Calendar.GetDayOfWeek Method
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When overridden in a derived class, returns the day of the week in the specified DateTime.
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public MustOverride Function GetDayOfWeek ( _
time As DateTime _
) As DayOfWeek
public abstract DayOfWeek GetDayOfWeek(
DateTime time
)
Parameters
- time
Type: System.DateTime
The DateTime to read.
Return Value
Type: System.DayOfWeek
A DayOfWeek value that represents the day of the week in the time parameter.
Remarks
The DayOfWeek values are Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday.
Examples
The following code example demonstrates the members of the Calendar class.
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())
' Uses the default calendar of the InvariantCulture.
Dim myCal As Calendar = CultureInfo.InvariantCulture.Calendar
' Displays the values of the DateTime.
outputBlock.Text += String.Format("April 3, 2002 of the Gregorian calendar:") & vbCrLf
DisplayValues(outputBlock, myCal, myDT)
' Adds 5 to every component of the DateTime.
myDT = myCal.AddYears(myDT, 5)
myDT = myCal.AddMonths(myDT, 5)
myDT = myCal.AddWeeks(myDT, 5)
myDT = myCal.AddDays(myDT, 5)
myDT = myCal.AddHours(myDT, 5)
myDT = myCal.AddMinutes(myDT, 5)
myDT = myCal.AddSeconds(myDT, 5)
myDT = myCal.AddMilliseconds(myDT, 5)
' Displays the values of the DateTime.
outputBlock.Text &= "After adding 5 to each component of the DateTime:" & 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 += String.Format(" Hour: {0}", myCal.GetHour(myDT)) & vbCrLf
outputBlock.Text += String.Format(" Minute: {0}", myCal.GetMinute(myDT)) & vbCrLf
outputBlock.Text += String.Format(" Second: {0}", myCal.GetSecond(myDT)) & vbCrLf
outputBlock.Text += String.Format(" Milliseconds: {0}", myCal.GetMilliseconds(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
' Hour: 0
' Minute: 0
' Second: 0
' Milliseconds: 0
'
' After adding 5 to each component of the DateTime:
' Era: 1
' Year: 2007
' Month: 10
' DayOfYear: 286
' DayOfMonth: 13
' DayOfWeek: Saturday
' Hour: 5
' Minute: 5
' Second: 5
' Milliseconds: 5
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());
// Uses the default calendar of the InvariantCulture.
Calendar myCal = CultureInfo.InvariantCulture.Calendar;
// Displays the values of the DateTime.
outputBlock.Text += String.Format("April 3, 2002 of the Gregorian calendar:") + "\n";
DisplayValues(outputBlock, myCal, myDT);
// Adds 5 to every component of the DateTime.
myDT = myCal.AddYears(myDT, 5);
myDT = myCal.AddMonths(myDT, 5);
myDT = myCal.AddWeeks(myDT, 5);
myDT = myCal.AddDays(myDT, 5);
myDT = myCal.AddHours(myDT, 5);
myDT = myCal.AddMinutes(myDT, 5);
myDT = myCal.AddSeconds(myDT, 5);
myDT = myCal.AddMilliseconds(myDT, 5);
// Displays the values of the DateTime.
outputBlock.Text += "After adding 5 to each component of the DateTime:" + "\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 += String.Format(" Hour: {0}", myCal.GetHour(myDT)) + "\n";
outputBlock.Text += String.Format(" Minute: {0}", myCal.GetMinute(myDT)) + "\n";
outputBlock.Text += String.Format(" Second: {0}", myCal.GetSecond(myDT)) + "\n";
outputBlock.Text += String.Format(" Milliseconds: {0}", myCal.GetMilliseconds(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
Hour: 0
Minute: 0
Second: 0
Milliseconds: 0
After adding 5 to each component of the DateTime:
Era: 1
Year: 2007
Month: 10
DayOfYear: 286
DayOfMonth: 13
DayOfWeek: Saturday
Hour: 5
Minute: 5
Second: 5
Milliseconds: 5
*/
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.