Buffer.ByteLength-Methode
Gibt die Anzahl der Bytes im angegebenen Array zurück.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function ByteLength ( _
array As Array _
) As Integer
'Usage
Dim array As Array
Dim returnValue As Integer
returnValue = Buffer.ByteLength(array)
public static int ByteLength (
Array array
)
public:
static int ByteLength (
Array^ array
)
public static int ByteLength (
Array array
)
public static function ByteLength (
array : Array
) : int
Parameter
- array
Ein Array.
Rückgabewert
Die Anzahl der Bytes im Array.
Ausnahmen
| Ausnahmetyp | Bedingung |
|---|---|
array ist NULL (Nothing in Visual Basic). |
|
array ist kein Array von Primitiven. |
Beispiel
Im folgenden Codebeispiel wird veranschaulicht, wie die ByteLength-Methode verwendet wird, um die Anzahl von Bytes in einem Array zurückzugeben.
' Example of the Buffer.ByteLength method.
Imports System
Imports Microsoft.VisualBasic
Module ByteLengthDemo
Const formatter As String = "{0,10}{1,20}{2,9}{3,12}"
Sub ArrayInfo( arr As Array, name As String )
Dim byteLength As Integer = Buffer.ByteLength( arr )
' Display the array name, type, Length, and ByteLength.
Console.WriteLine( formatter, name, arr.GetType, arr.Length, _
byteLength )
End Sub
Sub Main( )
Dim bytes( ) As Byte = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 }
Dim bools( ) As Boolean = { True, False, True, False, True }
Dim chars( ) As Char = { " "c, "$"c, """"c, "A"c, "{"c }
Dim shorts( ) As Short = { 258, 259, 260, 261, 262, 263 }
Dim singles( ) As Single = { 1, 678, 2.37E33, .00415, 8.9 }
Dim doubles( ) As Double = { 2E-22, .003, 4.4E44, 555E55 }
Dim longs( ) As Long = { 1, 10, 100, 1000, 10000, 100000 }
Console.WriteLine( _
"This example of the Buffer.ByteLength( Array ) " & _
vbCrLf & "method generates the following output." & vbCrLf )
Console.WriteLine( formatter, "Array name", "Array type", _
"Length", "ByteLength" )
Console.WriteLine( formatter, "----------", "----------", _
"------", "----------" )
' Display the Length and ByteLength for each array.
ArrayInfo( bytes, "bytes" )
ArrayInfo( bools, "bools" )
ArrayInfo( chars, "chars" )
ArrayInfo( shorts, "shorts" )
ArrayInfo( singles, "singles" )
ArrayInfo( doubles, "doubles" )
ArrayInfo( longs, "longs" )
End Sub
End Module
' This example of the Buffer.ByteLength( Array )
' method generates the following output.
'
' Array name Array type Length ByteLength
' ---------- ---------- ------ ----------
' bytes System.Byte[] 10 10
' bools System.Boolean[] 5 5
' chars System.Char[] 5 10
' shorts System.Int16[] 6 12
' singles System.Single[] 5 20
' doubles System.Double[] 4 32
' longs System.Int64[] 6 48
// Example of the Buffer.ByteLength method.
using System;
class ByteLengthDemo
{
const string formatter = "{0,10}{1,20}{2,9}{3,12}";
public static void ArrayInfo( Array arr, string name )
{
int byteLength = Buffer.ByteLength( arr );
// Display the array name, type, Length, and ByteLength.
Console.WriteLine( formatter, name, arr.GetType( ),
arr.Length, byteLength );
}
public static void Main( )
{
byte[ ] bytes = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
bool[ ] bools = { true, false, true, false, true };
char[ ] chars = { ' ', '$', '\"', 'A', '{' };
short[ ] shorts = { 258, 259, 260, 261, 262, 263 };
float[ ] singles = { 1, 678, 2.37E33F, .00415F, 8.9F };
double[ ] doubles = { 2E-22, .003, 4.4E44, 555E55 };
long[ ] longs = { 1, 10, 100, 1000, 10000, 100000 };
Console.WriteLine(
"This example of the Buffer.ByteLength( Array ) " +
"\nmethod generates the following output.\n" );
Console.WriteLine( formatter, "Array name", "Array type",
"Length", "ByteLength" );
Console.WriteLine( formatter, "----------", "----------",
"------", "----------" );
// Display the Length and ByteLength for each array.
ArrayInfo( bytes, "bytes" );
ArrayInfo( bools, "bools" );
ArrayInfo( chars, "chars" );
ArrayInfo( shorts, "shorts" );
ArrayInfo( singles, "singles" );
ArrayInfo( doubles, "doubles" );
ArrayInfo( longs, "longs" );
}
}
/*
This example of the Buffer.ByteLength( Array )
method generates the following output.
Array name Array type Length ByteLength
---------- ---------- ------ ----------
bytes System.Byte[] 10 10
bools System.Boolean[] 5 5
chars System.Char[] 5 10
shorts System.Int16[] 6 12
singles System.Single[] 5 20
doubles System.Double[] 4 32
longs System.Int64[] 6 48
*/
// Example of the Buffer::ByteLength method.
using namespace System;
void ArrayInfo( Array^ arr, String^ name )
{
int byteLength = Buffer::ByteLength( arr );
// Display the array name, type, Length, and ByteLength.
Console::WriteLine( "{0,10}{1,20}{2,9}{3,12}", name, arr->GetType(), arr->Length, byteLength );
}
int main()
{
array<unsigned char>^bytes = {1,2,3,4,5,6,7,8,9,0};
array<bool>^bools = {true,false,true,false,true};
array<Char>^chars = {' ','$','\"','A','{'};
array<short>^shorts = {258,259,260,261,262,263};
array<float>^singles = {1,678,2.37E33F,.00415F,8.9F};
array<double>^doubles = {2E-22,.003,4.4E44,555E55};
array<long>^longs = {1,10,100,1000,10000,100000};
Console::WriteLine( "This example of the Buffer::ByteLength( Array* ) "
"\nmethod generates the following output.\n" );
Console::WriteLine( "{0,10}{1,20}{2,9}{3,12}", "Array name", "Array type", "Length", "ByteLength" );
Console::WriteLine( "{0,10}{1,20}{2,9}{3,12}", "----------", "----------", "------", "----------" );
// Display the Length and ByteLength for each array.
ArrayInfo( bytes, "bytes" );
ArrayInfo( bools, "bools" );
ArrayInfo( chars, "chars" );
ArrayInfo( shorts, "shorts" );
ArrayInfo( singles, "singles" );
ArrayInfo( doubles, "doubles" );
ArrayInfo( longs, "longs" );
}
/*
This example of the Buffer::ByteLength( Array* )
method generates the following output.
Array name Array type Length ByteLength
---------- ---------- ------ ----------
bytes System.Byte[] 10 10
bools System.Boolean[] 5 5
chars System.Char[] 5 10
shorts System.Int16[] 6 12
singles System.Single[] 5 20
doubles System.Double[] 4 32
longs System.Int32[] 6 24
*/
// Example of the Buffer.ByteLength method.
import System.*;
import System.Console;
class ByteLengthDemo
{
private static String formatter = "{0,10}{1,20}{2,9}{3,12}";
public static void ArrayInfo(Array arr, String name)
{
int byteLength = Buffer.ByteLength(arr);
// Display the array name, type, Length, and ByteLength.
Object objArr[] = new Object [] { name, arr.GetType().ToString(),
(Int32)arr.get_Length(), (Int32)byteLength };
Console.WriteLine(formatter, objArr);
} //ArrayInfo
public static void main(String[] args)
{
ubyte bytes[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
boolean bools[] = { true, false, true, false, true };
char chars[] = { ' ', '$', '"', 'A', '{' };
short shorts[] = { 258, 259, 260, 261, 262, 263 };
float singles[] = { 1F, 678F, 2.37E+33F,0.00415F,8.9F };
double doubles[] = { 2E-22, 0.003, 4.4E+44, 5.55E+57 };
long longs[] = { 1, 10, 100, 1000, 10000, 100000 };
Object objArr1[] = new Object[] { "Array name","Array type", "Length",
"ByteLength" };
Console.WriteLine("This example of the Buffer.ByteLength( Array )\n"
+ "method generates the following output.\n");
Console.WriteLine(formatter, objArr1);
Object objArr2[] = new Object[] { "----------", "----------",
"------", "----------" };
Console.WriteLine(formatter, objArr2);
// Display the Length and ByteLength for each array.
ArrayInfo(bytes, "bytes");
ArrayInfo(bools, "bools");
ArrayInfo(chars, "chars");
ArrayInfo(shorts, "shorts");
ArrayInfo(singles, "singles");
ArrayInfo(doubles, "doubles");
ArrayInfo(longs, "longs");
} //main
} //ByteLengthDemo
/*
This example of the Buffer.ByteLength( Array )
method generates the following output.
Array name Array type Length ByteLength
---------- ---------- ------ ----------
bytes System.Byte[] 10 10
bools System.Boolean[] 5 5
chars System.Char[] 5 10
shorts System.Int16[] 6 12
singles System.Single[] 5 20
doubles System.Double[] 4 32
longs System.Int64[] 6 48
*/
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