianCalendar

GetMonthsInYear

GetDaysInMonth