UTF8Encoding.Equals(Object) Método

Definição

Namespace:

System.Text

Assembly:

System.Text.Encoding.Extensions.dll

Origem:

UTF8Encoding.cs

Determina se o objeto especificado é igual ao objeto UTF8Encoding atual.

public:
 override bool Equals(System::Object ^ value);

public override bool Equals (object? value);

override this.Equals : obj -> bool

Public Overrides Function Equals (value As Object) As Boolean

Parâmetros

value

Object

O objeto a ser comparado com a instância atual.

Retornos

Boolean

true se value for uma instância de UTF8Encoding e for igual ao objeto atual, caso contrário, false.

Exemplos

O exemplo a seguir usa o Equals método para testar se o objeto atual UTF8Encoding é igual a um objeto diferente UTF8Encoding . Quatro UTF8Encoding objetos são criados e comparados e os resultados das comparações são exibidos.

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

int main()
{
   UTF8Encoding^ utf8 = gcnew UTF8Encoding;
   UTF8Encoding^ utf8true = gcnew UTF8Encoding( true );
   UTF8Encoding^ utf8truetrue = gcnew UTF8Encoding( true,true );
   UTF8Encoding^ utf8falsetrue = gcnew UTF8Encoding( false,true );
   DescribeEquivalence( utf8->Equals( utf8 ) );
   DescribeEquivalence( utf8->Equals( utf8true ) );
   DescribeEquivalence( utf8->Equals( utf8truetrue ) );
   DescribeEquivalence( utf8->Equals( utf8falsetrue ) );
   DescribeEquivalence( utf8true->Equals( utf8 ) );
   DescribeEquivalence( utf8true->Equals( utf8true ) );
   DescribeEquivalence( utf8true->Equals( utf8truetrue ) );
   DescribeEquivalence( utf8true->Equals( utf8falsetrue ) );
   DescribeEquivalence( utf8truetrue->Equals( utf8 ) );
   DescribeEquivalence( utf8truetrue->Equals( utf8true ) );
   DescribeEquivalence( utf8truetrue->Equals( utf8truetrue ) );
   DescribeEquivalence( utf8truetrue->Equals( utf8falsetrue ) );
   DescribeEquivalence( utf8falsetrue->Equals( utf8 ) );
   DescribeEquivalence( utf8falsetrue->Equals( utf8true ) );
   DescribeEquivalence( utf8falsetrue->Equals( utf8truetrue ) );
   DescribeEquivalence( utf8falsetrue->Equals( utf8falsetrue ) );
}

using System;
using System.Text;

class UTF8EncodingExample {
    public static void Main() {
        UTF8Encoding utf8 = new UTF8Encoding();
        UTF8Encoding utf8true = new UTF8Encoding(true);
        UTF8Encoding utf8truetrue = new UTF8Encoding(true, true);
        UTF8Encoding utf8falsetrue = new UTF8Encoding(false, true);
        
        DescribeEquivalence(utf8.Equals(utf8));
        DescribeEquivalence(utf8.Equals(utf8true));
        DescribeEquivalence(utf8.Equals(utf8truetrue));
        DescribeEquivalence(utf8.Equals(utf8falsetrue));
        
        DescribeEquivalence(utf8true.Equals(utf8));
        DescribeEquivalence(utf8true.Equals(utf8true));
        DescribeEquivalence(utf8true.Equals(utf8truetrue));
        DescribeEquivalence(utf8true.Equals(utf8falsetrue));
        
        DescribeEquivalence(utf8truetrue.Equals(utf8));
        DescribeEquivalence(utf8truetrue.Equals(utf8true));
        DescribeEquivalence(utf8truetrue.Equals(utf8truetrue));
        DescribeEquivalence(utf8truetrue.Equals(utf8falsetrue));
        
        DescribeEquivalence(utf8falsetrue.Equals(utf8));
        DescribeEquivalence(utf8falsetrue.Equals(utf8true));
        DescribeEquivalence(utf8falsetrue.Equals(utf8truetrue));
        DescribeEquivalence(utf8falsetrue.Equals(utf8falsetrue));
    }

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

Imports System.Text

Class UTF8EncodingExample
    
    Public Shared Sub Main()
        Dim utf8 As New UTF8Encoding()
        Dim utf8true As New UTF8Encoding(True)
        Dim utf8truetrue As New UTF8Encoding(True, True)
        Dim utf8falsetrue As New UTF8Encoding(False, True)
        
        DescribeEquivalence(utf8.Equals(utf8))
        DescribeEquivalence(utf8.Equals(utf8true))
        DescribeEquivalence(utf8.Equals(utf8truetrue))
        DescribeEquivalence(utf8.Equals(utf8falsetrue))
        
        DescribeEquivalence(utf8true.Equals(utf8))
        DescribeEquivalence(utf8true.Equals(utf8true))
        DescribeEquivalence(utf8true.Equals(utf8truetrue))
        DescribeEquivalence(utf8true.Equals(utf8falsetrue))
        
        DescribeEquivalence(utf8truetrue.Equals(utf8))
        DescribeEquivalence(utf8truetrue.Equals(utf8true))
        DescribeEquivalence(utf8truetrue.Equals(utf8truetrue))
        DescribeEquivalence(utf8truetrue.Equals(utf8falsetrue))
        
        DescribeEquivalence(utf8falsetrue.Equals(utf8))
        DescribeEquivalence(utf8falsetrue.Equals(utf8true))
        DescribeEquivalence(utf8falsetrue.Equals(utf8truetrue))
        DescribeEquivalence(utf8falsetrue.Equals(utf8falsetrue))
    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

Comentários

Dois UTF8Encoding objetos serão considerados iguais se todas as seguintes condições forem verdadeiras:

• Ambos os objetos fornecem a marca de pedido de byte ou ambos não.

• Ambos os objetos usam o mesmo fallback do codificador.

• Ambos os objetos usam o mesmo fallback de decodificador.

Confira também

• UTF8Encoding()
• Equals(Object)