Question

Explain the purpose of CultureInfo class. What namespace contains it?

Answer 1

Provides information about a specific culture (called a locale for unmanaged code development). The information includes the names for the culture, the writing system, the calendar used, the sort order of strings, and
for dates and numbers. Examples
The following example shows how to create a CultureInfo object for Spanish (Spain) with the international sort and another CultureInfo object with the traditional sort.

C#

Copy
using System;
using System.Collections;
using System.Globalization;

public class SamplesCultureInfo
{

public static void Main()
{

// Creates and initializes the CultureInfo which uses the international sort.
CultureInfo myCIintl = new CultureInfo("es-ES", false);

// Creates and initializes the CultureInfo which uses the traditional sort.
CultureInfo myCItrad = new CultureInfo(0x040A, false);

// Displays the properties of each culture.
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "PROPERTY", "INTERNATIONAL", "TRADITIONAL");
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "CompareInfo", myCIintl.CompareInfo, myCItrad.CompareInfo);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "DisplayName", myCIintl.DisplayName, myCItrad.DisplayName);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "EnglishName", myCIintl.EnglishName, myCItrad.EnglishName);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "IsNeutralCulture", myCIintl.IsNeutralCulture, myCItrad.IsNeutralCulture);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "IsReadOnly", myCIintl.IsReadOnly, myCItrad.IsReadOnly);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "LCID", myCIintl.LCID, myCItrad.LCID);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "Name", myCIintl.Name, myCItrad.Name);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "NativeName", myCIintl.NativeName, myCItrad.NativeName);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "Parent", myCIintl.Parent, myCItrad.Parent);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "TextInfo", myCIintl.TextInfo, myCItrad.TextInfo);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "ThreeLetterISOLanguageName", myCIintl.ThreeLetterISOLanguageName, myCItrad.ThreeLetterISOLanguageName);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "ThreeLetterWindowsLanguageName", myCIintl.ThreeLetterWindowsLanguageName, myCItrad.ThreeLetterWindowsLanguageName);
Console.WriteLine("{0,-31}{1,-47}{2,-25}", "TwoLetterISOLanguageName", myCIintl.TwoLetterISOLanguageName, myCItrad.TwoLetterISOLanguageName);
Console.WriteLine();

// Compare two strings using myCIintl.
Console.WriteLine("Comparing \"llegar\" and \"lugar\"");
Console.WriteLine(" With myCIintl.CompareInfo.Compare: {0}", myCIintl.CompareInfo.Compare("llegar", "lugar"));
Console.WriteLine(" With myCItrad.CompareInfo.Compare: {0}", myCItrad.CompareInfo.Compare("llegar", "lugar"));

}

}

/*
This code produces the following output.

PROPERTY INTERNATIONAL TRADITIONAL
CompareInfo CompareInfo - es-ES CompareInfo - es-ES_tradnl
DisplayName Spanish (Spain) Spanish (Spain)
EnglishName Spanish (Spain, International Sort) Spanish (Spain, Traditional Sort)
IsNeutralCulture False False
IsReadOnly False False
LCID 3082 1034
Name es-ES es-ES
NativeName Español (España, alfabetización internacional) Español (España, alfabetización tradicional)
Parent es es
TextInfo TextInfo - es-ES TextInfo - es-ES_tradnl
ThreeLetterISOLanguageName spa spa
ThreeLetterWindowsLanguageName ESN ESP
TwoLetterISOLanguageName es es

Comparing "llegar" and "lugar"
With myCIintl.CompareInfo.Compare: -1
With myCItrad.CompareInfo.Compare: 1

*/
Remarks
The CultureInfo class provides culture-specific information, such as the language, sublanguage, country/region, calendar, and conventions associated with a particular culture. This class also provides access to culture-specific instances of the DateTimeFormatInfo, NumberFormatInfo, CompareInfo, and TextInfo objects. These objects contain the information required for culture-specific operations, such as casing, formatting dates and numbers, and comparing strings. The CultureInfo class is used either directly or indirectly by classes that format, parse, or manipulate culture-specific data, such as String, DateTime, DateTimeOffset, and the numeric types.