BitConverter.ToInt64 Methode

Definitie

Naamruimte:
System
Assembly's:
netstandard.dll, System.Runtime.dll
Assembly:
System.Runtime.Extensions.dll
Assembly:
netstandard.dll
Assembly's:
mscorlib.dll, System.Runtime.Extensions.dll
Assembly:
mscorlib.dll

Overloads

Name Description
ToInt64(ReadOnlySpan<Byte>)

Converteert een bytespanne met het kenmerk Alleen-lezen naar een 64-bits geheel getal dat is ondertekend.
ToInt64(Byte[], Int32)

Retourneert een 64-bits geheel getal dat is geconverteerd van acht bytes op een opgegeven positie in een bytematrix.

ToInt64(ReadOnlySpan<Byte>)

Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs

Converteert een bytespanne met het kenmerk Alleen-lezen naar een 64-bits geheel getal dat is ondertekend.

public:
 static long ToInt64(ReadOnlySpan<System::Byte> value);
public static long ToInt64(ReadOnlySpan<byte> value);
static member ToInt64 : ReadOnlySpan<byte> -> int64
Public Shared Function ToInt64 (value As ReadOnlySpan(Of Byte)) As Long

Parameters

value
ReadOnlySpan<Byte>

Een alleen-lezen periode met de bytes die u wilt converteren.

Retouren

Int64

Een 64-bits ondertekend geheel getal dat de geconverteerde bytes vertegenwoordigt.

Uitzonderingen

ArgumentOutOfRangeException

De lengte is value kleiner dan 8.

Van toepassing op

ToInt64(Byte[], Int32)

Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs
Bron:
BitConverter.cs

Retourneert een 64-bits geheel getal dat is geconverteerd van acht bytes op een opgegeven positie in een bytematrix.

public:
 static long ToInt64(cli::array <System::Byte> ^ value, int startIndex);
public static long ToInt64(byte[] value, int startIndex);
static member ToInt64 : byte[] * int -> int64
Public Shared Function ToInt64 (value As Byte(), startIndex As Integer) As Long

Parameters

value
Byte[]

Een matrix van bytes die de acht bytes bevat die moeten worden geconverteerd.

startIndex
Int32

De beginpositie binnen value.

Retouren

Int64

Een 64-bits geheel getal dat is gevormd door acht bytes vanaf startIndex.

Uitzonderingen

ArgumentException

startIndex is groter dan of gelijk aan de lengte van value min 7 en is kleiner dan of gelijk aan de lengte van value min 1.

ArgumentNullException

value is null.

ArgumentOutOfRangeException

startIndex is kleiner dan nul of groter dan de lengte van value min 1.

Voorbeelden

In het volgende codevoorbeeld worden elementen van Byte matrices geconverteerd naar Int64 waarden met de ToInt64 methode.

// Example of the BitConverter.ToInt64 method.
using System;

class BytesToInt64Demo
{
    const string formatter = "{0,5}{1,27}{2,24}";

    // Convert eight byte array elements to a long and display it.
    public static void BAToInt64( byte[ ] bytes, int index )
    {
        long value = BitConverter.ToInt64( bytes, index );

        Console.WriteLine( formatter, index,
            BitConverter.ToString( bytes, index, 8 ), value );
    }

    // Display a byte array, using multiple lines if necessary.
    public static void WriteMultiLineByteArray( byte[ ] bytes )
    {
        const int rowSize = 20;
        int iter;

        Console.WriteLine( "initial byte array" );
        Console.WriteLine( "------------------" );

        for( iter = 0; iter < bytes.Length - rowSize; iter += rowSize )
        {
            Console.Write(
                BitConverter.ToString( bytes, iter, rowSize ) );
            Console.WriteLine( "-" );
        }

        Console.WriteLine( BitConverter.ToString( bytes, iter ) );
        Console.WriteLine( );
    }

    public static void Main( )
    {
        byte[ ] byteArray = {
              0,  54, 101, 196, 255, 255, 255, 255,   0,   0,
              0,   0,   0,   0,   0,   0, 128,   0, 202, 154,
             59,   0,   0,   0,   0,   1,   0,   0,   0,   0,
            255, 255, 255, 255,   1,   0,   0, 255, 255, 255,
            255, 255, 255, 255, 127,  86,  85,  85,  85,  85,
             85, 255, 255, 170, 170, 170, 170, 170, 170,   0,
              0, 100, 167, 179, 182, 224,  13,   0,   0, 156,
             88,  76,  73,  31, 242 };

        Console.WriteLine(
            "This example of the BitConverter.ToInt64( byte[ ], " +
            "int ) \nmethod generates the following output. It " +
            "converts elements \nof a byte array to long values.\r\n" );

        WriteMultiLineByteArray( byteArray );

        Console.WriteLine( formatter, "index", "array elements", "long" );
        Console.WriteLine( formatter, "-----", "--------------", "----" );

        // Convert byte array elements to long values.
        BAToInt64( byteArray, 8 );
        BAToInt64( byteArray, 5 );
        BAToInt64( byteArray, 34 );
        BAToInt64( byteArray, 17 );
        BAToInt64( byteArray, 0 );
        BAToInt64( byteArray, 21 );
        BAToInt64( byteArray, 26 );
        BAToInt64( byteArray, 53 );
        BAToInt64( byteArray, 45 );
        BAToInt64( byteArray, 59 );
        BAToInt64( byteArray, 67 );
        BAToInt64( byteArray, 37 );
        BAToInt64( byteArray, 9 );
    }
}

/*
This example of the BitConverter.ToInt64( byte[ ], int )
method generates the following output. It converts elements
of a byte array to long values.

initial byte array
------------------
00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A-
3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF-
FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00-
00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2

index             array elements                    long
-----             --------------                    ----
    8    00-00-00-00-00-00-00-00                       0
    5    FF-FF-FF-00-00-00-00-00                16777215
   34    01-00-00-FF-FF-FF-FF-FF               -16777215
   17    00-CA-9A-3B-00-00-00-00              1000000000
    0    00-36-65-C4-FF-FF-FF-FF             -1000000000
   21    00-00-00-00-01-00-00-00              4294967296
   26    00-00-00-00-FF-FF-FF-FF             -4294967296
   53    AA-AA-AA-AA-AA-AA-00-00         187649984473770
   45    56-55-55-55-55-55-FF-FF        -187649984473770
   59    00-00-64-A7-B3-B6-E0-0D     1000000000000000000
   67    00-00-9C-58-4C-49-1F-F2    -1000000000000000000
   37    FF-FF-FF-FF-FF-FF-FF-7F     9223372036854775807
    9    00-00-00-00-00-00-00-80    -9223372036854775808
*/

open System

let print obj1 obj2 obj3 = printfn $"{obj1,5}{obj2,27}{obj3,24}"

// Convert eight byte array elements to a long and display it.
let BAToInt64 bytes index =
    let value = BitConverter.ToInt64(bytes, index)

    print index (BitConverter.ToString(bytes, index, 8)) value

// Display a byte array, using multiple lines if necessary.
let writeMultiLineByteArray (bytes: byte []) =
    let rowSize = 20

    printfn "initial byte array"
    printfn "------------------"

    let mutable iter = 0
    for i in 0 .. rowSize .. (bytes.Length - rowSize - 1) do
        printfn $"{BitConverter.ToString(bytes, i, rowSize)}-"
        iter <- i
    printfn $"{BitConverter.ToString(bytes, iter + rowSize)}"

let byteArray =
    [| 0uy; 54uy; 101uy; 196uy; 255uy; 255uy; 255uy; 255uy; 0uy; 0uy
       0uy; 0uy; 0uy; 0uy; 0uy; 0uy; 128uy; 0uy; 202uy; 154uy
       59uy; 0uy; 0uy; 0uy; 0uy; 1uy; 0uy; 0uy; 0uy; 0uy
       255uy; 255uy; 255uy; 255uy; 1uy; 0uy; 0uy; 255uy; 255uy; 255uy
       255uy; 255uy; 255uy; 255uy; 127uy; 86uy; 85uy; 85uy; 85uy; 85uy
       85uy; 255uy; 255uy; 170uy; 170uy; 170uy; 170uy; 170uy; 170uy; 0uy
       0uy; 100uy; 167uy; 179uy; 182uy; 224uy; 13uy; 0uy; 0uy; 156uy
       88uy; 76uy; 73uy; 31uy; 242uy |]

printfn "This example of the BitConverter.ToInt64(byte [], int) \nmethod generates the following output. It converts elements \nof a byte array to long values.\r\n"

writeMultiLineByteArray byteArray

print "index" "array elements" "long"
print "-----" "--------------" "----"

// Convert byte array elements to long values.
BAToInt64 byteArray 8
BAToInt64 byteArray 5
BAToInt64 byteArray 34
BAToInt64 byteArray 17
BAToInt64 byteArray 0
BAToInt64 byteArray 21
BAToInt64 byteArray 26
BAToInt64 byteArray 53
BAToInt64 byteArray 45
BAToInt64 byteArray 59
BAToInt64 byteArray 67
BAToInt64 byteArray 37
BAToInt64 byteArray 9


// This example of the BitConverter.ToInt64( byte[ ], int )
// method generates the following output. It converts elements
// of a byte array to long values.
//
// initial byte array
// ------------------
// 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A-
// 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF-
// FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00-
// 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2
//
// index             array elements                    long
// -----             --------------                    ----
//     8    00-00-00-00-00-00-00-00                       0
//     5    FF-FF-FF-00-00-00-00-00                16777215
//    34    01-00-00-FF-FF-FF-FF-FF               -16777215
//    17    00-CA-9A-3B-00-00-00-00              1000000000
//     0    00-36-65-C4-FF-FF-FF-FF             -1000000000
//    21    00-00-00-00-01-00-00-00              4294967296
//    26    00-00-00-00-FF-FF-FF-FF             -4294967296
//    53    AA-AA-AA-AA-AA-AA-00-00         187649984473770
//    45    56-55-55-55-55-55-FF-FF        -187649984473770
//    59    00-00-64-A7-B3-B6-E0-0D     1000000000000000000
//    67    00-00-9C-58-4C-49-1F-F2    -1000000000000000000
//    37    FF-FF-FF-FF-FF-FF-FF-7F     9223372036854775807
//     9    00-00-00-00-00-00-00-80    -9223372036854775808

' Example of the BitConverter.ToInt64 method.
Module BytesToInt64Demo

    Const formatter As String = "{0,5}{1,27}{2,24}"
 
    ' Convert eight Byte array elements to a Long and display it.
    Sub BAToInt64( bytes( ) As Byte, index As Integer )

        Dim value As Long = BitConverter.ToInt64( bytes, index )

        Console.WriteLine( formatter, index, _
            BitConverter.ToString( bytes, index, 8 ), value )
    End Sub 

    ' Display a Byte array, using multiple lines if necessary.
    Sub WriteMultiLineByteArray( bytes( ) As Byte )
       
        Const rowSize As Integer = 20 
        Dim iter As Integer

        Console.WriteLine( "initial Byte array" )
        Console.WriteLine( "------------------" )

        For iter = 0 To bytes.Length - rowSize - 1 Step rowSize
            Console.Write( _
                BitConverter.ToString( bytes, iter, rowSize ) )
            Console.WriteLine( "-" )
        Next iter

        Console.WriteLine( BitConverter.ToString( bytes, iter ) )
        Console.WriteLine( )
    End Sub

    Sub Main( )
        Dim byteArray as Byte( ) = { _
              0,  54, 101, 196, 255, 255, 255, 255,   0,   0, _
              0,   0,   0,   0,   0,   0, 128,   0, 202, 154, _
             59,   0,   0,   0,   0,   1,   0,   0,   0,   0, _
            255, 255, 255, 255,   1,   0,   0, 255, 255, 255, _
            255, 255, 255, 255, 127,  86,  85,  85,  85,  85, _
             85, 255, 255, 170, 170, 170, 170, 170, 170,   0, _
              0, 100, 167, 179, 182, 224,  13,   0,   0, 156, _
             88,  76,  73,  31, 242 }

        Console.WriteLine( _
            "This example of the BitConverter.ToInt64( Byte( ), " & _
            "Integer ) " & vbCrLf & "method generates the " & _
            "following output. It converts elements " & vbCrLf & _
            "of a Byte array to Long values." & vbCrLf )

        WriteMultiLineByteArray( byteArray )

        Console.WriteLine( formatter, "index", "array elements", _
            "Long" )
        Console.WriteLine( formatter, "-----", "--------------", _
            "----" )
          
        ' Convert Byte array elements to Long values.
        BAToInt64( byteArray, 8 )
        BAToInt64( byteArray, 5 )
        BAToInt64( byteArray, 34 )
        BAToInt64( byteArray, 17 )
        BAToInt64( byteArray, 0 )
        BAToInt64( byteArray, 21 )
        BAToInt64( byteArray, 26 )
        BAToInt64( byteArray, 53 )
        BAToInt64( byteArray, 45 )
        BAToInt64( byteArray, 59 )
        BAToInt64( byteArray, 67 )
        BAToInt64( byteArray, 37 )
        BAToInt64( byteArray, 9 )
    End Sub 
End Module

' This example of the BitConverter.ToInt64( Byte( ), Integer )
' method generates the following output. It converts elements
' of a Byte array to Long values.
' 
' initial Byte array
' ------------------
' 00-36-65-C4-FF-FF-FF-FF-00-00-00-00-00-00-00-00-80-00-CA-9A-
' 3B-00-00-00-00-01-00-00-00-00-FF-FF-FF-FF-01-00-00-FF-FF-FF-
' FF-FF-FF-FF-7F-56-55-55-55-55-55-FF-FF-AA-AA-AA-AA-AA-AA-00-
' 00-64-A7-B3-B6-E0-0D-00-00-9C-58-4C-49-1F-F2
' 
' index             array elements                    Long
' -----             --------------                    ----
'     8    00-00-00-00-00-00-00-00                       0
'     5    FF-FF-FF-00-00-00-00-00                16777215
'    34    01-00-00-FF-FF-FF-FF-FF               -16777215
'    17    00-CA-9A-3B-00-00-00-00              1000000000
'     0    00-36-65-C4-FF-FF-FF-FF             -1000000000
'    21    00-00-00-00-01-00-00-00              4294967296
'    26    00-00-00-00-FF-FF-FF-FF             -4294967296
'    53    AA-AA-AA-AA-AA-AA-00-00         187649984473770
'    45    56-55-55-55-55-55-FF-FF        -187649984473770
'    59    00-00-64-A7-B3-B6-E0-0D     1000000000000000000
'    67    00-00-9C-58-4C-49-1F-F2    -1000000000000000000
'    37    FF-FF-FF-FF-FF-FF-FF-7F     9223372036854775807
'     9    00-00-00-00-00-00-00-80    -9223372036854775808

Opmerkingen

De ToInt64 methode converteert de bytes van index startIndex naar startIndex + 7 naar een Int64 waarde. De volgorde van bytes in de matrix moet de endianiteit van de architectuur van het computersysteem weerspiegelen. Zie de sectie Opmerkingen van het BitConverter klasonderwerp voor meer informatie.

Zie ook

Van toepassing op