This documentation is archived and is not being maintained.

CultureInfo Constructor (String, Boolean)

Initializes a new instance of the CultureInfo class based on the culture specified by name and on the Boolean that specifies whether to use the user-selected culture settings from the system.

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

public CultureInfo(
	string name,
	bool useUserOverride


Type: System.String
A predefined CultureInfo name, Name of an existing CultureInfo, or Windows-only culture name. name is not case-sensitive.
Type: System.Boolean
A Boolean that denotes whether to use the user-selected culture settings (true) or the default culture settings (false).


name is null.


name is not a valid culture name.

For a list of predefined culture names, see the National Language Support (NLS) API Reference at the Go Global Developer Center.

If name is String.Empty, the constructor creates an instance of the invariant culture; this is equivalent to retrieving the value of the InvariantCulture property.

The user might choose to override some of the values associated with the current Windows culture through the regional and language options portion of Control Panel. For example, the user might choose to display the date in a different format or to use a currency other than the default for the culture.

Applications should typically not disallow user overrides. Note that disallowing overrides does not itself guarantee data stability; see the blog entry "Culture data shouldn't be considered stable (except for Invariant)" (

If the UseUserOverride property is set to true and the culture identifier associated with the specified culture name matches the culture identifier of the current Windows culture, this constructor creates a CultureInfo that uses those overrides, including user settings for the properties of the DateTimeFormatInfo instance returned by the DateTimeFormat property, and the properties of the NumberFormatInfo instance returned by the NumberFormat property. If the user settings are incompatible with the culture associated with the CultureInfo, for example, if the selected calendar is not one of the OptionalCalendars, the results of the methods and the values of the properties are undefined.

Otherwise, this constructor creates a CultureInfo that uses the default values for the specified culture.

The value of the useUserOverride parameter becomes the value of the UseUserOverride property.

For example, suppose that Arabic (Saudi Arabia) is the current culture of Windows and the user changed the calendar from Hijri to Gregorian.

The LCID property of the new CultureInfo is set to the culture identifier associated with the specified name.

For cultures that use the euro, the .NET Framework and Windows XP set the default currency as euro. However, older versions of Windows do not do this. Therefore, if the user of an older version of Windows has not changed the currency setting through the regional and language options portion of Control Panel, the currency might be incorrect. To use the .NET Framework default setting for the currency, the application should set the useUserOverride parameter to false.

Notes to Callers

The .NET Framework version 3.5 and earlier versions throw an ArgumentException if name is not a valid culture name. Starting with the .NET Framework version 4, this constructor throws a CultureNotFoundException.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.