Int64 結構
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
表示64位帶正負號的整數。
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
- 繼承
- 屬性
- 實作
-
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>
備註
Int64 是一種不可變的值類型,代表有符號整數,值域從負 9,223,372,036,854,775,808(由 Int64.MinValue 常數表示)到正 9,223,372,036,854,775,807(由 Int64.MaxValue 常數表示)。 .NET 也包含不帶正負號的 64 位整數實值類型,UInt64,代表介於 0 到 18,446,744,073,709,551,615 的值。
具現化 Int64 值
您可以透過數種方式具現化 Int64 值:
您可以宣告 Int64 變數,並將其指派 Int64 數據類型範圍內的常值整數值。 下列範例會宣告兩個 Int64 變數,並以這種方式指派值。
long number1 = -64301728; long number2 = 255486129307;let number1 = -64301728L let number2 = 255486129307LDim number1 As Long = -64301728 Dim number2 As Long = 255486129307您可以指派整數型別的值,其範圍是 Int64 型別的子集。 這是擴大轉換,不需要 C# 中的轉換運算元或 Visual Basic 中的轉換方法。 在 F# 中,只有 Int32 類型能自動擴展。
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 = value3Dim 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您可以指派數值類型的值,其範圍超過 Int64 類型的值。 這是縮小轉換,因此如果
Option Strict開啟的話,在 C# 或 F# 中需要使用轉型運算子,而在 Visual Basic 中需要用到轉換方法。 如果數值是 Single、Double或包含小數位元件的 Decimal 值,其小數部分的處理取決於執行轉換的編譯程式。 下列範例會執行縮小轉換,將數個數值指派給 Int64 變數。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.您可以呼叫 Convert 類別的方法,將任何支援的型別轉換成 Int64 值。 這是可能的,因為 Int64 支援 IConvertible 介面。 下列範例說明如何將 Decimal 值陣列轉換成 Int64 值。
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 $"{value} is outside the range of the Int64 type." // The example displays the following output: // -79228162514264337593543950335 is outside the range of the Int64 type. // Converted the Decimal value '-1034.23' to the Int64 value -1034. // Converted the Decimal value '-12' to the Int64 value -12. // Converted the Decimal value '0' to the Int64 value 0. // Converted the Decimal value '147' to the Int64 value 147. // Converted the Decimal value '199.55' to the Int64 value 200. // Converted the Decimal value '9214.16' to the Int64 value 9214. // 79228162514264337593543950335 is outside the range of the Int64 type.Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _ 199.55d, 9214.16d, Decimal.MaxValue } Dim result As Long For Each value As Decimal In values Try result = Convert.ToInt64(value) Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _ value.GetType().Name, value, _ result.GetType().Name, result) Catch e As OverflowException Console.WriteLine("{0} is outside the range of the Int64 type.", _ value) End Try Next ' The example displays the following output: ' -79228162514264337593543950335 is outside the range of the Int64 type. ' Converted the Decimal value '-1034.23' to the Int64 value -1034. ' Converted the Decimal value '-12' to the Int64 value -12. ' Converted the Decimal value '0' to the Int64 value 0. ' Converted the Decimal value '147' to the Int64 value 147. ' Converted the Decimal value '199.55' to the Int64 value 200. ' Converted the Decimal value '9214.16' to the Int64 value 9214. ' 79228162514264337593543950335 is outside the range of the Int64 type.您可以呼叫 Parse 或 TryParse 方法,將 Int64 值的字串表示轉換成 Int64。 字串可以包含十進位或十六進位數位。 下列範例說明使用十進位和十六進位字串來剖析作業。
string string1 = "244681903147"; try { long number1 = Int64.Parse(string1); Console.WriteLine(number1); } catch (OverflowException) { Console.WriteLine($"'{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 // 67012198154let 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 // 67012198154Dim 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
對 Int64 值執行作業
Int64 類型支援標準數學運算,例如加法、減法、除法、乘法、負數和一元負數。 與其他整數類型一樣,Int64 類型也支援位元運算 AND、OR、XOR、左移和右移運算符。
您可以使用標準數值運算符來比較兩個 Int64 值,或呼叫 CompareTo 或 Equals 方法。
您也可以呼叫 Math 類別的成員來執行廣泛的數值運算,包括取得數位的絕對值、計算整數除數的商數和餘數、判斷兩個長整數的最大值或最小值、取得數位的正負號,以及四捨五入數位。
以字串表示 Int64
Int64 類型提供標準和自定義數值格式字串的完整支援。 (如需詳細資訊,請參閱 格式化類型、標準數值格式字串和 自定義數值格式字串。
若要將 Int64 值格式化為不含前置零的整數位符串,您可以呼叫無參數 ToString() 方法。 藉由使用 「D」 格式規範,您也可以在字串表示中包含指定數目的前置零。 藉由使用 「N」 格式規範,您可以包含群組分隔符,並指定要出現在數位字串表示中的十進位數。 藉由使用 「X」 格式規範,您可以將 Int64 值表示為十六進位字串。 下列範例會以下列四種方式格式化 Int64 值陣列中的元素。
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 $"{number,18:X8}"
// The example displays the following output:
// -1403 --> -1403 -1,403.0 FFFFFFFFFFFFFA85 FFFFFFFFFFFFFA85
// 0 --> 000 0.0 00 00000000
// 169 --> 169 169.0 A9 000000A9
// 1483104 --> 1483104 1,483,104.0 16A160 0016A160
Dim numbers() As Long = { -1403, 0, 169, 1483104 }
For Each number In numbers
' Display value using default formatting.
Console.Write("{0,-8} --> ", number.ToString())
' Display value with 3 digits and leading zeros.
Console.Write("{0,8:D3}", number)
' Display value with 1 decimal digit.
Console.Write("{0,13:N1}", number)
' Display value as hexadecimal.
Console.Write("{0,18:X2}", number)
' Display value with eight hexadecimal digits.
Console.WriteLine("{0,18:X8}", number)
Next
' The example displays the following output:
' -1403 --> -1403 -1,403.0 FFFFFFFFFFFFFA85 FFFFFFFFFFFFFA85
' 0 --> 000 0.0 00 00000000
' 169 --> 169 169.0 A9 000000A9
' 1483104 --> 1483104 1,483,104.0 16A160 0016A160
您也可以呼叫 Int64 方法,並提供基底做為方法的第二個參數,將 ToString(Int64, Int32) 值格式化為二進位、八進位、十六進位或十六進位字串。 下列範例會呼叫這個方法,以顯示整數值陣列的二進位、八進位和十六進位表示法。
long[] numbers = { -146, 11043, 2781913 };
foreach (var number in numbers)
{
Console.WriteLine($"{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
使用非十進制 64 位整數值
除了使用個別長整數做為十進位值之外,您可能還想要執行位運算,或使用長整數值的二進位或十六進位表示法。 Int64 值是以 63 位表示,而使用 64 位做為符號位。 正數是使用符號和大小表示法來表示。 負值是用二進制補數表示的。 在對 Int64 值執行位運算或處理個別位時,請務必記住這點。 若要在任何兩個非十進位值上執行數值、布爾值或比較運算,這兩個值都必須使用相同的表示法。
欄位
| 名稱 | Description |
|---|---|
| MaxValue |
代表 的最大可能值 Int64。 此欄位是常數。 |
| MinValue |
代表 的最小值 Int64。 此欄位是常數。 |
方法
明確介面實作
適用於
執行緒安全性
此類型的所有成員都是安全線程。 看似修改實例狀態的成員實際上會傳回以新值初始化的新實例。 如同任何其他類型,讀取和寫入包含此類型實例的共用變數必須受到鎖定的保護,以確保線程安全性。