System.CultureInfo Class (msdn)

Overview

The System.Globalization.CultureInfo class provides information about a specific culture (language, sublanguage, country/region, calendar, and cultural conventions).

It is commonly used for formatting dates, times, numbers, and strings according to culture-specific rules.

Properties

Name	Type	Description
`Name`	string	The culture name in format languagecode2-country/regioncode2 (e.g., "en-US").
`DisplayName`	string	The culture name in the language of the localized version of .NET.
`TwoLetterISOLanguageName`	string	ISO 639-1 two-letter code for the language (e.g., "en").
`ThreeLetterISOLanguageName`	string	ISO 639-2 three-letter code for the language (e.g., "eng").
`NumberFormat`	NumberFormatInfo	Provides numeric formatting information.
`DateTimeFormat`	DateTimeFormatInfo	Provides date and time formatting information.
`TextInfo`	TextInfo	Provides information about text case conversion.
`CompareInfo`	CompareInfo	Provides string comparison and sorting information.
`IsReadOnly`	bool	Indicates whether the culture is read-only.
`LCID`	int	Locale identifier for the culture.

Methods

Name	Signature	Description
`GetCultureInfo`	static CultureInfo GetCultureInfo(string name)	Returns a read-only `CultureInfo` object for the specified culture name.
`CreateSpecificCulture`	static CultureInfo CreateSpecificCulture(string name)	Creates a specific culture that is associated with a neutral culture.
`Clone`	object Clone()	Creates a writable copy of the current `CultureInfo` object.
`Equals`	override bool Equals(object value)	Determines whether two `CultureInfo` instances are equal.
`GetHashCode`	override int GetHashCode()	Gets a hash code for the current `CultureInfo` object.
`ToString`	override string ToString()	Returns the culture name.

Examples

Formatting a number according to French culture:

using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        var french = new CultureInfo("fr-FR");
        double value = 12345.67;
        Console.WriteLine(value.ToString("N", french));
    }
}

Parsing a date string with invariant culture:

using System;
using System.Globalization;

class Demo
{
    static void Main()
    {
        string dateString = "2023-12-15";
        DateTime date = DateTime.ParseExact(dateString, "yyyy-MM-dd", CultureInfo.InvariantCulture);
        Console.WriteLine(date.ToString("D"));
    }
}