Int64 Structure

Définition

public value class long : IComparable, IComparable<long>, IConvertible, IEquatable<long>, IFormattable

public value class long : IComparable<long>, IConvertible, IEquatable<long>, IParsable<long>, ISpanParsable<long>, IUtf8SpanParsable<long>, System::Numerics::IAdditionOperators<long, long, long>, System::Numerics::IAdditiveIdentity<long, long>, System::Numerics::IBinaryInteger<long>, System::Numerics::IBinaryNumber<long>, System::Numerics::IBitwiseOperators<long, long, long>, System::Numerics::IComparisonOperators<long, long, bool>, System::Numerics::IDecrementOperators<long>, System::Numerics::IDivisionOperators<long, long, long>, System::Numerics::IEqualityOperators<long, long, bool>, System::Numerics::IIncrementOperators<long>, System::Numerics::IMinMaxValue<long>, System::Numerics::IModulusOperators<long, long, long>, System::Numerics::IMultiplicativeIdentity<long, long>, System::Numerics::IMultiplyOperators<long, long, long>, System::Numerics::INumber<long>, System::Numerics::INumberBase<long>, System::Numerics::IShiftOperators<long, int, long>, System::Numerics::ISignedNumber<long>, System::Numerics::ISubtractionOperators<long, long, long>, System::Numerics::IUnaryNegationOperators<long, long>, System::Numerics::IUnaryPlusOperators<long, long>

public value class long : IComparable, IComparable<long>, IConvertible, IEquatable<long>, ISpanFormattable

public value class long : IComparable<long>, IConvertible, IEquatable<long>, IParsable<long>, ISpanParsable<long>, System::Numerics::IAdditionOperators<long, long, long>, System::Numerics::IAdditiveIdentity<long, long>, System::Numerics::IBinaryInteger<long>, System::Numerics::IBinaryNumber<long>, System::Numerics::IBitwiseOperators<long, long, long>, System::Numerics::IComparisonOperators<long, long, bool>, System::Numerics::IDecrementOperators<long>, System::Numerics::IDivisionOperators<long, long, long>, System::Numerics::IEqualityOperators<long, long, bool>, System::Numerics::IIncrementOperators<long>, System::Numerics::IMinMaxValue<long>, System::Numerics::IModulusOperators<long, long, long>, System::Numerics::IMultiplicativeIdentity<long, long>, System::Numerics::IMultiplyOperators<long, long, long>, System::Numerics::INumber<long>, System::Numerics::INumberBase<long>, System::Numerics::IShiftOperators<long, int, long>, System::Numerics::ISignedNumber<long>, System::Numerics::ISubtractionOperators<long, long, long>, System::Numerics::IUnaryNegationOperators<long, long>, System::Numerics::IUnaryPlusOperators<long, long>

public value class long : IComparable, IConvertible, IFormattable

public value class long : IComparable, IComparable<long>, IEquatable<long>, IFormattable

public struct Int64 : IComparable, IComparable<long>, IConvertible, IEquatable<long>, IFormattable

public readonly struct Int64 : IComparable<long>, IConvertible, IEquatable<long>, IParsable<long>, ISpanParsable<long>, IUtf8SpanParsable<long>, System.Numerics.IAdditionOperators<long,long,long>, System.Numerics.IAdditiveIdentity<long,long>, System.Numerics.IBinaryInteger<long>, System.Numerics.IBinaryNumber<long>, System.Numerics.IBitwiseOperators<long,long,long>, System.Numerics.IComparisonOperators<long,long,bool>, System.Numerics.IDecrementOperators<long>, System.Numerics.IDivisionOperators<long,long,long>, System.Numerics.IEqualityOperators<long,long,bool>, System.Numerics.IIncrementOperators<long>, System.Numerics.IMinMaxValue<long>, System.Numerics.IModulusOperators<long,long,long>, System.Numerics.IMultiplicativeIdentity<long,long>, System.Numerics.IMultiplyOperators<long,long,long>, System.Numerics.INumber<long>, System.Numerics.INumberBase<long>, System.Numerics.IShiftOperators<long,int,long>, System.Numerics.ISignedNumber<long>, System.Numerics.ISubtractionOperators<long,long,long>, System.Numerics.IUnaryNegationOperators<long,long>, System.Numerics.IUnaryPlusOperators<long,long>

public readonly struct Int64 : IComparable, IComparable<long>, IConvertible, IEquatable<long>, IFormattable

public readonly struct Int64 : IComparable, IComparable<long>, IConvertible, IEquatable<long>, ISpanFormattable

public readonly struct Int64 : IComparable<long>, IConvertible, IEquatable<long>, IParsable<long>, ISpanParsable<long>, System.Numerics.IAdditionOperators<long,long,long>, System.Numerics.IAdditiveIdentity<long,long>, System.Numerics.IBinaryInteger<long>, System.Numerics.IBinaryNumber<long>, System.Numerics.IBitwiseOperators<long,long,long>, System.Numerics.IComparisonOperators<long,long,bool>, System.Numerics.IDecrementOperators<long>, System.Numerics.IDivisionOperators<long,long,long>, System.Numerics.IEqualityOperators<long,long,bool>, System.Numerics.IIncrementOperators<long>, System.Numerics.IMinMaxValue<long>, System.Numerics.IModulusOperators<long,long,long>, System.Numerics.IMultiplicativeIdentity<long,long>, System.Numerics.IMultiplyOperators<long,long,long>, System.Numerics.INumber<long>, System.Numerics.INumberBase<long>, System.Numerics.IShiftOperators<long,int,long>, System.Numerics.ISignedNumber<long>, System.Numerics.ISubtractionOperators<long,long,long>, System.Numerics.IUnaryNegationOperators<long,long>, System.Numerics.IUnaryPlusOperators<long,long>

[System.Serializable]
public struct Int64 : IComparable, IConvertible, IFormattable

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public struct Int64 : IComparable, IComparable<long>, IConvertible, IEquatable<long>, IFormattable

public struct Int64 : IComparable, IComparable<long>, IEquatable<long>, IFormattable

type int64 = struct
    interface IConvertible
    interface IFormattable

type int64 = struct
    interface IConvertible
    interface IFormattable
    interface IParsable<int64>
    interface ISpanFormattable
    interface ISpanParsable<int64>
    interface IUtf8SpanFormattable
    interface IUtf8SpanParsable<int64>
    interface IAdditionOperators<int64, int64, int64>
    interface IAdditiveIdentity<int64, int64>
    interface IBinaryInteger<int64>
    interface IBinaryNumber<int64>
    interface IBitwiseOperators<int64, int64, int64>
    interface IComparisonOperators<int64, int64, bool>
    interface IEqualityOperators<int64, int64, bool>
    interface IDecrementOperators<int64>
    interface IDivisionOperators<int64, int64, int64>
    interface IIncrementOperators<int64>
    interface IModulusOperators<int64, int64, int64>
    interface IMultiplicativeIdentity<int64, int64>
    interface IMultiplyOperators<int64, int64, int64>
    interface INumber<int64>
    interface INumberBase<int64>
    interface ISubtractionOperators<int64, int64, int64>
    interface IUnaryNegationOperators<int64, int64>
    interface IUnaryPlusOperators<int64, int64>
    interface IShiftOperators<int64, int, int64>
    interface IMinMaxValue<int64>
    interface ISignedNumber<int64>

type int64 = struct
    interface IConvertible
    interface ISpanFormattable
    interface IFormattable

type int64 = struct
    interface IConvertible
    interface IFormattable
    interface IParsable<int64>
    interface ISpanFormattable
    interface ISpanParsable<int64>
    interface IAdditionOperators<int64, int64, int64>
    interface IAdditiveIdentity<int64, int64>
    interface IBinaryInteger<int64>
    interface IBinaryNumber<int64>
    interface IBitwiseOperators<int64, int64, int64>
    interface IComparisonOperators<int64, int64, bool>
    interface IEqualityOperators<int64, int64, bool>
    interface IDecrementOperators<int64>
    interface IDivisionOperators<int64, int64, int64>
    interface IIncrementOperators<int64>
    interface IModulusOperators<int64, int64, int64>
    interface IMultiplicativeIdentity<int64, int64>
    interface IMultiplyOperators<int64, int64, int64>
    interface INumber<int64>
    interface INumberBase<int64>
    interface ISubtractionOperators<int64, int64, int64>
    interface IUnaryNegationOperators<int64, int64>
    interface IUnaryPlusOperators<int64, int64>
    interface IShiftOperators<int64, int, int64>
    interface IMinMaxValue<int64>
    interface ISignedNumber<int64>

type int64 = struct
    interface IConvertible
    interface IFormattable
    interface IParsable<int64>
    interface ISpanFormattable
    interface ISpanParsable<int64>
    interface IAdditionOperators<int64, int64, int64>
    interface IAdditiveIdentity<int64, int64>
    interface IBinaryInteger<int64>
    interface IBinaryNumber<int64>
    interface IBitwiseOperators<int64, int64, int64>
    interface IComparisonOperators<int64, int64, bool>
    interface IEqualityOperators<int64, int64, bool>
    interface IDecrementOperators<int64>
    interface IDivisionOperators<int64, int64, int64>
    interface IIncrementOperators<int64>
    interface IModulusOperators<int64, int64, int64>
    interface IMultiplicativeIdentity<int64, int64>
    interface IMultiplyOperators<int64, int64, int64>
    interface INumber<int64>
    interface INumberBase<int64>
    interface ISubtractionOperators<int64, int64, int64>
    interface IUnaryNegationOperators<int64, int64>
    interface IUnaryPlusOperators<int64, int64>
    interface IUtf8SpanFormattable
    interface IUtf8SpanParsable<int64>
    interface IShiftOperators<int64, int, int64>
    interface IMinMaxValue<int64>
    interface ISignedNumber<int64>

[<System.Serializable>]
type int64 = struct
    interface IFormattable
    interface IConvertible

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type int64 = struct
    interface IFormattable
    interface IConvertible

type int64 = struct
    interface IFormattable

Public Structure Int64
Implements IComparable, IComparable(Of Long), IConvertible, IEquatable(Of Long), IFormattable

Public Structure Int64
Implements IAdditionOperators(Of Long, Long, Long), IAdditiveIdentity(Of Long, Long), IBinaryInteger(Of Long), IBinaryNumber(Of Long), IBitwiseOperators(Of Long, Long, Long), IComparable(Of Long), IComparisonOperators(Of Long, Long, Boolean), IConvertible, IDecrementOperators(Of Long), IDivisionOperators(Of Long, Long, Long), IEqualityOperators(Of Long, Long, Boolean), IEquatable(Of Long), IIncrementOperators(Of Long), IMinMaxValue(Of Long), IModulusOperators(Of Long, Long, Long), IMultiplicativeIdentity(Of Long, Long), IMultiplyOperators(Of Long, Long, Long), INumber(Of Long), INumberBase(Of Long), IParsable(Of Long), IShiftOperators(Of Long, Integer, Long), ISignedNumber(Of Long), ISpanParsable(Of Long), ISubtractionOperators(Of Long, Long, Long), IUnaryNegationOperators(Of Long, Long), IUnaryPlusOperators(Of Long, Long), IUtf8SpanParsable(Of Long)

Public Structure Int64
Implements IComparable, IComparable(Of Long), IConvertible, IEquatable(Of Long), ISpanFormattable

Public Structure Int64
Implements IAdditionOperators(Of Long, Long, Long), IAdditiveIdentity(Of Long, Long), IBinaryInteger(Of Long), IBinaryNumber(Of Long), IBitwiseOperators(Of Long, Long, Long), IComparable(Of Long), IComparisonOperators(Of Long, Long, Boolean), IConvertible, IDecrementOperators(Of Long), IDivisionOperators(Of Long, Long, Long), IEqualityOperators(Of Long, Long, Boolean), IEquatable(Of Long), IIncrementOperators(Of Long), IMinMaxValue(Of Long), IModulusOperators(Of Long, Long, Long), IMultiplicativeIdentity(Of Long, Long), IMultiplyOperators(Of Long, Long, Long), INumber(Of Long), INumberBase(Of Long), IParsable(Of Long), IShiftOperators(Of Long, Integer, Long), ISignedNumber(Of Long), ISpanParsable(Of Long), ISubtractionOperators(Of Long, Long, Long), IUnaryNegationOperators(Of Long, Long), IUnaryPlusOperators(Of Long, Long)

Public Structure Int64
Implements IComparable, IConvertible, IFormattable

Public Structure Int64
Implements IComparable, IComparable(Of Long), IEquatable(Of Long), IFormattable

Héritage

Object

ValueType

Int64

Attributs

SerializableAttribute ComVisibleAttribute

Implémente

IComparable IComparable<Int64> IConvertible IEquatable<Int64> IFormattable IComparable<TSelf> IEquatable<TSelf> IParsable<Int64> IParsable<TSelf> ISpanFormattable ISpanParsable<Int64> ISpanParsable<TSelf> IUtf8SpanFormattable IUtf8SpanParsable<Int64> IUtf8SpanParsable<TSelf> IAdditionOperators<Int64,Int64,Int64> IAdditionOperators<TSelf,TSelf,TSelf> IAdditiveIdentity<Int64,Int64> IAdditiveIdentity<TSelf,TSelf> IBinaryInteger<Int64> IBinaryNumber<Int64> IBinaryNumber<TSelf> IBitwiseOperators<Int64,Int64,Int64> IBitwiseOperators<TSelf,TSelf,TSelf> IComparisonOperators<Int64,Int64,Boolean> IComparisonOperators<TSelf,TSelf,Boolean> IDecrementOperators<Int64> IDecrementOperators<TSelf> IDivisionOperators<Int64,Int64,Int64> IDivisionOperators<TSelf,TSelf,TSelf> IEqualityOperators<Int64,Int64,Boolean> IEqualityOperators<TSelf,TOther,TResult> IEqualityOperators<TSelf,TSelf,Boolean> IIncrementOperators<Int64> IIncrementOperators<TSelf> IMinMaxValue<Int64> IModulusOperators<Int64,Int64,Int64> IModulusOperators<TSelf,TSelf,TSelf> IMultiplicativeIdentity<Int64,Int64> IMultiplicativeIdentity<TSelf,TSelf> IMultiplyOperators<Int64,Int64,Int64> IMultiplyOperators<TSelf,TSelf,TSelf> INumber<Int64> INumber<TSelf> INumberBase<Int64> INumberBase<TSelf> IShiftOperators<Int64,Int32,Int64> IShiftOperators<TSelf,Int32,TSelf> ISignedNumber<Int64> ISubtractionOperators<Int64,Int64,Int64> ISubtractionOperators<TSelf,TSelf,TSelf> IUnaryNegationOperators<Int64,Int64> IUnaryNegationOperators<TSelf,TSelf> IUnaryPlusOperators<Int64,Int64> IUnaryPlusOperators<TSelf,TSelf>

Remarques

Int64 est un type valeur immuable qui représente des entiers signés avec des valeurs comprises entre 9 223 372 036 854 775 808 (qui est représenté par la Int64.MinValue constante) à 9 223 372 036 854 775 807 (qui est représenté par la Int64.MaxValue constante). .NET inclut également un type entier 64 bits non signé, UInt64qui représente des valeurs comprises entre 0 et 18 446 744 073 709 551 615.

Instancier une valeur Int64

Vous pouvez instancier une Int64 valeur de plusieurs façons :

• Vous pouvez déclarer une Int64 variable et l’affecter à une valeur entière littérale qui se trouve dans la plage du Int64 type de données. L’exemple suivant déclare deux Int64 variables et leur attribue des valeurs de cette façon.

  long number1 = -64301728;
  long number2 = 255486129307;
  

  let number1 = -64301728L
  let number2 = 255486129307L
  

  Dim number1 As Long = -64301728
  Dim number2 As Long = 255486129307
  

• Vous pouvez affecter la valeur d’un type intégral dont la plage est un sous-ensemble du Int64 type. Il s’agit d’une conversion étendue qui ne nécessite pas d’opérateur de cast en C# ou d’une méthode de conversion en Visual Basic. En F#, seul le Int32 type peut être étendu automatiquement.

  sbyte value1 = 124;
  short value2 = 1618;
  int value3 = Int32.MaxValue;
  
  long number1 = value1;
  long number2 = value2;
  long number3 = value3;
  

  let value1 = 124y
  let value2 = 1618s
  let value3 = Int32.MaxValue
  
  let number1 = int64 value1
  let number2 = int64 value2
  let number3: int64 = value3
  

  Dim value1 As SByte = 124
  Dim value2 As Int16 = 1618
  Dim value3 As Int32 = Int32.MaxValue
  
  Dim number1 As Long = value1
  Dim number2 As Long = value2
  Dim number3 As Long = value3
  

• Vous pouvez affecter la valeur d’un type numérique dont la plage dépasse celle du Int64 type. Il s'agit d'une conversion étroite, donc elle nécessite un opérateur de cast en C# ou F#, et une méthode de conversion en Visual Basic si Option Strict est activé. Si la valeur numérique est un Single, Doubleou Decimal une valeur qui inclut un composant fractionnaire, la gestion de sa partie fractionnaire dépend du compilateur effectuant la conversion. L’exemple suivant effectue des conversions restrictives pour affecter plusieurs valeurs numériques à des Int64 variables.

  ulong ulNumber = 163245617943825;
  try {
     long number1 = (long) ulNumber;
     Console.WriteLine(number1);
  }
  catch (OverflowException) {
     Console.WriteLine($"{ulNumber} is out of range of an Int64.");
  }
  
  double dbl2 = 35901.997;
  try {
     long number2 = (long) dbl2;
     Console.WriteLine(number2);
  }
  catch (OverflowException) {
     Console.WriteLine($"{dbl2} is out of range of an Int64.");
  }
  
  BigInteger bigNumber = (BigInteger) 1.63201978555e30;
  try {
     long number3 = (long) bigNumber;
     Console.WriteLine(number3);
  }
  catch (OverflowException) {
     Console.WriteLine($"{bigNumber} is out of range of an Int64.");
  }
  // The example displays the following output:
  //    163245617943825
  //    35902
  //    1,632,019,785,549,999,969,612,091,883,520 is out of range of an Int64.
  

  let ulNumber = 163245617943825uL
  try
      let number1 = int64 ulNumber
      printfn $"{number1}"
  with :? OverflowException ->
      printfn $"{ulNumber} is out of range of an Int64."
  
  let dbl2 = 35901.997
  try
      let number2 = int64 dbl2
      printfn $"{number2}"
  with :? OverflowException ->
      printfn $"{dbl2} is out of range of an Int64."
  
  let bigNumber = BigInteger 1.63201978555e30
  try
      let number3 = int64 bigNumber
      printfn $"{number3}"
  with :? OverflowException ->
      printfn $"{bigNumber} is out of range of an Int64."
  
  // The example displays the following output:
  //    163245617943825
  //    35902
  //    1,632,019,785,549,999,969,612,091,883,520 is out of range of an Int64.
  

  Dim ulNumber As ULong = 163245617943825
  Try
     Dim number1 As Long = CLng(ulNumber)
     Console.WriteLine(number1)
  Catch e As OverflowException
     Console.WriteLine("{0} is out of range of an Int64.", ulNumber)
  End Try
  
  Dim dbl2 As Double = 35901.997
  Try
     Dim number2 As Long = CLng(dbl2)
     Console.WriteLine(number2)
  Catch e As OverflowException
     Console.WriteLine("{0} is out of range of an Int64.", dbl2)
  End Try
     
  Dim bigNumber As BigInteger = 1.63201978555e30
  Try
     Dim number3 As Long = CLng(bigNumber)
     Console.WriteLine(number3)
  Catch e As OverflowException
     Console.WriteLine("{0:N0} is out of range of an Int64.", bigNumber)
  End Try    
  ' The example displays the following output:
  '    163245617943825
  '    35902
  '    1,632,019,785,549,999,969,612,091,883,520 is out of range of an Int64.
  

• Vous pouvez appeler une méthode de la Convert classe pour convertir n’importe quel type pris en charge en Int64 valeur. Cela est possible, car Int64 prend en charge l’interface IConvertible . L’exemple suivant illustre la conversion d’un tableau de valeurs Decimal vers des valeurs Int64.

  decimal[] values= { Decimal.MinValue, -1034.23m, -12m, 0m, 147m,
                      199.55m, 9214.16m, Decimal.MaxValue };
  long result;
  
  foreach (decimal value in values)
  {
     try {
        result = Convert.ToInt64(value);
        Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                          value.GetType().Name, value,
                          result.GetType().Name, result);
     }
     catch (OverflowException) {
        Console.WriteLine("{0} is outside the range of the Int64 type.",
                          value);
     }
  }
  // The example displays the following output:
  //    -79228162514264337593543950335 is outside the range of the Int64 type.
  //    Converted the Decimal value '-1034.23' to the Int64 value -1034.
  //    Converted the Decimal value '-12' to the Int64 value -12.
  //    Converted the Decimal value '0' to the Int64 value 0.
  //    Converted the Decimal value '147' to the Int64 value 147.
  //    Converted the Decimal value '199.55' to the Int64 value 200.
  //    Converted the Decimal value '9214.16' to the Int64 value 9214.
  //    79228162514264337593543950335 is outside the range of the Int64 type.
  

  let values = 
      [| Decimal.MinValue; -1034.23m; -12m; 0m; 147m
         199.55m; 9214.16m; Decimal.MaxValue |]
  
  for value in values do
      try
          let result = Convert.ToInt64 value
          printfn $"Converted the {value.GetType().Name} value '{value}' to the {result.GetType().Name} value {result}."
      with :? OverflowException ->
          printfn $"{value} is outside the range of the Int64 type."
  // The example displays the following output:
  //    -79228162514264337593543950335 is outside the range of the Int64 type.
  //    Converted the Decimal value '-1034.23' to the Int64 value -1034.
  //    Converted the Decimal value '-12' to the Int64 value -12.
  //    Converted the Decimal value '0' to the Int64 value 0.
  //    Converted the Decimal value '147' to the Int64 value 147.
  //    Converted the Decimal value '199.55' to the Int64 value 200.
  //    Converted the Decimal value '9214.16' to the Int64 value 9214.
  //    79228162514264337593543950335 is outside the range of the Int64 type.
  

  Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                              199.55d, 9214.16d, Decimal.MaxValue }
  Dim result As Long
  
  For Each value As Decimal In values
     Try
        result = Convert.ToInt64(value)
        Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                          value.GetType().Name, value, _
                          result.GetType().Name, result)
     Catch e As OverflowException
        Console.WriteLine("{0} is outside the range of the Int64 type.", _
                          value)
     End Try
  Next
  ' The example displays the following output:
  '    -79228162514264337593543950335 is outside the range of the Int64 type.
  '    Converted the Decimal value '-1034.23' to the Int64 value -1034.
  '    Converted the Decimal value '-12' to the Int64 value -12.
  '    Converted the Decimal value '0' to the Int64 value 0.
  '    Converted the Decimal value '147' to the Int64 value 147.
  '    Converted the Decimal value '199.55' to the Int64 value 200.
  '    Converted the Decimal value '9214.16' to the Int64 value 9214.
  '    79228162514264337593543950335 is outside the range of the Int64 type.
  

• Vous pouvez appeler la méthode Parse ou TryParse pour convertir la représentation en chaîne d’une valeur Int64 en Int64. La chaîne peut contenir des chiffres décimaux ou hexadécimaux. L’exemple suivant illustre l’opération d’analyse à l’aide d’une chaîne décimale et hexadécimale.

  string string1 = "244681903147";
  try {
     long number1 = Int64.Parse(string1);
     Console.WriteLine(number1);
  }
  catch (OverflowException) {
     Console.WriteLine($"'{string1}' is out of range of a 64-bit integer.");
  }
  catch (FormatException) {
     Console.WriteLine($"The format of '{string1}' is invalid.");
  }
  
  string string2 = "F9A3CFF0A";
  try {
     long number2 = Int64.Parse(string2,
                                System.Globalization.NumberStyles.HexNumber);
     Console.WriteLine(number2);
  }
  catch (OverflowException) {
     Console.WriteLine($"'{string2}' is out of range of a 64-bit integer.");
  }
  catch (FormatException) {
     Console.WriteLine($"The format of '{string2}' is invalid.");
  }
  // The example displays the following output:
  //    244681903147
  //    67012198154
  

  let string1 = "244681903147"
  try
      let number1 = Int64.Parse string1
      printfn $"{number1}"
  with
  | :? OverflowException ->
      printfn $"'{string1}' is out of range of a 64-bit integer."
  | :? FormatException ->
      printfn $"The format of '{string1}' is invalid."
  
  let string2 = "F9A3CFF0A"
  try
      let number2 = Int64.Parse(string2, NumberStyles.HexNumber)
      printfn $"{number2}"
  
  with
  | :? OverflowException ->
      printfn $"'{string2}' is out of range of a 64-bit integer."
  | :? FormatException ->
      printfn $"The format of '{string2}' is invalid."
  
  // The example displays the following output:
  //    244681903147
  //    67012198154
  

  Dim string1 As String = "244681903147"
  Try
     Dim number1 As Long = Int64.Parse(string1)
     Console.WriteLine(number1)
  Catch e As OverflowException
     Console.WriteLine("'{0}' is out of range of a 64-bit integer.", string1)
  Catch e As FormatException
     Console.WriteLine("The format of '{0}' is invalid.", string1)
  End Try
  
  Dim string2 As String = "F9A3CFF0A"
  Try
     Dim number2 As Long = Int64.Parse(string2,
                              System.Globalization.NumberStyles.HexNumber)
     Console.WriteLine(number2)
  Catch e As OverflowException
     Console.WriteLine("'{0}' is out of range of a 64-bit integer.", string2)
  Catch e As FormatException
     Console.WriteLine("The format of '{0}' is invalid.", string2)
  End Try
  ' The example displays the following output:
  '    244681903147
  '    67012198154
  

Effectuer des opérations sur les valeurs Int64

Le Int64 type prend en charge les opérations mathématiques standard telles que l’addition, la soustraction, la division, la multiplication, la négation et la négation unaire. Comme les autres types intégraux, le Int64 type prend également en charge les opérateurs bit à bit : AND, OR, XOR, décalage à gauche et décalage à droite.

Vous pouvez utiliser les opérateurs numériques standard pour comparer deux valeurs Int64, ou vous pouvez appeler la méthode CompareTo ou Equals.

Vous pouvez également appeler les membres de la classe pour effectuer un large éventail d’opérations numériques, notamment obtenir la valeur absolue d’un nombre, calculer le quotient et le reste à partir de la Math division intégrale, déterminer la valeur maximale ou minimale de deux entiers longs, obtenir le signe d’un nombre et arrondir un nombre.

Représenter un Int64 en tant que chaîne

Le Int64 type fournit une prise en charge complète des chaînes de format numérique standard et personnalisées. (Pour plus d’informations, consultez Types de mise en forme, chaînes de format numérique standard et chaînes de format numérique personnalisées.)

Pour mettre en forme une Int64 valeur en tant que chaîne intégrale sans zéros non significatifs, vous pouvez appeler la méthode sans ToString() paramètre. En utilisant le spécificateur de format « D », vous pouvez également inclure un nombre spécifié de zéros non significatifs dans la représentation sous forme de chaîne. En utilisant le spécificateur de format « N », vous pouvez inclure des séparateurs de groupe et spécifier le nombre de chiffres décimaux à afficher dans la représentation sous forme de chaîne du nombre. En utilisant le spécificateur de format « X », vous pouvez représenter une Int64 valeur sous forme de chaîne hexadécimale. L’exemple suivant met en forme les éléments d’un tableau de Int64 valeurs de ces quatre façons.

long[] numbers = { -1403, 0, 169, 1483104 };
foreach (var number in numbers)
{
    // Display value using default formatting.
    Console.Write("{0,-8}  -->   ", number.ToString());
    // Display value with 3 digits and leading zeros.
    Console.Write("{0,8:D3}", number);
    // Display value with 1 decimal digit.
    Console.Write("{0,13:N1}", number);
    // Display value as hexadecimal.
    Console.Write("{0,18:X2}", number);
    // Display value with eight hexadecimal digits.
    Console.WriteLine("{0,18:X8}", number);
}
// The example displays the following output:
//    -1403     -->      -1403     -1,403.0  FFFFFFFFFFFFFA85  FFFFFFFFFFFFFA85
//    0         -->        000          0.0                00          00000000
//    169       -->        169        169.0                A9          000000A9
//    1483104   -->    1483104  1,483,104.0            16A160          0016A160

let numbers = [| -1403L; 0L; 169L; 1483104L |]
for number in numbers do
    // Display value using default formatting.
    printf $"{number.ToString(),-8}  -->   "
    // Display value with 3 digits and leading zeros.
    printf $"{number,8:D3}"
    // Display value with 1 decimal digit.
    printf $"{number,13:N1}"
    // Display value as hexadecimal.
    printf $"{number,18:X2}"
    // Display value with eight hexadecimal digits.
    printfn $"{number,18:X8}"

// The example displays the following output:
//    -1403     -->      -1403     -1,403.0  FFFFFFFFFFFFFA85  FFFFFFFFFFFFFA85
//    0         -->        000          0.0                00          00000000
//    169       -->        169        169.0                A9          000000A9
//    1483104   -->    1483104  1,483,104.0            16A160          0016A160

Dim numbers() As Long = { -1403, 0, 169, 1483104 }
For Each number In numbers
   ' Display value using default formatting.
   Console.Write("{0,-8}  -->   ", number.ToString())
   ' Display value with 3 digits and leading zeros.
   Console.Write("{0,8:D3}", number)
   ' Display value with 1 decimal digit.
   Console.Write("{0,13:N1}", number) 
   ' Display value as hexadecimal.
   Console.Write("{0,18:X2}", number)
   ' Display value with eight hexadecimal digits.
   Console.WriteLine("{0,18:X8}", number)
Next   
' The example displays the following output:
'    -1403     -->      -1403     -1,403.0  FFFFFFFFFFFFFA85  FFFFFFFFFFFFFA85
'    0         -->        000          0.0                00          00000000
'    169       -->        169        169.0                A9          000000A9
'    1483104   -->    1483104  1,483,104.0            16A160          0016A160

Vous pouvez également mettre en forme une Int64 valeur en tant que chaîne binaire, octal, décimale ou hexadécimale en appelant la ToString(Int64, Int32) méthode et en fournissant la base comme deuxième paramètre de la méthode. L’exemple suivant appelle cette méthode pour afficher les représentations binaires, octales et hexadécimales d’un tableau de valeurs entières.

long[] numbers = { -146, 11043, 2781913 };
foreach (var number in numbers)
{
    Console.WriteLine($"{number} (Base 10):");
    Console.WriteLine($"   Binary:  {Convert.ToString(number, 2)}");
    Console.WriteLine($"   Octal:   {Convert.ToString(number, 8)}");
    Console.WriteLine($"   Hex:     {Convert.ToString(number, 16)}{Environment.NewLine}");
}
// The example displays the following output:
//    -146 (Base 10):
//       Binary:  1111111111111111111111111111111111111111111111111111111101101110
//       Octal:   1777777777777777777556
//       Hex:     ffffffffffffff6e
//
//    11043 (Base 10):
//       Binary:  10101100100011
//       Octal:   25443
//       Hex:     2b23
//
//    2781913 (Base 10):
//       Binary:  1010100111001011011001
//       Octal:   12471331
//       Hex:     2a72d9

let numbers = [| -146L; 11043L; 2781913L |]
for number in numbers do
    printfn $"{number} (Base 10):"
    printfn $"   Binary:  {Convert.ToString(number, 2)}"
    printfn $"   Octal:   {Convert.ToString(number, 8)}"
    printfn $"   Hex:     {Convert.ToString(number, 16)}\n"

// The example displays the following output:
//    -146 (Base 10):
//       Binary:  1111111111111111111111111111111111111111111111111111111101101110
//       Octal:   1777777777777777777556
//       Hex:     ffffffffffffff6e
//
//    11043 (Base 10):
//       Binary:  10101100100011
//       Octal:   25443
//       Hex:     2b23
//
//    2781913 (Base 10):
//       Binary:  1010100111001011011001
//       Octal:   12471331
//       Hex:     2a72d9

Dim numbers() As Long = { -146, 11043, 2781913 }
For Each number In numbers
   Console.WriteLine("{0} (Base 10):", number)
   Console.WriteLine("   Binary:  {0}", Convert.ToString(number, 2))
   Console.WriteLine("   Octal:   {0}", Convert.ToString(number, 8))
   Console.WriteLine("   Hex:     {0}", Convert.ToString(number, 16))
   Console.WriteLine()
Next      
' The example displays the following output:
'    -146 (Base 10):
'       Binary:  1111111111111111111111111111111111111111111111111111111101101110
'       Octal:   1777777777777777777556
'       Hex:     ffffffffffffff6e
'
'    11043 (Base 10):
'       Binary:  10101100100011
'       Octal:   25443
'       Hex:     2b23
'
'    2781913 (Base 10):
'       Binary:  1010100111001011011001
'       Octal:   12471331
'       Hex:     2a72d9

Utiliser des valeurs entières non décimales sur 64 bits

Outre l’utilisation d’entiers longs individuels sous forme de valeurs décimales, vous pouvez effectuer des opérations au niveau du bit ou utiliser les représentations binaires ou hexadécimales des valeurs entières longues. Int64 les valeurs sont représentées en 63 bits, avec le soixante-quatrième bit utilisé comme bit de signe. Les valeurs positives sont représentées à l'aide de la représentation signe et valeur absolue. Les valeurs négatives sont dans la représentation complémentaire de deux. Il est important de garder à l’esprit lorsque vous effectuez des opérations au niveau binaire sur les valeurs Int64 ou lorsque vous travaillez avec des bits individuels. Pour effectuer une opération numérique, booléenne ou de comparaison sur deux valeurs non décimales, les deux valeurs doivent utiliser la même représentation.

Cohérence de thread

Tous les membres de ce type sont thread safe. Les membres qui semblent modifier l’état de l’instance retournent réellement une nouvelle instance initialisée avec la nouvelle valeur. Comme pour tout autre type, la lecture et l’écriture dans une variable partagée qui contient une instance de ce type doit être protégée par un verrou pour garantir la sécurité des threads.

Voir aussi

• UInt64
• exemple : Utilitaire de mise en forme WinForms .NET Core (C#)
• exemple : Utilitaire de mise en forme WinForms .NET Core (Visual Basic)