Comparer Classe

Définition

public ref class Comparer sealed : System::Collections::IComparer

public ref class Comparer sealed : System::Collections::IComparer, System::Runtime::Serialization::ISerializable

public sealed class Comparer : System.Collections.IComparer

public sealed class Comparer : System.Collections.IComparer, System.Runtime.Serialization.ISerializable

[System.Serializable]
public sealed class Comparer : System.Collections.IComparer, System.Runtime.Serialization.ISerializable

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class Comparer : System.Collections.IComparer, System.Runtime.Serialization.ISerializable

type Comparer = class
    interface IComparer

type Comparer = class
    interface IComparer
    interface ISerializable

[<System.Serializable>]
type Comparer = class
    interface IComparer
    interface ISerializable

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type Comparer = class
    interface IComparer
    interface ISerializable

Public NotInheritable Class Comparer
Implements IComparer

Public NotInheritable Class Comparer
Implements IComparer, ISerializable

Héritage

Object

Comparer

Attributs

SerializableAttribute ComVisibleAttribute

Implémente

IComparer ISerializable

Exemples

L’exemple de code suivant montre comment Compare retourne différentes valeurs en fonction de la culture associée à .Comparer

using namespace System;
using namespace System::Collections;
using namespace System::Globalization;
int 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 = gcnew Comparer( gcnew 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 = gcnew Comparer( gcnew 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

*/

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

*/

Imports System.Collections
Imports System.Globalization

Public Class SamplesComparer

   Public Shared Sub Main()

      ' Creates the strings to compare.
      Dim str1 As [String] = "llegar"
      Dim str2 As [String] = "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).
      Dim myCompIntl As 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).
      Dim myCompTrad As New Comparer(New CultureInfo(&H40A, False))
      Console.WriteLine("   Traditional Sort  : {0}", myCompTrad.Compare(str1, str2))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "llegar" and "lugar" ...
'   Invariant Comparer: -1
'   International Sort: -1
'   Traditional Sort  : 1

Remarques

Cette classe est l’implémentation par défaut de l’interface IComparer . La CaseInsensitiveComparer classe est l’implémentation de l’interface IComparer qui effectue des comparaisons de chaînes sans respect de la casse. System.Collections.Generic.Comparer<T> est l’équivalent générique de cette classe.

Les procédures de comparaison utilisent le Thread.CurrentCulture du thread actif, sauf indication contraire. Les comparaisons de chaînes peuvent avoir des résultats différents en fonction de la culture. Pour plus d’informations sur les comparaisons spécifiques à la culture, consultez l’espace System.Globalization de noms et Globalisation et Localisation.

Constructeurs

Champs

Méthodes

S’applique à

Voir aussi

• IComparer
• IComparable
• CaseInsensitiveComparer
• Comparer<T>
• CompareInfo
• CurrentCulture
• CultureInfo