Int64.Equals Méthode

Définition

Espace de noms:: System

Assemblys:: mscorlib.dll, System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: System.Runtime.dll

Assembly:: netstandard.dll

Important

Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.

Retourne une valeur indiquant si cette instance est égale à un objet spécifié ou Int64.

Surcharges

Nom	Description
Equals(Int64)	Retourne une valeur indiquant si cette instance est égale à une valeur spécifiée Int64 .
Equals(Object)	Retourne une valeur indiquant si cette instance est égale à un objet spécifié.

Equals(Int64)

Retourne une valeur indiquant si cette instance est égale à une valeur spécifiée Int64 .

public:
 virtual bool Equals(long obj);

public bool Equals(long obj);

override this.Equals : int64 -> bool

Public Function Equals (obj As Long) As Boolean

Paramètres

obj: Int64

Valeur Int64 à comparer à cette instance.

Retours

Boolean

true si obj elle a la même valeur que cette instance ; sinon, false.

Implémente

Equals(T)

Remarques

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

Notes pour les appelants

La résolution de surcharge du compilateur peut tenir compte d’une différence apparente dans le comportement des deux Equals(Int64) surcharges de méthode. Si une conversion implicite entre l’argument obj et un Int64 argument est définie et que l’argument n’est pas typé comme un Object, les compilateurs effectuent une conversion implicite et appellent la Equals(Int64) méthode. Sinon, ils appellent la Equals(Object) méthode, qui retourne false toujours si son obj argument n’est pas une Int64 valeur. L’exemple suivant illustre la différence de comportement entre les deux surcharges de méthode. Dans le cas des Bytevaleurs , , Int16 SByte UInt16, Int32et UInt32 les valeurs, la première comparaison retournetrue, car le compilateur effectue automatiquement une conversion étendue et appelle la Equals(Int64) méthode, tandis que la deuxième comparaison retourne false parce que le compilateur appelle la Equals(Object) méthode.

using System;

public class Example
{
   static long value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,17}", value.Equals(int1));
      TestObjectForEquality(int1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,17}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,19}", 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 (Int64) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int64) = 112 (Int16): False
//
//       value = int1:              True
//       112 (Int64) = 112 (Int32): False
//
//       value = sbyte1:            True
//       112 (Int64) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int64) = 112 (UInt16): False
//
//       value = uint1:              True
//       112 (Int64) = 112 (UInt32): False
//
//       value = dec1:                False
//       112 (Int64) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int64) = 112 (Double): False

let value = 112

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(int byte1),15}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals(int short1),15}"
testObjectForEquality short1

let int1 = 112
printfn $"value = int1: {value.Equals(int int1),17}"
testObjectForEquality int1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals(int sbyte1),15}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals(int ushort1),15}"
testObjectForEquality ushort1

let uint1 = 112u
printfn $"value = uint1: {value.Equals(int uint1),17}"
testObjectForEquality uint1

let dec1 = 112M
printfn $"value = dec1: {value.Equals(int dec1),20}"
testObjectForEquality dec1

let dbl1 = 112.0
printfn $"value = dbl1: {value.Equals(int dbl1),19}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:            True
//       112 (Int64) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int64) = 112 (Int16): False
//
//       value = int1:              True
//       112 (Int64) = 112 (Int32): False
//
//       value = sbyte1:            True
//       112 (Int64) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int64) = 112 (UInt16): False
//
//       value = uint1:              True
//       112 (Int64) = 112 (UInt32): False
//
//       value = dec1:                False
//       112 (Int64) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int64) = 112 (Double): False

Module Example
   Dim value As Int64 = 112
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,17}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,17}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,19}", 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 (Int64) = 112 (Byte): False
'
'       value = short1:            True
'       112 (Int64) = 112 (Int16): False
'
'       value = int1:              True
'       112 (Int64) = 112 (Int32): False
'
'       value = sbyte1:            True
'       112 (Int64) = 112 (SByte): False
'
'       value = ushort1:            True
'       112 (Int64) = 112 (UInt16): False
'
'       value = uint1:              True
'       112 (Int64) = 112 (UInt32): False
'
'       value = dec1:                False
'       112 (Int64) = 112 (Decimal): False
'
'       value = dbl1:               False
'       112 (Int64) = 112 (Double): False

S’applique à

Equals(Object)

Retourne une valeur indiquant si cette instance est égale à un objet spécifié.

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

public override bool Equals(object obj);

override this.Equals : obj -> bool

Public Overrides Function Equals (obj As Object) As Boolean

Paramètres

obj: Object

Objet à comparer à cette instance.

Retours

Boolean

true s’il obj s’agit d’une instance d’une Int64 instance et est égale à la valeur de cette instance ; sinon, false.

Exemples

L’exemple de code suivant illustre l’utilisation dans Equals le contexte de , la comparaison de Int64deux valeurs longues et le retour true s’ils représentent le même nombre, ou false s’ils ne le font pas.

Int64 myVariable1 = 80;
Int64 myVariable2 = 80;

// Get and display the declaring type.
Console.WriteLine("\nType of 'myVariable1' is '{0}' and"+
     " value is :{1}",myVariable1.GetType(), myVariable1);
Console.WriteLine("Type of 'myVariable2' is '{0}' and"+
     " value is :{1}",myVariable2.GetType(), myVariable2);

// Compare 'myVariable1' instance with 'myVariable2' Object.
if( myVariable1.Equals( myVariable2 ) )
   Console.WriteLine( "\nStructures 'myVariable1' and "+
         "'myVariable2' are equal");
else
   Console.WriteLine( "\nStructures 'myVariable1' and "+
         "'myVariable2' are not equal");

let myVariable1 = 80L
let myVariable2 = 80L

// Get and display the declaring type.
printfn $"\nType of 'myVariable1' is '{myVariable1.GetType()}' and value is: {myVariable1}"
printfn $"\nType of 'myVariable2' is '{myVariable2.GetType()}' and value is: {myVariable2}"

// Compare 'myVariable1' instance with 'myVariable2' Object.
if myVariable1.Equals myVariable2 then
    printfn "\nStructures 'myVariable1' and 'myVariable2' are equal"
else
    printfn "\nStructures 'myVariable1' and 'myVariable2' are not equal"

Dim myVariable1 As Int64 = 80
Dim myVariable2 As Int64 = 80

' Get and display the declaring type.
Console.WriteLine(ControlChars.NewLine + "Type of 'myVariable1' is '{0}' and" +  _
            " value is :{1}", myVariable1.GetType().ToString(), myVariable1.ToString())
Console.WriteLine("Type of 'myVariable2' is '{0}' and" +  _
         " value is :{1}", myVariable2.GetType().ToString(), myVariable2.ToString())

' Compare 'myVariable1' instance with 'myVariable2' Object.
If myVariable1.Equals(myVariable2) Then
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " + _
            "'myVariable2' are equal")
Else
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " +  _
         "'myVariable2' are not equal")
End If

Notes pour les appelants

using System;

public class Example
{
   static long value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,17}", value.Equals(int1));
      TestObjectForEquality(int1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,17}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,19}", 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 (Int64) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int64) = 112 (Int16): False
//
//       value = int1:              True
//       112 (Int64) = 112 (Int32): False
//
//       value = sbyte1:            True
//       112 (Int64) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int64) = 112 (UInt16): False
//
//       value = uint1:              True
//       112 (Int64) = 112 (UInt32): False
//
//       value = dec1:                False
//       112 (Int64) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int64) = 112 (Double): False

let value = 112

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(int byte1),15}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals(int short1),15}"
testObjectForEquality short1

let int1 = 112
printfn $"value = int1: {value.Equals(int int1),17}"
testObjectForEquality int1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals(int sbyte1),15}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals(int ushort1),15}"
testObjectForEquality ushort1

let uint1 = 112u
printfn $"value = uint1: {value.Equals(int uint1),17}"
testObjectForEquality uint1

let dec1 = 112M
printfn $"value = dec1: {value.Equals(int dec1),20}"
testObjectForEquality dec1

let dbl1 = 112.0
printfn $"value = dbl1: {value.Equals(int dbl1),19}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:            True
//       112 (Int64) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int64) = 112 (Int16): False
//
//       value = int1:              True
//       112 (Int64) = 112 (Int32): False
//
//       value = sbyte1:            True
//       112 (Int64) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int64) = 112 (UInt16): False
//
//       value = uint1:              True
//       112 (Int64) = 112 (UInt32): False
//
//       value = dec1:                False
//       112 (Int64) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int64) = 112 (Double): False

Module Example
   Dim value As Int64 = 112
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,17}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,17}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,19}", 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 (Int64) = 112 (Byte): False
'
'       value = short1:            True
'       112 (Int64) = 112 (Int16): False
'
'       value = int1:              True
'       112 (Int64) = 112 (Int32): False
'
'       value = sbyte1:            True
'       112 (Int64) = 112 (SByte): False
'
'       value = ushort1:            True
'       112 (Int64) = 112 (UInt16): False
'
'       value = uint1:              True
'       112 (Int64) = 112 (UInt32): False
'
'       value = dec1:                False
'       112 (Int64) = 112 (Decimal): False
'
'       value = dbl1:               False
'       112 (Int64) = 112 (Double): False

Voir aussi

CompareTo(Object)

S’applique à

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