Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Comparer Constructor
Collapse the table of content
Expand the table of content

Comparer.Comparer Constructor

Initializes a new instance of the Comparer class using the specified System.Globalization.CultureInfo.

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

public Comparer (
	CultureInfo culture
)
public Comparer (
	CultureInfo culture
)
public function Comparer (
	culture : CultureInfo
)
Not applicable.

Parameters

culture

The System.Globalization.CultureInfo to use for the new Comparer.

Exception typeCondition

ArgumentNullException

culture is a null reference (Nothing in Visual Basic).

Comparison procedures use the specified System.Globalization.CultureInfo to determine the sort order and casing rules. String comparisons might have different results depending on the culture. For more information on culture-specific comparisons, see the System.Globalization namespace and Encoding and Localization.

The following code example shows how Compare returns different values depending on the culture associated with the Comparer.

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


public class SamplesComparer  {

   public static void Main()  {

      // Creates the strings to compare.
      String str1 = "llegar";
      String str2 = "lugar";
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\" ...", str1, str2 );

      // Uses the DefaultInvariant Comparer.
      Console.WriteLine( "   Invariant Comparer: {0}", Comparer.DefaultInvariant.Compare( str1, str2 ) );

      // Uses the Comparer based on the culture "es-ES" (Spanish - Spain, international sort).
      Comparer myCompIntl = new Comparer( new CultureInfo( "es-ES", false ) );
      Console.WriteLine( "   International Sort: {0}", myCompIntl.Compare( str1, str2 ) );

      // Uses the Comparer based on the culture identifier 0x040A (Spanish - Spain, traditional sort).
      Comparer myCompTrad = new Comparer( new CultureInfo( 0x040A, false ) );
      Console.WriteLine( "   Traditional Sort  : {0}", myCompTrad.Compare( str1, str2 ) );

   }

}

/*
This code produces the following output.

Comparing "llegar" and "lugar" ...
   Invariant Comparer: -1
   International Sort: -1
   Traditional Sort  : 1

*/

import System.* ;
import System.Collections.*;
import System.Globalization.*;

public class SamplesComparer
{
    public static void main(String[] args)
    {
        // Creates the strings to compare.
        String str1 = "llegar";
        String str2 = "lugar";
        Console.WriteLine("Comparing \"{0}\" and \"{1}\" ...", str1, str2);
      
        // Uses the DefaultInvariant Comparer.
        Console.WriteLine("   Invariant Comparer: {0}", 
            (Int32)Comparer.DefaultInvariant.Compare(str1, str2));

        // Uses the Comparer based on the culture "es-ES" (Spanish - Spain, 
        // international sort).
        Comparer myCompIntl = new Comparer(new CultureInfo("es-ES", false));
        Console.WriteLine("   International Sort: {0}", 
            (Int32)myCompIntl.Compare(str1, str2));

        // Uses the Comparer based on the culture identifier 0x040A 
        // (Spanish - Spain, traditional sort).
        Comparer myCompTrad = new Comparer(new CultureInfo(0x40A, false));
        Console.WriteLine("   Traditional Sort  : {0}",
            (Int32)myCompTrad.Compare(str1, str2));
    } //main
} //SamplesComparer

/*
This code produces the following output.

Comparing "llegar" and "lugar" ...
   Invariant Comparer: -1
   International Sort: -1
   Traditional Sort  : 1

*/

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

Community Additions

ADD
Show:
© 2015 Microsoft