BitConverter.ToUInt64-Methode
Gibt eine vorzeichenlose 64-Bit-Ganzzahl zurück, die aus acht Bytes an der angegebenen Position in einem Bytearray konvertiert wurde.
Diese Methode ist nicht CLS-kompatibel.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<CLSCompliantAttribute(False)> _
Public Shared Function ToUInt64 ( _
value As Byte(), _
startIndex As Integer _
) As ULong
'Usage
Dim value As Byte()
Dim startIndex As Integer
Dim returnValue As ULong
returnValue = BitConverter.ToUInt64(value, startIndex)
[CLSCompliantAttribute(false)]
public static ulong ToUInt64 (
byte[] value,
int startIndex
)
[CLSCompliantAttribute(false)]
public:
static usigned long long ToUInt64 (
array<unsigned char>^ value,
int startIndex
)
/** @attribute CLSCompliantAttribute(false) */
public static UInt64 ToUInt64 (
byte[] value,
int startIndex
)
CLSCompliantAttribute(false)
public static function ToUInt64 (
value : byte[],
startIndex : int
) : ulong
Parameter
- value
Ein Bytearray.
- startIndex
Die Anfangsposition in value.
Rückgabewert
Eine vorzeichenlose 64-Bit-Ganzzahl, die beginnend bei startIndex aus acht Bytes gebildet wird.
Ausnahmen
| Ausnahmetyp | Bedingung |
|---|---|
value ist NULL (Nothing in Visual Basic). |
|
startIndex ist kleiner als 0 (null) oder größer als die Länge von value minus 8. |
Beispiel
Im folgenden Codebeispiel werden Elemente von Byte-Arrays mithilfe der ToUInt64-Methode in UInt64-Werte konvertiert.
' Example of the BitConverter.ToUInt64 method.
Imports System
Imports Microsoft.VisualBasic
Module BytesToUInt64Demo
Const formatter As String = "{0,5}{1,27}{2,24}"
' Convert eight Byte array elements to a UInt64 and display it.
Sub BAToUInt64( bytes( ) As Byte, index As Integer )
Dim value As UInt64 = BitConverter.ToUInt64( 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( ) = { _
255, 255, 255, 0, 0, 0, 0, 0, 0, 0, _
0, 1, 0, 0, 0, 100, 167, 179, 182, 224, _
13, 0, 202, 154, 59, 0, 0, 0, 0, 170, _
170, 170, 170, 170, 170, 0, 0, 232, 137, 4, _
35, 199, 138, 255, 255, 255, 255, 255, 255, 255, _
255, 127 }
Console.WriteLine( _
"This example of the BitConverter.ToUInt64( Byte( ), " & _
"Integer ) " & vbCrLf & "method generates the " & _
"following output. It converts elements " & vbCrLf & _
"of a Byte array to UInt64 values." & vbCrLf )
WriteMultiLineByteArray( byteArray )
Console.WriteLine( formatter, "index", "array elements", _
"UInt64" )
Console.WriteLine( formatter, "-----", "--------------", _
"------" )
' Convert Byte array elements to UInt64 values.
BAToUInt64( byteArray, 3 )
BAToUInt64( byteArray, 0 )
BAToUInt64( byteArray, 21 )
BAToUInt64( byteArray, 7 )
BAToUInt64( byteArray, 29 )
BAToUInt64( byteArray, 13 )
BAToUInt64( byteArray, 35 )
BAToUInt64( byteArray, 44 )
BAToUInt64( byteArray, 43 )
End Sub
End Module
' This example of the BitConverter.ToUInt64( Byte( ), Integer )
' method generates the following output. It converts elements
' of a Byte array to UInt64 values.
'
' initial Byte array
' ------------------
' FF-FF-FF-00-00-00-00-00-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
' 0D-00-CA-9A-3B-00-00-00-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
' 23-C7-8A-FF-FF-FF-FF-FF-FF-FF-FF-7F
'
' index array elements UInt64
' ----- -------------- ------
' 3 00-00-00-00-00-00-00-00 0
' 0 FF-FF-FF-00-00-00-00-00 16777215
' 21 00-CA-9A-3B-00-00-00-00 1000000000
' 7 00-00-00-00-01-00-00-00 4294967296
' 29 AA-AA-AA-AA-AA-AA-00-00 187649984473770
' 13 00-00-64-A7-B3-B6-E0-0D 1000000000000000000
' 35 00-00-E8-89-04-23-C7-8A 10000000000000000000
' 44 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807
' 43 FF-FF-FF-FF-FF-FF-FF-FF 18446744073709551615
// Example of the BitConverter.ToUInt64 method.
using System;
class BytesToUInt64Demo
{
const string formatter = "{0,5}{1,27}{2,24}";
// Convert eight byte array elements to a ulong and display it.
public static void BAToUInt64( byte[ ] bytes, int index )
{
ulong value = BitConverter.ToUInt64( 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 = {
255, 255, 255, 0, 0, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, 100, 167, 179, 182, 224,
13, 0, 202, 154, 59, 0, 0, 0, 0, 170,
170, 170, 170, 170, 170, 0, 0, 232, 137, 4,
35, 199, 138, 255, 255, 255, 255, 255, 255, 255,
255, 127 };
Console.WriteLine(
"This example of the BitConverter.ToUInt64( byte[ ], " +
"int ) \nmethod generates the following output. It " +
"converts elements \nof a byte array to ulong values.\n" );
WriteMultiLineByteArray( byteArray );
Console.WriteLine( formatter, "index", "array elements",
"ulong" );
Console.WriteLine( formatter, "-----", "--------------",
"------" );
// Convert byte array elements to ulong values.
BAToUInt64( byteArray, 3 );
BAToUInt64( byteArray, 0 );
BAToUInt64( byteArray, 21 );
BAToUInt64( byteArray, 7 );
BAToUInt64( byteArray, 29 );
BAToUInt64( byteArray, 13 );
BAToUInt64( byteArray, 35 );
BAToUInt64( byteArray, 44 );
BAToUInt64( byteArray, 43 );
}
}
/*
This example of the BitConverter.ToUInt64( byte[ ], int )
method generates the following output. It converts elements
of a byte array to ulong values.
initial byte array
------------------
FF-FF-FF-00-00-00-00-00-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
0D-00-CA-9A-3B-00-00-00-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
23-C7-8A-FF-FF-FF-FF-FF-FF-FF-FF-7F
index array elements ulong
----- -------------- ------
3 00-00-00-00-00-00-00-00 0
0 FF-FF-FF-00-00-00-00-00 16777215
21 00-CA-9A-3B-00-00-00-00 1000000000
7 00-00-00-00-01-00-00-00 4294967296
29 AA-AA-AA-AA-AA-AA-00-00 187649984473770
13 00-00-64-A7-B3-B6-E0-0D 1000000000000000000
35 00-00-E8-89-04-23-C7-8A 10000000000000000000
44 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807
43 FF-FF-FF-FF-FF-FF-FF-FF 18446744073709551615
*/
// Example of the BitConverter::ToUInt64 method.
using namespace System;
// Convert eight byte array elements to an unsigned __int64 value and
// display it.
void BAToUInt64( array<unsigned char>^bytes, int index )
{
unsigned __int64 value = BitConverter::ToUInt64( bytes, index );
Console::WriteLine( "{0,5}{1,27}{2,24}", index, BitConverter::ToString( bytes, index, 8 ), value );
}
// Display a byte array, using multiple lines if necessary.
void WriteMultiLineByteArray( array<unsigned char>^bytes )
{
const int rowSize = 20;
int iter;
Console::WriteLine( "initial unsigned char 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();
}
int main()
{
array<unsigned char>^byteArray = {255,255,255,0,0,0,0,0,0,0,0,1,0,0,0,100,167,179,182,224,13,0,202,154,59,0,0,0,0,170,170,170,170,170,170,0,0,232,137,4,35,199,138,255,255,255,255,255,255,255,255,127};
Console::WriteLine( "This example of the BitConverter::ToUInt64( unsigned "
"char[ ], int ) \nmethod generates the following output. It "
"converts elements of a \nbyte array to unsigned __int64 "
"values.\n" );
WriteMultiLineByteArray( byteArray );
Console::WriteLine( "{0,5}{1,27}{2,24}", "index", "array elements", "unsigned __int64" );
Console::WriteLine( "{0,5}{1,27}{2,24}", "-----", "--------------", "----------------" );
// Convert byte array elements to unsigned __int64 values.
BAToUInt64( byteArray, 3 );
BAToUInt64( byteArray, 0 );
BAToUInt64( byteArray, 21 );
BAToUInt64( byteArray, 7 );
BAToUInt64( byteArray, 29 );
BAToUInt64( byteArray, 13 );
BAToUInt64( byteArray, 35 );
BAToUInt64( byteArray, 44 );
BAToUInt64( byteArray, 43 );
}
/*
This example of the BitConverter::ToUInt64( unsigned char[ ], int )
method generates the following output. It converts elements of a
byte array to unsigned __int64 values.
initial unsigned char array
---------------------------
FF-FF-FF-00-00-00-00-00-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
0D-00-CA-9A-3B-00-00-00-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
23-C7-8A-FF-FF-FF-FF-FF-FF-FF-FF-7F
index array elements unsigned __int64
----- -------------- ----------------
3 00-00-00-00-00-00-00-00 0
0 FF-FF-FF-00-00-00-00-00 16777215
21 00-CA-9A-3B-00-00-00-00 1000000000
7 00-00-00-00-01-00-00-00 4294967296
29 AA-AA-AA-AA-AA-AA-00-00 187649984473770
13 00-00-64-A7-B3-B6-E0-0D 1000000000000000000
35 00-00-E8-89-04-23-C7-8A 10000000000000000000
44 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807
43 FF-FF-FF-FF-FF-FF-FF-FF 18446744073709551615
*/
// Example of the BitConverter.ToUInt64 method.
import System.*;
class BytesToUInt64Demo
{
private static String formatter = "{0,5}{1,27}{2,24}";
// Convert eight byte array elements to a ulong and display it.
public static void BAToUInt64(ubyte bytes[], int index)
{
UInt64 value = BitConverter.ToUInt64(bytes, index);
Console.WriteLine(formatter, (Int32)index,
BitConverter.ToString(bytes, index, 8), (UInt64)value);
} //BAToUInt64
// Display a byte array, using multiple lines if necessary.
public static void WriteMultiLineByteArray(ubyte[] bytes)
{
final 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();
} //WriteMultiLineByteArray
public static void main(String[] args)
{
ubyte byteArray[] = {
255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
0, 100, 167, 179, 182, 224, 13, 0, 202, 154, 59,
0, 0, 0, 0, 170, 170, 170, 170, 170, 170, 0, 0,
232, 137, 4, 35, 199, 138, 255, 255, 255, 255,
255, 255, 255, 255, 127
};
Console.WriteLine("This example of the "
+ "BitConverter.ToUInt64( byte[ ], int ) \n"
+ "method generates the following output. "
+ "It converts elements \nof a byte array to ulong values.\n");
WriteMultiLineByteArray(byteArray);
Console.WriteLine(formatter, "index", "array elements", "ulong");
Console.WriteLine(formatter, "-----", "--------------", "------");
// Convert byte array elements to ulong values.
BAToUInt64(byteArray, 3);
BAToUInt64(byteArray, 0);
BAToUInt64(byteArray, 21);
BAToUInt64(byteArray, 7);
BAToUInt64(byteArray, 29);
BAToUInt64(byteArray, 13);
BAToUInt64(byteArray, 35);
BAToUInt64(byteArray, 44);
BAToUInt64(byteArray, 43);
} //main
} //BytesToUInt64Demo
/*
This example of the BitConverter.ToUInt64( byte[ ], int )
method generates the following output. It converts elements
of a byte array to ulong values.
initial byte array
------------------
FF-FF-FF-00-00-00-00-00-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
0D-00-CA-9A-3B-00-00-00-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
23-C7-8A-FF-FF-FF-FF-FF-FF-FF-FF-7F
index array elements ulong
----- -------------- ------
3 00-00-00-00-00-00-00-00 0
0 FF-FF-FF-00-00-00-00-00 16777215
21 00-CA-9A-3B-00-00-00-00 1000000000
7 00-00-00-00-01-00-00-00 4294967296
29 AA-AA-AA-AA-AA-AA-00-00 187649984473770
13 00-00-64-A7-B3-B6-E0-0D 1000000000000000000
35 00-00-E8-89-04-23-C7-8A 10000000000000000000
44 FF-FF-FF-FF-FF-FF-FF-7F 9223372036854775807
43 FF-FF-FF-FF-FF-FF-FF-FF 18446744073709551615
*/
Plattformen
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
.NET Compact Framework
Unterstützt in: 2.0, 1.0
Siehe auch
Referenz
BitConverter-Klasse
BitConverter-Member
System-Namespace
UInt64