This documentation is archived and is not being maintained.

DateTimeFormatInfo.MonthNames Property

Gets or sets a one-dimensional array of type String containing the culture-specific full names of the months.

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

property array<String^>^ MonthNames {
	array<String^>^ get ();
	void set (array<String^>^ value);
/** @property */
public String[] get_MonthNames ()

/** @property */
public void set_MonthNames (String[] value)

public function get MonthNames () : String[]

public function set MonthNames (value : String[])

Property Value

A one-dimensional array of type String containing the culture-specific full names of the months. In a 12-month calendar, the 13th element of the array is an empty string. The array for InvariantInfo contains "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December", and "".

Exception typeCondition


The property is being set to a null reference (Nothing in Visual Basic).


The property is being set to an array that is multidimensional or whose length is not exactly 13.


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

If setting this property, the array must be one-dimensional and must have exactly 13 elements. Calendar objects accommodate calendars with 13 months.

If the custom pattern includes the format pattern "MMMM", DateTime.ToString displays the value of MonthNames in place of the "MMMM" in the format pattern.

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

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0