JapaneseCalendar::AddMonths Method
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Parameters
- time
- Type: System::DateTime
The DateTime to which to add months.
- months
- Type: System::Int32
The number of months to add.
Return Value
Type: System::DateTimeThe DateTime that results from adding the specified number of months to the specified DateTime.
| Exception | Condition |
|---|---|
| ArgumentException | The resulting DateTime is outside the supported range. |
| ArgumentOutOfRangeException | months is less than -120000. -or- months is greater than 120000. |
The day part of the resulting DateTime is affected if the resulting day is not a valid day in the resulting month of the resulting year. It is changed to the last valid day in the resulting month of the resulting year. 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 time-of-day part of the resulting DateTime remains the same as the specified DateTime.
For example, if the specified month is Juugatsu (October), which has 31 days, the specified day is the 31st day of that month, and months is 6, the resulting year is one more than the specified year, the resulting month is Shigatsu (April), and the resulting day is the 30th day, which is the last day in Shigatsu (April).
If months is negative, the resulting DateTime is earlier than the specified DateTime.
The Kind property of the returned DateTime value always equals DateTimeKind::Unspecified. You can preserve the Kind property of the time parameter by calling the DateTime::SpecifyKind method, as the following example shows.
The following code example displays the values of several components of a DateTime in terms of the Japanese calendar.
using namespace System; using namespace System::Globalization; 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(); } int main() { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = DateTime(2002,4,3,gcnew GregorianCalendar); // Creates an instance of the JapaneseCalendar. JapaneseCalendar^ myCal = gcnew JapaneseCalendar; // Displays the values of the DateTime. Console::WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:" ); DisplayValues( myCal, myDT ); // Adds two years and ten months. myDT = myCal->AddYears( myDT, 2 ); myDT = myCal->AddMonths( myDT, 10 ); // Displays the values of the DateTime. Console::WriteLine( "After adding two years and ten months:" ); DisplayValues( myCal, myDT ); } /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.