Share via


GregorianCalendar.GetDayOfYear Method

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

Returns the day of the year in the specified DateTime.

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

Syntax

'Declaration
Public Overrides Function GetDayOfYear ( _
    time As DateTime _
) As Integer
public override int GetDayOfYear(
    DateTime time
)

Parameters

Return Value

Type: System.Int32
An integer from 1 to 366 that represents the day of the year in time.

Remarks

The day of the year is defined as the number of days from the first day of the year. For example, GetDayOfYear for the first day of the first month returns 1, and GetDayOfYear for the last day of the last month returns the total number of days in that year, which is the same value returned by GetDaysInYear.

Examples

The following code example displays the values of several components of a DateTime in terms of the Gregorian calendar.

Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' Sets a DateTime to April 3, 2002 of the Gregorian calendar.
      Dim myDT As New DateTime(2002, 4, 3, New GregorianCalendar())

      ' Creates an instance of the GregorianCalendar.
      Dim myCal As New GregorianCalendar()

      ' Displays the values of the DateTime.
      outputBlock.Text += String.Format("April 3, 2002 of the Gregorian calendar:") & vbCrLf
      DisplayValues(outputBlock, myCal, myDT)

      ' Adds two years and ten months.
      myDT = myCal.AddYears(myDT, 2)
      myDT = myCal.AddMonths(myDT, 10)

      ' Displays the values of the DateTime.
      outputBlock.Text &= "After adding two years and ten months:" & vbCrLf
      DisplayValues(outputBlock, myCal, myDT)
   End Sub 

   Public Shared Sub DisplayValues(ByVal outputBlock As System.Windows.Controls.TextBlock, _
                                   ByVal myCal As Calendar, ByVal myDT As DateTime)
      outputBlock.Text += String.Format("   Era:        {0}", myCal.GetEra(myDT)) & vbCrLf
      outputBlock.Text += String.Format("   Year:       {0}", myCal.GetYear(myDT)) & vbCrLf
      outputBlock.Text += String.Format("   Month:      {0}", myCal.GetMonth(myDT)) & vbCrLf
      outputBlock.Text += String.Format("   DayOfYear:  {0}", myCal.GetDayOfYear(myDT)) & vbCrLf
      outputBlock.Text += String.Format("   DayOfMonth: {0}", myCal.GetDayOfMonth(myDT)) & vbCrLf
      outputBlock.Text += String.Format("   DayOfWeek:  {0}", myCal.GetDayOfWeek(myDT)) & vbCrLf
      outputBlock.Text &= vbCrLf
   End Sub 
End Class 
' This example produces the following output.
'       April 3, 2002 of the Gregorian calendar:
'          Era:        1
'          Year:       2002
'          Month:      4
'          DayOfYear:  93
'          DayOfMonth: 3
'          DayOfWeek:  Wednesday
'       
'       After adding two years and ten months:
'          Era:        1
'          Year:       2005
'          Month:      2
'          DayOfYear:  34
'          DayOfMonth: 3
'          DayOfWeek:  Thursday
using System;
using System.Globalization;


public class Example
{

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

      // 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 GregorianCalendar.
      GregorianCalendar myCal = new GregorianCalendar();

      // Displays the values of the DateTime.
      outputBlock.Text += String.Format("April 3, 2002 of the Gregorian calendar:") + "\n";
      DisplayValues(outputBlock, myCal, myDT);

      // Adds two years and ten months.
      myDT = myCal.AddYears(myDT, 2);
      myDT = myCal.AddMonths(myDT, 10);

      // Displays the values of the DateTime.
      outputBlock.Text += "After adding two years and ten months:" + "\n";
      DisplayValues(outputBlock, myCal, myDT);

   }

   public static void DisplayValues(System.Windows.Controls.TextBlock outputBlock, Calendar myCal, DateTime myDT)
   {
      outputBlock.Text += String.Format("   Era:        {0}", myCal.GetEra(myDT)) + "\n";
      outputBlock.Text += String.Format("   Year:       {0}", myCal.GetYear(myDT)) + "\n";
      outputBlock.Text += String.Format("   Month:      {0}", myCal.GetMonth(myDT)) + "\n";
      outputBlock.Text += String.Format("   DayOfYear:  {0}", myCal.GetDayOfYear(myDT)) + "\n";
      outputBlock.Text += String.Format("   DayOfMonth: {0}", myCal.GetDayOfMonth(myDT)) + "\n";
      outputBlock.Text += String.Format("   DayOfWeek:  {0}", myCal.GetDayOfWeek(myDT)) + "\n";
      outputBlock.Text += "\n";
   }

}

/*
This code produces the following output.

April 3, 2002 of the Gregorian calendar:
   Era:        1
   Year:       2002
   Month:      4
   DayOfYear:  93
   DayOfMonth: 3
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:        1
   Year:       2005
   Month:      2
   DayOfYear:  34
   DayOfMonth: 3
   DayOfWeek:  Thursday

*/

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.