Calendar.AddHours Method
.NET Framework 3.0
Returns a DateTime that is the specified number of hours away from the specified DateTime.
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Assembly: mscorlib (in mscorlib.dll)
public DateTime AddHours ( DateTime time, int hours )
public function AddHours ( time : DateTime, hours : int ) : DateTime
Not applicable.
Parameters
- time
The DateTime to which to add hours.
- hours
The number of hours to add.
Return Value
The DateTime that results from adding the specified number of hours to the specified DateTime.The hours value is added to the specified DateTime. If hours is negative, the resulting DateTime is earlier than the specified DateTime.
The day part of the resulting DateTime is affected if the resulting time is outside the day of the specified DateTime. The month part of the resulting DateTime is affected if the resulting day is outside the month of the specified DateTime. The year part of the resulting DateTime is affected if the resulting month is outside the year of the specified DateTime. The era part of the resulting DateTime is affected if the resulting year is outside the era of the specified DateTime.
The following code example demonstrates the members of the Calendar class.
using System; using System.Globalization; public class SamplesCalendar { public static void Main() { // 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. Console.WriteLine( "April 3, 2002 of the Gregorian calendar:" ); DisplayValues( 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. Console.WriteLine( "After adding 5 to each component of the DateTime:" ); DisplayValues( myCal, myDT ); } public static void DisplayValues( Calendar myCal, DateTime myDT ) { Console.WriteLine( " Era: {0}", myCal.GetEra( myDT ) ); Console.WriteLine( " Year: {0}", myCal.GetYear( myDT ) ); Console.WriteLine( " Month: {0}", myCal.GetMonth( myDT ) ); Console.WriteLine( " DayOfYear: {0}", myCal.GetDayOfYear( myDT ) ); Console.WriteLine( " DayOfMonth: {0}", myCal.GetDayOfMonth( myDT ) ); Console.WriteLine( " DayOfWeek: {0}", myCal.GetDayOfWeek( myDT ) ); Console.WriteLine( " Hour: {0}", myCal.GetHour( myDT ) ); Console.WriteLine( " Minute: {0}", myCal.GetMinute( myDT ) ); Console.WriteLine( " Second: {0}", myCal.GetSecond( myDT ) ); Console.WriteLine( " Milliseconds: {0}", myCal.GetMilliseconds( myDT ) ); Console.WriteLine(); } } /* 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 */
import System.* ;
import System.Globalization.* ;
public class SamplesCalendar
{
public static void main(String[] args)
{
// 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.get_InvariantCulture().get_Calendar();
// Displays the values of the DateTime.
Console.WriteLine("April 3, 2002 of the Gregorian calendar:");
DisplayValues(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.
Console.WriteLine("After adding 5 to each component of the DateTime:");
DisplayValues(myCal, myDT);
} //main
public static void DisplayValues(Calendar myCal, DateTime myDT)
{
Console.WriteLine(" Era: {0}",
System.Convert.ToString(myCal.GetEra(myDT)));
Console.WriteLine(" Year: {0}",
System.Convert.ToString(myCal.GetYear(myDT)));
Console.WriteLine(" Month: {0}",
System.Convert.ToString(myCal.GetMonth(myDT)));
Console.WriteLine(" DayOfYear: {0}",
System.Convert.ToString(myCal.GetDayOfYear(myDT)));
Console.WriteLine(" DayOfMonth: {0}",
System.Convert.ToString(myCal.GetDayOfMonth(myDT)));
Console.WriteLine(" DayOfWeek: {0}",
System.Convert.ToString(myCal.GetDayOfWeek(myDT)));
Console.WriteLine(" Hour: {0}",
System.Convert.ToString(myCal.GetHour(myDT)));
Console.WriteLine(" Minute: {0}",
System.Convert.ToString(myCal.GetMinute(myDT)));
Console.WriteLine(" Second: {0}",
System.Convert.ToString(myCal.GetSecond(myDT)));
Console.WriteLine(" Milliseconds: {0}",
System.Convert.ToString(myCal.GetMilliseconds(myDT)));
Console.WriteLine();
} //DisplayValues
} //SamplesCalendar
/*
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
*/
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.