Decimal.Equals Méthode

  • Référence

Définition

Espace de noms:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Retourne une valeur indiquant si deux instances de Decimal représentent la même valeur.

Surcharges

Equals(Decimal, Decimal)

Retourne une valeur indiquant si deux instances spécifiées de Decimal représentent la même valeur.
Equals(Object)

Retourne une valeur indiquant si cette instance et un Object spécifié représentent le même type et la même valeur.
Equals(Decimal)

Retourne une valeur indiquant si cette instance et un objet Decimal spécifié représentent la même valeur.

Equals(Decimal, Decimal)

Source:
Decimal.cs
Source:
Decimal.cs
Source:
Decimal.cs

Retourne une valeur indiquant si deux instances spécifiées de Decimal représentent la même valeur.

public:
 static bool Equals(System::Decimal d1, System::Decimal d2);
public static bool Equals (decimal d1, decimal d2);
static member Equals : decimal * decimal -> bool
Public Shared Function Equals (d1 As Decimal, d2 As Decimal) As Boolean

Paramètres

d1
Decimal

Première valeur à comparer.

d2
Decimal

Deuxième valeur à comparer.

Retours

Boolean

true si d1 et d2 sont égales ; sinon, false.

Exemples

L’exemple de code suivant compare plusieurs Decimal valeurs à une valeur de référence Decimal à l’aide de la méthode statique Equals .

// Example of the Decimal::Compare and static Decimal::Equals methods.
using namespace System;
const __wchar_t * protoFmt = L"{0,-45}{1}";

// Compare Decimal parameters, and display them with the results.
void CompareDecimals( Decimal Left, Decimal Right, String^ RightText )
{
   String^ dataFmt = gcnew String( protoFmt );
   Console::WriteLine();
   Console::WriteLine( dataFmt, String::Concat( "Right: ", RightText ), Right );
   Console::WriteLine( dataFmt, "Decimal::Equals( Left, Right )", Decimal::Equals( Left, Right ) );
   Console::WriteLine( dataFmt, "Decimal::Compare( Left, Right )", Decimal::Compare( Left, Right ) );
}

int main()
{
   Console::WriteLine( "This example of the Decimal::Equals( Decimal, Decimal "
   ") and \nDecimal::Compare( Decimal, Decimal ) "
   "methods generates the \nfollowing output. It creates "
   "several different Decimal \nvalues and compares them "
   "with the following reference value.\n" );
   
   // Create a reference Decimal value.
   Decimal Left = Decimal(123.456);
   Console::WriteLine( gcnew String( protoFmt ), "Left: Decimal( 123.456 )", Left );
   
   // Create Decimal values to compare with the reference.
   CompareDecimals( Left, Decimal(1.2345600E+2), "Decimal( 1.2345600E+2 )" );
   CompareDecimals( Left, Decimal::Parse( "123.4561" ), "Decimal::Parse( \"123.4561\" )" );
   CompareDecimals( Left, Decimal::Parse( "123.4559" ), "Decimal::Parse( \"123.4559\" )" );
   CompareDecimals( Left, Decimal::Parse( "123.456000" ), "Decimal::Parse( \"123.456000\" )" );
   CompareDecimals( Left, Decimal(123456000,0,0,false,6), "Decimal( 123456000, 0, 0, false, 6 )" );
}

/*
This example of the Decimal::Equals( Decimal, Decimal ) and
Decimal::Compare( Decimal, Decimal ) methods generates the
following output. It creates several different Decimal
values and compares them with the following reference value.

Left: Decimal( 123.456 )                     123.456

Right: Decimal( 1.2345600E+2 )               123.456
Decimal::Equals( Left, Right )               True
Decimal::Compare( Left, Right )              0

Right: Decimal::Parse( "123.4561" )          123.4561
Decimal::Equals( Left, Right )               False
Decimal::Compare( Left, Right )              -1

Right: Decimal::Parse( "123.4559" )          123.4559
Decimal::Equals( Left, Right )               False
Decimal::Compare( Left, Right )              1

Right: Decimal::Parse( "123.456000" )        123.456000
Decimal::Equals( Left, Right )               True
Decimal::Compare( Left, Right )              0

Right: Decimal( 123456000, 0, 0, false, 6 )  123.456000
Decimal::Equals( Left, Right )               True
Decimal::Compare( Left, Right )              0
*/

// Example of the decimal.Compare and static decimal.Equals methods.
using System;

class DecCompareEqualsDemo
{
    const string dataFmt = "{0,-45}{1}";

    // Compare decimal parameters, and display them with the results.
    public static void CompareDecimals( decimal Left, decimal Right,
        string RightText )
    {
        Console.WriteLine( );
        Console.WriteLine( dataFmt, "Right: "+RightText, Right );
        Console.WriteLine( dataFmt, "decimal.Equals( Left, Right )",
            Decimal.Equals( Left, Right ) );
        Console.WriteLine( dataFmt, "decimal.Compare( Left, Right )",
            Decimal.Compare( Left, Right ) );
    }

    public static void Main( )
    {
        Console.WriteLine( "This example of the " +
            "decimal.Equals( decimal, decimal ) and \n" +
            "decimal.Compare( decimal, decimal ) methods " +
            "generates the \nfollowing output. It creates several " +
            "different decimal \nvalues and compares them with " +
            "the following reference value.\n" );

        // Create a reference decimal value.
        decimal Left = new decimal( 123.456 );

        Console.WriteLine( dataFmt, "Left: decimal( 123.456 )",
            Left );

        // Create decimal values to compare with the reference.
        CompareDecimals( Left, new decimal( 1.2345600E+2 ),
            "decimal( 1.2345600E+2 )" );
        CompareDecimals( Left, 123.4561M, "123.4561M" );
        CompareDecimals( Left, 123.4559M, "123.4559M" );
        CompareDecimals( Left, 123.456000M, "123.456000M" );
        CompareDecimals( Left,
            new decimal( 123456000, 0, 0, false, 6 ),
            "decimal( 123456000, 0, 0, false, 6 )" );
    }
}

/*
This example of the decimal.Equals( decimal, decimal ) and
decimal.Compare( decimal, decimal ) methods generates the
following output. It creates several different decimal
values and compares them with the following reference value.

Left: decimal( 123.456 )                     123.456

Right: decimal( 1.2345600E+2 )               123.456
decimal.Equals( Left, Right )                True
decimal.Compare( Left, Right )               0

Right: 123.4561M                             123.4561
decimal.Equals( Left, Right )                False
decimal.Compare( Left, Right )               -1

Right: 123.4559M                             123.4559
decimal.Equals( Left, Right )                False
decimal.Compare( Left, Right )               1

Right: 123.456000M                           123.456000
decimal.Equals( Left, Right )                True
decimal.Compare( Left, Right )               0

Right: decimal( 123456000, 0, 0, false, 6 )  123.456000
decimal.Equals( Left, Right )                True
decimal.Compare( Left, Right )               0
*/

// Example of the decimal.Compare and static decimal.Equals methods.
open System

let print message obj = printfn $"%-45s{message}{obj}"

// Compare decimal parameters, and display them with the results.
let compareDecimals (left: decimal) (right: decimal) (rightText: string) =
    printfn ""
    print $"right: {rightText}" right
    print "decimal.Equals(left, right)  " (Decimal.Equals(left, right))
    print "decimal.Compare(left, right)  " (Decimal.Compare(left, right))

Console.WriteLine( "This example of the " +
    "decimal.Equals(decimal, decimal) and \n" +
    "decimal.Compare(decimal, decimal) methods " +
    "generates the \nfollowing output. It creates several " +
    "different decimal \nvalues and compares them with " +
    "the following reference value.\n" )

// Create a reference decimal value.
let left = decimal 123.456

print "left: decimal( 123.456 )" left

// Create decimal values to compare with the reference.
compareDecimals left (decimal 1.2345600E+2 ) "decimal(1.2345600E+2)"
compareDecimals left 123.4561M "123.4561M"
compareDecimals left 123.4559M "123.4559M"
compareDecimals left 123.456000M "123.456000M"
compareDecimals left (Decimal(123456000, 0, 0, false, 6uy)) "Decimal(123456000, 0, 0, false, 6)"


// This example of the decimal.Equals(decimal, decimal) and
// decimal.Compare(decimal, decimal) methods generates the
// following output. It creates several different decimal
// values and compares them with the following reference value.

// left: decimal(123.456)                       123.456

// right: decimal(1.2345600E+2)                 123.456
// decimal.Equals(left, right)                  True
// decimal.Compare(left, right)                 0

// right: 123.4561M                             123.4561
// decimal.Equals(left, right)                  False
// decimal.Compare(left, right)                 -1

// right: 123.4559M                             123.4559
// decimal.Equals(left, right)                  False
// decimal.Compare(left, right)                 1

// right: 123.456000M                           123.456000
// decimal.Equals(left, right)                  True
// decimal.Compare(left, right)                 0

// right: decimal(123456000, 0, 0, false, 6)    123.456000
// decimal.Equals(left, right)                  True
// decimal.Compare(left, right)                 0

' Example of the Decimal.Compare and static Decimal.Equals methods.
Module DecCompareEqualsDemo
    
    Const dataFmt As String = "{0,-45}{1}"

    ' Compare Decimal parameters, and display them with the results.
    Sub CompareDecimals( Left as Decimal, Right as Decimal, _
        RightText as String )

        Console.WriteLine( )
        Console.WriteLine( dataFmt, "Right: " & RightText, Right )
        Console.WriteLine( dataFmt, "Decimal.Equals( Left, Right )", _
            Decimal.Equals( Left, Right ) )
        Console.WriteLine( dataFmt, _
            "Decimal.Compare( Left, Right )", _
            Decimal.Compare( Left, Right ) )
    End Sub

    Sub Main( )
        Console.WriteLine( _
            "This example of the Decimal.Equals( Decimal, " & _
            "Decimal ) and " & vbCrLf & "Decimal.Compare( " & _
            "Decimal, Decimal ) methods generates the " & vbCrLf & _
            "following output. It creates several different " & _
            "Decimal " & vbCrLf & "values and compares them " & _
            "with the following reference value." & vbCrLf )

        ' Create a reference Decimal value.
        Dim Left as New Decimal( 123.456 )

        Console.WriteLine( dataFmt, "Left: Decimal( 123.456 )", Left )

        ' Create Decimal values to compare with the reference.
        CompareDecimals( Left, New Decimal( 1.2345600E+2 ), _
            "Decimal( 1.2345600E+2 )" )
        CompareDecimals( Left, 123.4561D, "123.4561D" )
        CompareDecimals( Left, 123.4559D, "123.4559D" )
        CompareDecimals( Left, 123.456000D, "123.456000D" )
        CompareDecimals( Left, _
            New Decimal( 123456000, 0, 0, false, 6 ), _
            "Decimal( 123456000, 0, 0, false, 6 )" )
    End Sub 
End Module 

' This example of the Decimal.Equals( Decimal, Decimal ) and
' Decimal.Compare( Decimal, Decimal ) methods generates the
' following output. It creates several different Decimal
' values and compares them with the following reference value.
' 
' Left: Decimal( 123.456 )                     123.456
' 
' Right: Decimal( 1.2345600E+2 )               123.456
' Decimal.Equals( Left, Right )                True
' Decimal.Compare( Left, Right )               0
' 
' Right: 123.4561D                             123.4561
' Decimal.Equals( Left, Right )                False
' Decimal.Compare( Left, Right )               -1
' 
' Right: 123.4559D                             123.4559
' Decimal.Equals( Left, Right )                False
' Decimal.Compare( Left, Right )               1
' 
' Right: 123.456000D                           123.456
' Decimal.Equals( Left, Right )                True
' Decimal.Compare( Left, Right )               0
' 
' Right: Decimal( 123456000, 0, 0, false, 6 )  123.456000
' Decimal.Equals( Left, Right )                True
' Decimal.Compare( Left, Right )               0

Voir aussi

S’applique à

Equals(Object)

Source:
Decimal.cs
Source:
Decimal.cs
Source:
Decimal.cs

Retourne une valeur indiquant si cette instance et un Object spécifié représentent le même type et la même valeur.

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

Paramètres

value
Object

Objet à comparer avec cette instance.

Retours

Boolean

true si value est Decimal et s'il est égal à cette instance ; sinon, false.

Exemples

L’exemple de code suivant compare plusieurs Decimal objets et d’autres à une valeur de référence Decimal à l’aide de la Equals méthode .

// Example of the Decimal::CompareTo and Decimal::Equals instance 
// methods.
using namespace System;

// Get the exception type name; remove the namespace prefix.
String^ GetExceptionType( Exception^ ex )
{
   String^ exceptionType = ex->GetType()->ToString();
   return exceptionType->Substring( exceptionType->LastIndexOf( '.' ) + 1 );
}


// Compare the Decimal to the Object parameters, 
// and display the Object parameters with the results.
void CompDecimalToObject( Decimal Left, Object^ Right, String^ RightText )
{
   Console::WriteLine( "{0,-46}{1}", String::Concat( "Object: ", RightText ), Right );
   Console::WriteLine( "{0,-46}{1}", "Left.Equals( Object )", Left.Equals( Right ) );
   Console::Write( "{0,-46}", "Left.CompareTo( Object )" );
   try
   {
      
      // Catch the exception if CompareTo( ) throws one.
      Console::WriteLine( "{0}\n", Left.CompareTo( Right ) );
   }
   catch ( Exception^ ex ) 
   {
      Console::WriteLine( "{0}\n", GetExceptionType( ex ) );
   }

}

int main()
{
   Console::WriteLine( "This example of the Decimal::Equals( Object* ) and \n"
   "Decimal::CompareTo( Object* ) methods generates the \n"
   "following output. It creates several different "
   "Decimal \nvalues and compares them with the following "
   "reference value.\n" );
   
   // Create a reference Decimal value.
   Decimal Left = Decimal(987.654);
   Console::WriteLine( "{0,-46}{1}\n", "Left: Decimal( 987.654 )", Left );
   
   // Create objects to compare with the reference.
   CompDecimalToObject( Left, Decimal(9.8765400E+2), "Decimal( 9.8765400E+2 )" );
   CompDecimalToObject( Left, Decimal::Parse( "987.6541" ), "Decimal::Parse( \"987.6541\" )" );
   CompDecimalToObject( Left, Decimal::Parse( "987.6539" ), "Decimal::Parse( \"987.6539\" )" );
   CompDecimalToObject( Left, Decimal(987654000,0,0,false,6), "Decimal( 987654000, 0, 0, false, 6 )" );
   CompDecimalToObject( Left, 9.8765400E+2, "Double 9.8765400E+2" );
   CompDecimalToObject( Left, "987.654", "String \"987.654\"" );
}

/*
This example of the Decimal::Equals( Object* ) and
Decimal::CompareTo( Object* ) methods generates the
following output. It creates several different Decimal
values and compares them with the following reference value.

Left: Decimal( 987.654 )                      987.654

Object: Decimal( 9.8765400E+2 )               987.654
Left.Equals( Object )                         True
Left.CompareTo( Object )                      0

Object: Decimal::Parse( "987.6541" )          987.6541
Left.Equals( Object )                         False
Left.CompareTo( Object )                      -1

Object: Decimal::Parse( "987.6539" )          987.6539
Left.Equals( Object )                         False
Left.CompareTo( Object )                      1

Object: Decimal( 987654000, 0, 0, false, 6 )  987.654000
Left.Equals( Object )                         True
Left.CompareTo( Object )                      0

Object: Double 9.8765400E+2                   987.654
Left.Equals( Object )                         False
Left.CompareTo( Object )                      ArgumentException

Object: String "987.654"                      987.654
Left.Equals( Object )                         False
Left.CompareTo( Object )                      ArgumentException
*/

// Example of the decimal.CompareTo and decimal.Equals instance
// methods.
using System;

class DecCompToEqualsObjDemo
{
    // Get the exception type name; remove the namespace prefix.
    public static string GetExceptionType( Exception ex )
    {
        string exceptionType = ex.GetType( ).ToString( );
        return exceptionType.Substring(
            exceptionType.LastIndexOf( '.' ) + 1 );
    }

    // Compare the decimal to the object parameters,
    // and display the object parameters with the results.
    public static void CompDecimalToObject( decimal Left,
        object Right, string RightText )
    {

        Console.WriteLine( "{0,-46}{1}", "object: "+RightText,
            Right );
        Console.WriteLine( "{0,-46}{1}", "Left.Equals( object )",
            Left.Equals( Right ) );
        Console.Write( "{0,-46}", "Left.CompareTo( object )" );

        try
        {
            // Catch the exception if CompareTo( ) throws one.
            Console.WriteLine( "{0}\n", Left.CompareTo( Right ) );
        }
        catch( Exception ex )
        {
            Console.WriteLine( "{0}\n", GetExceptionType( ex ) );
        }
    }

    public static void Main( )
    {
        Console.WriteLine(
            "This example of the decimal.Equals( object ) and \n" +
            "decimal.CompareTo( object ) methods generates the \n" +
            "following output. It creates several different " +
            "decimal \nvalues and compares them with the following " +
            "reference value.\n" );

        // Create a reference decimal value.
        decimal Left = new decimal( 987.654 );

        Console.WriteLine( "{0,-46}{1}\n",
            "Left: decimal( 987.654 )", Left );

        // Create objects to compare with the reference.
        CompDecimalToObject( Left, new decimal( 9.8765400E+2 ),
            "decimal( 9.8765400E+2 )" );
        CompDecimalToObject( Left, 987.6541M, "987.6541D" );
        CompDecimalToObject( Left, 987.6539M, "987.6539D" );
        CompDecimalToObject( Left,
            new decimal( 987654000, 0, 0, false, 6 ),
            "decimal( 987654000, 0, 0, false, 6 )" );
        CompDecimalToObject( Left, 9.8765400E+2,
            "Double 9.8765400E+2" );
        CompDecimalToObject( Left, "987.654", "String \"987.654\"" );
    }
}

/*
This example of the decimal.Equals( object ) and
decimal.CompareTo( object ) methods generates the
following output. It creates several different decimal
values and compares them with the following reference value.

Left: decimal( 987.654 )                      987.654

object: decimal( 9.8765400E+2 )               987.654
Left.Equals( object )                         True
Left.CompareTo( object )                      0

object: 987.6541D                             987.6541
Left.Equals( object )                         False
Left.CompareTo( object )                      -1

object: 987.6539D                             987.6539
Left.Equals( object )                         False
Left.CompareTo( object )                      1

object: decimal( 987654000, 0, 0, false, 6 )  987.654000
Left.Equals( object )                         True
Left.CompareTo( object )                      0

object: Double 9.8765400E+2                   987.654
Left.Equals( object )                         False
Left.CompareTo( object )                      ArgumentException

object: String "987.654"                      987.654
Left.Equals( object )                         False
Left.CompareTo( object )                      ArgumentException
*/

// Example of the decimal.CompareTo and decimal.Equals instance
// methods.
open System

// Get the exception type name remove the namespace prefix.
let getExceptionType (ex: exn) =
    let exceptionType = ex.GetType() |> string
    exceptionType.Substring(exceptionType.LastIndexOf '.'  + 1)

// Compare the decimal to the object parameters,
// and display the object parameters with the results.
let compDecimalToObject (left: decimal) (right: obj) (rightText: string) =
    printfn $"object: %-38s{rightText}{right}"
    printfn $"""%-46s{"left.Equals(object)"}{left.Equals right}"""       
    printf $"""%-46s{"left.CompareTo(object)"}"""

    try
        // Catch the exception if CompareTo( ) throws one.
        printfn $"{left.CompareTo right}\n"
    with ex ->
        printfn $"{getExceptionType ex}\n"

Console.WriteLine(
    "This example of the decimal.Equals( object ) and \n" +
    "decimal.CompareTo( object ) methods generates the \n" +
    "following output. It creates several different " +
    "decimal \nvalues and compares them with the following " +
    "reference value.\n" )

// Create a reference decimal value.
let left = decimal 987.654

printfn $"""{"Left: decimal(987.654)",-46}{left}\n"""

// Create objects to compare with the reference.
compDecimalToObject left (decimal 9.8765400E+2 ) "decimal(9.8765400E+2)"
compDecimalToObject left 987.6541M "987.6541D"
compDecimalToObject left 987.6539M "987.6539D"
compDecimalToObject left (Decimal(987654000, 0, 0, false, 6uy)) "Decimal(987654000, 0, 0, false, 6)"
compDecimalToObject left 9.8765400E+2 "Double 9.8765400E+2"
compDecimalToObject left "987.654" "String \"987.654\""


// This example of the Decimal.Equals(object) and
// Decimal.CompareTo(object) methods generates the
// following output. It creates several different decimal
// values and compares them with the following reference value.
// Left: decimal(987.654)                        987.654
//
// object: decimal(9.8765400E+2)                 987.654
// left.Equals(object)                           True
// left.CompareTo(object)                        0
//
// object: 987.6541D                             987.6541
// left.Equals(object)                           False
// left.CompareTo(object)                        -1
//
// object: 987.6539D                             987.6539
// left.Equals(object)                           False
// left.CompareTo(object)                        1
//
// object: Decimal(987654000, 0, 0, false, 6)    987.654000
// left.Equals(object)                           True
// left.CompareTo(object)                        0
//
// object: Double 9.8765400E+2                   987.654
// left.Equals(object)                           False
// left.CompareTo(object)                        ArgumentException
//
// object: String "987.654"                      987.654
// left.Equals(object)                           False
// left.CompareTo(object)                        ArgumentException

' Example of the Decimal.CompareTo and Decimal.Equals instance methods.
Module DecCompToEqualsObjDemo
    
    ' Get the exception type name; remove the namespace prefix.
    Function GetExceptionType( ex As Exception ) As String

        Dim exceptionType   As String = ex.GetType( ).ToString( )
        Return exceptionType.Substring( _
            exceptionType.LastIndexOf( "."c ) + 1 )
    End Function

    ' Compare the Decimal to the Object parameters, 
    ' and display the Object parameters with the results.
    Sub CompDecimalToObject( Left as Decimal, Right as Object, _
        RightText as String )

        Console.WriteLine( "{0,-46}{1}", "Object: " & RightText, _
            Right )
        Console.WriteLine( "{0,-46}{1}", "Left.Equals( Object )", _
            Left.Equals( Right ) )
        Console.Write( "{0,-46}", "Left.CompareTo( Object )" )

        ' Catch the exception if CompareTo( ) throws one.
        Try
            Console.WriteLine( "{0}" & vbCrLf, _
                Left.CompareTo( Right ) )
        Catch ex As Exception
            Console.WriteLine( "{0}" & vbCrLf, _
                GetExceptionType( ex ) )
        End Try
    End Sub

    Sub Main( )
        Console.WriteLine( _
            "This example of the Decimal.Equals( Object ) " & _
            "and " & vbCrLf & "Decimal.CompareTo( Object ) " & _
            "methods generates the " & vbCrLf & _
            "following output. It creates several different " & _
            "Decimal " & vbCrLf & "values and compares them " & _
            "with the following reference value." & vbCrLf )

        ' Create a reference Decimal value.
        Dim Left as New Decimal( 987.654 )

        Console.WriteLine( "{0,-46}{1}" & vbCrLf, _
            "Left: Decimal( 987.654 )", Left )

        ' Create objects to compare with the reference.
        CompDecimalToObject( Left, New Decimal( 9.8765400E+2 ), _
            "Decimal( 9.8765400E+2 )" )
        CompDecimalToObject( Left, 987.6541D, "987.6541D" )
        CompDecimalToObject( Left, 987.6539D, "987.6539D" )
        CompDecimalToObject( Left, _
            New Decimal( 987654000, 0, 0, false, 6 ), _
            "Decimal( 987654000, 0, 0, false, 6 )" )
        CompDecimalToObject( Left, 9.8765400E+2, _
            "Double 9.8765400E+2" )
        CompDecimalToObject( Left, "987.654", _
            "String ""987.654""" )
    End Sub
End Module 

' This example of the Decimal.Equals( Object ) and
' Decimal.CompareTo( Object ) methods generates the
' following output. It creates several different Decimal
' values and compares them with the following reference value.
' 
' Left: Decimal( 987.654 )                      987.654
' 
' Object: Decimal( 9.8765400E+2 )               987.654
' Left.Equals( Object )                         True
' Left.CompareTo( Object )                      0
' 
' Object: 987.6541D                             987.6541
' Left.Equals( Object )                         False
' Left.CompareTo( Object )                      -1
' 
' Object: 987.6539D                             987.6539
' Left.Equals( Object )                         False
' Left.CompareTo( Object )                      1
' 
' Object: Decimal( 987654000, 0, 0, false, 6 )  987.654000
' Left.Equals( Object )                         True
' Left.CompareTo( Object )                      0
' 
' Object: Double 9.8765400E+2                   987.654
' Left.Equals( Object )                         False
' Left.CompareTo( Object )                      ArgumentException
' 
' Object: String "987.654"                      987.654
' Left.Equals( Object )                         False
' Left.CompareTo( Object )                      ArgumentException

Notes pour les appelants

La résolution de la surcharge du compilateur peut tenir compte d’une différence apparente dans le comportement des deux Equals(Object) surcharges de méthode. Si une conversion implicite entre l’argument obj et un Decimal est définie et que l’argument n’est pas typé en tant que Object, les compilateurs peuvent effectuer une conversion implicite et appeler la Equals(Decimal) méthode . Sinon, ils appellent la Equals(Object) méthode, qui retourne false toujours si son obj argument n’est pas une Decimal valeur. L’exemple suivant illustre la différence de comportement entre les deux surcharges de méthode. Dans le cas de tous les types intégraux primitifs, y compris les types signés et non signés, la première comparaison retourne true parce que le compilateur effectue automatiquement une conversion d’élargissement et appelle la Equals(Decimal) méthode, tandis que la deuxième comparaison retourne false parce que le compilateur appelle la Equals(Object) méthode.

using System;

public class Example
{
   static decimal value = 112m;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,17}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,17}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,19}", value.Equals(int1));
      TestObjectForEquality(int1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,18}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,17}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,17}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,19}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,18}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      float sng1 = 112;
      Console.WriteLine("value = sng1: {0,21}", value.Equals(sng1));
      TestObjectForEquality(sng1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,21}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:              True
//       112 (Decimal) = 112 (Byte): False
//
//       value = short1:              True
//       112 (Decimal) = 112 (Int16): False
//
//       value = int1:                True
//       112 (Decimal) = 112 (Int32): False
//
//       value = long1:               True
//       112 (Decimal) = 112 (Int64): False
//
//       value = sbyte1:              True
//       112 (Decimal) = 112 (SByte): False
//
//       value = ushort1:              True
//       112 (Decimal) = 112 (UInt16): False
//
//       value = uint1:                True
//       112 (Decimal) = 112 (UInt32): False
//
//       value = ulong1:               True
//       112 (Decimal) = 112 (UInt64): False
//
//       value = sng1:                 False
//       112 (Decimal) = 112 (Single): False
//
//       value = dbl1:                 False
//       112 (Decimal) = 112 (Double): False

let value = 112m

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

let byte1 = 112uy
printfn $"value = byte1: {value.Equals byte1,17}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals short1,17}"
testObjectForEquality short1

let int1 = 112
printfn $"value = int1: {value.Equals int1,19}"
testObjectForEquality int1

let long1 = 112L
printfn $"value = long1: {value.Equals long1,18}"
testObjectForEquality long1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals sbyte1,17}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals ushort1,17}"
testObjectForEquality ushort1

let uint1 = 112u
printfn $"value = uint1: {value.Equals uint1,19}"
testObjectForEquality uint1

let ulong1 = 112uL
printfn $"value = ulong1: {value.Equals ulong1,18}"
testObjectForEquality ulong1

let sng1 = 112f
printfn $"value = sng1: {value.Equals sng1,21}"
testObjectForEquality sng1

let dbl1 = 112.
printfn $"value = dbl1: {value.Equals dbl1,21}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:              True
//       112 (Decimal) = 112 (Byte): False
//
//       value = short1:              True
//       112 (Decimal) = 112 (Int16): False
//
//       value = int1:                True
//       112 (Decimal) = 112 (Int32): False
//
//       value = long1:               True
//       112 (Decimal) = 112 (Int64): False
//
//       value = sbyte1:              True
//       112 (Decimal) = 112 (SByte): False
//
//       value = ushort1:              True
//       112 (Decimal) = 112 (UInt16): False
//
//       value = uint1:                True
//       112 (Decimal) = 112 (UInt32): False
//
//       value = ulong1:               True
//       112 (Decimal) = 112 (UInt64): False
//
//       value = sng1:                 False
//       112 (Decimal) = 112 (Single): False
//
//       value = dbl1:                 False
//       112 (Decimal) = 112 (Double): False

Module Example
   Dim value As Decimal = 112d
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,17}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,17}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,19}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,18}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,17}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,17}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,19}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,18}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim sng1 As Single = 112
      Console.WriteLine("value = sng1: {0,21}", value.Equals(sng1))
      TestObjectForEquality(sng1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,21}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub
   
   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:              True
'       112 (Decimal) = 112 (Byte): False
'
'       value = short1:              True
'       112 (Decimal) = 112 (Int16): False
'
'       value = int1:                True
'       112 (Decimal) = 112 (Int32): False
'
'       value = long1:               True
'       112 (Decimal) = 112 (Int64): False
'
'       value = sbyte1:              True
'       112 (Decimal) = 112 (SByte): False
'
'       value = ushort1:              True
'       112 (Decimal) = 112 (UInt16): False
'
'       value = uint1:                True
'       112 (Decimal) = 112 (UInt32): False
'
'       value = ulong1:               True
'       112 (Decimal) = 112 (UInt64): False
'
'       value = sng1:                 False
'       112 (Decimal) = 112 (Single): False
'
'       value = dbl1:                 False
'       112 (Decimal) = 112 (Double): False

Voir aussi

S’applique à

Equals(Decimal)

Source:
Decimal.cs
Source:
Decimal.cs
Source:
Decimal.cs

Retourne une valeur indiquant si cette instance et un objet Decimal spécifié représentent la même valeur.

public:
 virtual bool Equals(System::Decimal value);
public bool Equals (decimal value);
override this.Equals : decimal -> bool
Public Function Equals (value As Decimal) As Boolean

Paramètres

value
Decimal

Objet à comparer à cette instance.

Retours

Boolean

true si value est égal à cette instance ; sinon, false.

Implémente

Equals(T)

Remarques

Cette méthode implémente l’interface System.IEquatable<T> et fonctionne légèrement mieux que Equals parce qu’elle n’a pas besoin de convertir le value paramètre en objet.

Si value a moins de bits (est plus étroit) que le type d’instance, certains langages de programmation effectuent une conversion d’élargissement implicite qui transforme la valeur du paramètre en une valeur avec plus de bits.

Par exemple, supposons que le type d’instance est Int32 et que le type de paramètre est Byte. Le compilateur C# Microsoft génère des instructions pour représenter la valeur du paramètre en tant qu’objetInt32, puis génère une Int32.CompareTo méthode pour comparer l’instance et la Int32 représentation des paramètres.

Consultez la documentation de votre langage de programmation pour déterminer si son compilateur effectue des conversions d’élargissement implicites sur les types numériques.

Notes pour les appelants

La résolution de la surcharge du compilateur peut tenir compte d’une différence apparente dans le comportement des deux Equals(Object) surcharges de méthode. Si une conversion implicite entre l’argument obj et un Decimal est définie et que l’argument n’est pas typé en tant que Object, les compilateurs peuvent effectuer une conversion implicite et appeler la Equals(Decimal) méthode . Sinon, ils appellent la Equals(Object) méthode, qui retourne false toujours si son obj argument n’est pas une Decimal valeur. L’exemple suivant illustre la différence de comportement entre les deux surcharges de méthode. Dans le cas de tous les types intégraux primitifs, y compris les types signés et non signés, la première comparaison retourne true parce que le compilateur effectue automatiquement une conversion d’élargissement et appelle la Equals(Decimal) méthode, tandis que la deuxième comparaison retourne false parce que le compilateur appelle la Equals(Object) méthode.

using System;

public class Example
{
   static decimal value = 112m;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,17}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,17}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,19}", value.Equals(int1));
      TestObjectForEquality(int1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,18}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,17}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,17}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,19}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,18}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      float sng1 = 112;
      Console.WriteLine("value = sng1: {0,21}", value.Equals(sng1));
      TestObjectForEquality(sng1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,21}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:              True
//       112 (Decimal) = 112 (Byte): False
//
//       value = short1:              True
//       112 (Decimal) = 112 (Int16): False
//
//       value = int1:                True
//       112 (Decimal) = 112 (Int32): False
//
//       value = long1:               True
//       112 (Decimal) = 112 (Int64): False
//
//       value = sbyte1:              True
//       112 (Decimal) = 112 (SByte): False
//
//       value = ushort1:              True
//       112 (Decimal) = 112 (UInt16): False
//
//       value = uint1:                True
//       112 (Decimal) = 112 (UInt32): False
//
//       value = ulong1:               True
//       112 (Decimal) = 112 (UInt64): False
//
//       value = sng1:                 False
//       112 (Decimal) = 112 (Single): False
//
//       value = dbl1:                 False
//       112 (Decimal) = 112 (Double): False

let value = 112m

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

let byte1 = 112uy
printfn $"value = byte1: {value.Equals byte1,17}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals short1,17}"
testObjectForEquality short1

let int1 = 112
printfn $"value = int1: {value.Equals int1,19}"
testObjectForEquality int1

let long1 = 112L
printfn $"value = long1: {value.Equals long1,18}"
testObjectForEquality long1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals sbyte1,17}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals ushort1,17}"
testObjectForEquality ushort1

let uint1 = 112u
printfn $"value = uint1: {value.Equals uint1,19}"
testObjectForEquality uint1

let ulong1 = 112uL
printfn $"value = ulong1: {value.Equals ulong1,18}"
testObjectForEquality ulong1

let sng1 = 112f
printfn $"value = sng1: {value.Equals sng1,21}"
testObjectForEquality sng1

let dbl1 = 112.
printfn $"value = dbl1: {value.Equals dbl1,21}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:              True
//       112 (Decimal) = 112 (Byte): False
//
//       value = short1:              True
//       112 (Decimal) = 112 (Int16): False
//
//       value = int1:                True
//       112 (Decimal) = 112 (Int32): False
//
//       value = long1:               True
//       112 (Decimal) = 112 (Int64): False
//
//       value = sbyte1:              True
//       112 (Decimal) = 112 (SByte): False
//
//       value = ushort1:              True
//       112 (Decimal) = 112 (UInt16): False
//
//       value = uint1:                True
//       112 (Decimal) = 112 (UInt32): False
//
//       value = ulong1:               True
//       112 (Decimal) = 112 (UInt64): False
//
//       value = sng1:                 False
//       112 (Decimal) = 112 (Single): False
//
//       value = dbl1:                 False
//       112 (Decimal) = 112 (Double): False

Module Example
   Dim value As Decimal = 112d
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,17}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,17}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,19}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,18}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,17}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,17}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,19}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,18}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim sng1 As Single = 112
      Console.WriteLine("value = sng1: {0,21}", value.Equals(sng1))
      TestObjectForEquality(sng1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,21}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub
   
   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:              True
'       112 (Decimal) = 112 (Byte): False
'
'       value = short1:              True
'       112 (Decimal) = 112 (Int16): False
'
'       value = int1:                True
'       112 (Decimal) = 112 (Int32): False
'
'       value = long1:               True
'       112 (Decimal) = 112 (Int64): False
'
'       value = sbyte1:              True
'       112 (Decimal) = 112 (SByte): False
'
'       value = ushort1:              True
'       112 (Decimal) = 112 (UInt16): False
'
'       value = uint1:                True
'       112 (Decimal) = 112 (UInt32): False
'
'       value = ulong1:               True
'       112 (Decimal) = 112 (UInt64): False
'
'       value = sng1:                 False
'       112 (Decimal) = 112 (Single): False
'
'       value = dbl1:                 False
'       112 (Decimal) = 112 (Double): False

Voir aussi

S’applique à