DateTimeFormatInfo::YearMonthPattern Property

Gets or sets the custom format string for a year and month value.

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

public:
property String^ YearMonthPattern {
	String^ get ();
	void set (String^ value);
}

Property Value

Type: System::String
The custom format string for a year and month value.

ExceptionCondition
ArgumentNullException

The property is being set to nullptr.

InvalidOperationException

The property is being set and the DateTimeFormatInfo object is read-only.

The YearMonthPattern property defines the culture-specific format of date strings that are returned by calls to the DateTime::ToString and DateTimeOffset::ToString methods and by composite format strings that are supplied the "y" and "Y" standard format strings.

This property is affected if the value of the Calendar property changes.

We recommend that you set the date separator in the year month pattern to an exact string instead of using the date separator placeholder. For example, to get the pattern MM-yyyy, set the year month pattern to "MM-yyyy".

The following example displays the value of YearMonthPattern for a few cultures.

using namespace System;
using namespace System::Globalization;
void PrintPattern( String^ myCulture )
{
   CultureInfo^ MyCI = gcnew CultureInfo( myCulture,false );
   DateTimeFormatInfo^ myDTFI = MyCI->DateTimeFormat;
   Console::WriteLine( " {0} {1}", myCulture, myDTFI->YearMonthPattern );
}

int main()
{

   // Displays the values of the pattern properties.
   Console::WriteLine( " CULTURE    PROPERTY VALUE" );
   PrintPattern( "en-US" );
   PrintPattern( "ja-JP" );
   PrintPattern( "fr-FR" );
}

/*
This code produces the following output.  The question marks take the place of native script characters.

CULTURE    PROPERTY VALUE
en-US     MMMM, yyyy
ja-JP     yyyy'?'M'?'
fr-FR     MMMM yyyy

*/

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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