String.Inequality(String, String) String.Inequality(String, String) String.Inequality(String, String) String.Inequality(String, String) Operator

Definition

Bestimmt, ob zwei angegebene Zeichenfolgen verschiedene Werte haben.Determines whether two specified strings have different values.

public:
 static bool operator !=(System::String ^ a, System::String ^ b);
public static bool operator != (string a, string b);
static member op_Inequality : string * string -> bool
Public Shared Operator != (a As String, b As String) As Boolean

Parameter

a
String String String String

Die erste Zeichenfolge für den Vergleich oder null.The first string to compare, or null.

b
String String String String

Die zweite Zeichenfolge für den Vergleich oder null.The second string to compare, or null.

Gibt zurück

true, wenn der Wert von a vom Wert von b verschieden ist; andernfalls false.true if the value of a is different from the value of b; otherwise, false.

Beispiele

Das folgende Beispiel zeigt den Inequality-Operator.The following example demonstrates the inequality operator.

// Example for the String Inequality operator.
using namespace System;
void CompareAndDisplay( String^ Comparand )
{
   String^ Lower = "abcd";
   Console::WriteLine( "\"{0}\" != \"{1}\" ?  {2}", Lower, Comparand, Lower != Comparand );
}

int main()
{
   Console::WriteLine( "This example of the String Inequality operator\n"
   "generates the following output.\n" );
   CompareAndDisplay( "ijkl" );
   CompareAndDisplay( "ABCD" );
   CompareAndDisplay( "abcd" );
}

/*
This example of the String Inequality operator
generates the following output.

"abcd" != "ijkl" ?  True
"abcd" != "ABCD" ?  True
"abcd" != "abcd" ?  False
*/
// Example for the String Inequality operator.
using System;

class InequalityOp 
{
    public static void Main() 
    {
        Console.WriteLine( 
            "This example of the String Inequality operator\n" +
            "generates the following output.\n" );

        CompareAndDisplay( "ijkl" );
        CompareAndDisplay( "ABCD" );
        CompareAndDisplay( "abcd" );
    }

    static void CompareAndDisplay( String Comparand )
    {
        String  Lower = "abcd";

        Console.WriteLine( 
            "\"{0}\" != \"{1}\" ?  {2}",
            Lower, Comparand, Lower != Comparand );
    }
}

/*
This example of the String Inequality operator
generates the following output.

"abcd" != "ijkl" ?  True
"abcd" != "ABCD" ?  True
"abcd" != "abcd" ?  False
*/

Hinweise

Die Inequality Methode definiert, den Vorgang des Ungleichheitsoperators für die String Klasse.The Inequality method defines the operation of the inequality operator for the String class. Sie können Code wie im Abschnitt "Beispiele".It enables code such as that shown in the Examples section.

Die Inequality Operator ruft wiederum die statische Equals(String, String) Methode, die einen Ordinalvergleich der (Groß-/Kleinschreibung beachtet und kulturunabhängige) ausführt.The Inequality operator in turn calls the static Equals(String, String) method, which performs an ordinal (case-sensitive and culture-insensitive) comparison.

Hinweis

Visual Basic-Compiler löst den Inequality-Operator nicht als Aufruf an die Inequality Methode.The Visual Basic compiler does not resolve the inequality operator as a call to the Inequality method. Stattdessen der Inequality-Operator umschließt einen Aufruf der Operators.CompareString Methode.Instead, the inequality operator wraps a call to the Operators.CompareString method.

Gilt für: