UnicodeEncoding.Equals(Object) Método

  • Referencia

Definición

Espacio de nombres:
System.Text
Ensamblado:
System.Text.Encoding.Extensions.dll
Ensamblado:
mscorlib.dll
Ensamblado:
netstandard.dll

Determina si el objeto Object especificado es igual al objeto UnicodeEncoding actual.

public:
 override bool Equals(System::Object ^ value);
public override bool Equals (object value);
public override bool Equals (object? value);
override this.Equals : obj -> bool
Public Overrides Function Equals (value As Object) As Boolean

Parámetros

value
Object

Objeto que se va a comparar con el objeto actual.

Devoluciones

Boolean

true si value es una instancia de UnicodeEncoding y es igual al objeto actual; en caso contrario, false.

Ejemplos

En el ejemplo siguiente se muestra cómo usar el Equals método para probar si el objeto actual UnicodeEncoding es igual a otro UnicodeEncoding objeto. Se crean y comparan cinco UnicodeEncoding objetos y se muestran los resultados de las comparaciones.

using namespace System;
using namespace System::Text;
void DescribeEquivalence( Boolean isEquivalent )
{
   Console::WriteLine( " {0} equivalent encoding.", (isEquivalent ? (String^)"An" : "Not an") );
}

int main()
{
   
   // Create a UnicodeEncoding without parameters.
   UnicodeEncoding^ unicode = gcnew UnicodeEncoding;
   
   // Create a UnicodeEncoding to support little-endian Byte ordering
   // and include the Unicode Byte order mark.
   UnicodeEncoding^ unicodeLittleEndianBOM = gcnew UnicodeEncoding( false,true );
   
   // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
   DescribeEquivalence( unicode->Equals( unicodeLittleEndianBOM ) );
   
   // Create a UnicodeEncoding to support little-endian Byte ordering
   // and not include the Unicode Byte order mark.
   UnicodeEncoding^ unicodeLittleEndianNoBOM = gcnew UnicodeEncoding( false,false );
   
   // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
   DescribeEquivalence( unicode->Equals( unicodeLittleEndianNoBOM ) );
   
   // Create a UnicodeEncoding to support big-endian Byte ordering
   // and include the Unicode Byte order mark.
   UnicodeEncoding^ unicodeBigEndianBOM = gcnew UnicodeEncoding( true,true );
   
   // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
   DescribeEquivalence( unicode->Equals( unicodeBigEndianBOM ) );
   
   // Create a UnicodeEncoding to support big-endian Byte ordering
   // and not include the Unicode Byte order mark.
   UnicodeEncoding^ unicodeBigEndianNoBOM = gcnew UnicodeEncoding( true,false );
   
   // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
   DescribeEquivalence( unicode->Equals( unicodeBigEndianNoBOM ) );
}

using System;
using System.Text;

class UnicodeEncodingExample {
    public static void Main() {

        // Create a UnicodeEncoding without parameters.
        UnicodeEncoding unicode = new UnicodeEncoding();

        // Create a UnicodeEncoding to support little-endian byte ordering
        // and include the Unicode byte order mark.
        UnicodeEncoding unicodeLittleEndianBOM = 
            new UnicodeEncoding(false, true);
        // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicode.Equals(unicodeLittleEndianBOM));

        // Create a UnicodeEncoding to support little-endian byte ordering
        // and not include the Unicode byte order mark.
        UnicodeEncoding unicodeLittleEndianNoBOM =
            new UnicodeEncoding(false, false);
        // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicode.Equals(unicodeLittleEndianNoBOM));

        // Create a UnicodeEncoding to support big-endian byte ordering
        // and include the Unicode byte order mark.
        UnicodeEncoding unicodeBigEndianBOM =
            new UnicodeEncoding(true, true);
        // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicode.Equals(unicodeBigEndianBOM));

        // Create a UnicodeEncoding to support big-endian byte ordering
        // and not include the Unicode byte order mark.
        UnicodeEncoding unicodeBigEndianNoBOM =
            new UnicodeEncoding(true, false);
        // Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicode.Equals(unicodeBigEndianNoBOM));
    }

    public static void DescribeEquivalence(Boolean isEquivalent) {
        Console.WriteLine(
            "{0} equivalent encoding.", (isEquivalent ? "An" : "Not an")
        );
    }
}

Imports System.Text

Class UnicodeEncodingExample
    
    Public Shared Sub Main()

        ' Create a UnicodeEncoding without parameters.
        Dim unicodeDefault As New UnicodeEncoding()

        ' Create a UnicodeEncoding to support little-endian byte ordering
        ' and include the Unicode byte order mark.        
        Dim unicodeLittleEndianBOM As New UnicodeEncoding(False, True)
        ' Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicodeDefault.Equals(unicodeLittleEndianBOM))
        
        ' Create a UnicodeEncoding to support little-endian byte ordering
        ' and not include the Unicode byte order mark.
        Dim unicodeLittleEndianNoBOM As New UnicodeEncoding(False, False)
        ' Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicodeDefault.Equals(unicodeLittleEndianNoBOM))
        
        ' Create a UnicodeEncoding to support big-endian byte ordering
        ' and include the Unicode byte order mark.
        Dim unicodeBigEndianBOM As New UnicodeEncoding(True, True)
        ' Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicodeDefault.Equals(unicodeBigEndianBOM))
        
        ' Create a UnicodeEncoding to support big-endian byte ordering
        ' and not include the Unicode byte order mark.
        Dim unicodeBigEndianNoBOM As New UnicodeEncoding(True, False)
        ' Compare this UnicodeEncoding to the UnicodeEncoding without parameters.
        DescribeEquivalence(unicodeDefault.Equals(unicodeBigEndianNoBOM))
    End Sub
    
    
    Public Shared Sub DescribeEquivalence(isEquivalent As Boolean)
        Dim phrase as String
        If isEquivalent Then
            phrase = "An"
        Else
            phrase = "Not an"
        End If
        Console.WriteLine("{0} equivalent encoding.", phrase)
    End Sub
End Class

Comentarios

Dos UnicodeEncoding objetos se consideran iguales si se cumplen todas las condiciones siguientes:

  • Ambos objetos usan el mismo orden de bytes (little-endian o big-endian).

  • Ambos objetos proporcionan la marca de orden de bytes o ambas no.

  • Ambos objetos usan la misma reserva del codificador.

  • Ambos objetos usan la misma reserva de descodificador.

Se aplica a

Consulte también