GregorianCalendar.GetDaysInMonth Method (Int32, Int32, Int32)
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Returns the number of days in the specified month in the specified year in the specified era.
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Overrides Function GetDaysInMonth ( _
year As Integer, _
month As Integer, _
era As Integer _
) As Integer
public override int GetDaysInMonth(
int year,
int month,
int era
)
Parameters
- year
Type: System.Int32
An integer that represents the year.
- month
Type: System.Int32
An integer from 1 to 12 that represents the month.
- era
Type: System.Int32
An integer that represents the era.
Return Value
Type: System.Int32
The number of days in the specified month in the specified year in the specified era.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | era is outside the range supported by the calendar. -or- year is outside the range supported by the calendar. -or- month is outside the range supported by the calendar. |
Remarks
For example, this method returns 28 or 29 for February (month = 2), depending on whether year is a leap year.
Examples
The following code example calls GetDaysInMonth for the second month in each of five years in each era.
Imports System.Globalization
Public Class Example
Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
' Creates and initializes a GregorianCalendar.
Dim myCal As New GregorianCalendar()
' Displays the header.
outputBlock.Text &= "YEAR" + ControlChars.Tab
Dim y As Integer
For y = 2001 To 2005
outputBlock.Text += String.Format(vbTab + "{0}", y)
Next y
outputBlock.Text &= vbCrLf
' Displays the value of the CurrentEra property.
outputBlock.Text &= "CurrentEra:"
For y = 2001 To 2005
outputBlock.Text += String.Format(ControlChars.Tab + "{0}", _
myCal.GetDaysInMonth(y, 2, GregorianCalendar.CurrentEra))
Next y
outputBlock.Text &= vbCrLf
' Displays the values in the Eras property.
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 = 2001 To 2005
outputBlock.Text += String.Format(ControlChars.Tab + "{0}", myCal.GetDaysInMonth(y, 2, myCal.Eras(i)))
Next y
outputBlock.Text &= vbCrLf
Next i
End Sub
End Class
' This example produces the following output.
' YEAR 2001 2002 2003 2004 2005
' CurrentEra: 28 28 28 29 28
' Era 1: 28 28 28 29 28
using System;
using System.Globalization;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
// Creates and initializes a GregorianCalendar.
GregorianCalendar myCal = new GregorianCalendar();
// Displays the header.
outputBlock.Text += "YEAR\t";
for (int y = 2001; y <= 2005; y++)
outputBlock.Text += String.Format("\t{0}", y);
outputBlock.Text += "\n";
// Displays the value of the CurrentEra property.
outputBlock.Text += "CurrentEra:";
for (int y = 2001; y <= 2005; y++)
outputBlock.Text += String.Format("\t{0}", myCal.GetDaysInMonth(y, 2, GregorianCalendar.CurrentEra));
outputBlock.Text += "\n";
// Displays the values in the Eras property.
for (int i = 0; i < myCal.Eras.Length; i++)
{
outputBlock.Text += String.Format("Era {0}:\t", myCal.Eras[i]);
for (int y = 2001; y <= 2005; y++)
outputBlock.Text += String.Format("\t{0}", myCal.GetDaysInMonth(y, 2, myCal.Eras[i]));
outputBlock.Text += "\n";
}
}
}
/*
This code produces the following output.
YEAR 2001 2002 2003 2004 2005
CurrentEra: 28 28 28 29 28
Era 1: 28 28 28 29 28
*/
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.