BitConverter.ToInt16-Methode
Gibt eine 16-Bit-Ganzzahl mit Vorzeichen zurück, die aus zwei Bytes an der angegebenen Position in einem Bytearray konvertiert wurde.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function ToInt16 ( _
value As Byte(), _
startIndex As Integer _
) As Short
'Usage
Dim value As Byte()
Dim startIndex As Integer
Dim returnValue As Short
returnValue = BitConverter.ToInt16(value, startIndex)
public static short ToInt16 (
byte[] value,
int startIndex
)
public:
static short ToInt16 (
array<unsigned char>^ value,
int startIndex
)
public static short ToInt16 (
byte[] value,
int startIndex
)
public static function ToInt16 (
value : byte[],
startIndex : int
) : short
Parameter
- value
Ein Bytearray.
- startIndex
Die Anfangsposition in value.
Rückgabewert
Eine 16-Bit-Ganzzahl mit Vorzeichen, die beginnend bei startIndex aus zwei 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 2. |
Beispiel
Im folgenden Codebeispiel werden Elemente von Byte-Arrays mithilfe der ToInt16-Methode in Int16-Werte konvertiert.
' Example of the BitConverter.ToInt16 method.
Imports System
Imports Microsoft.VisualBasic
Module BytesToInt16Demo
Const formatter As String = "{0,5}{1,17}{2,10}"
' Convert two Byte array elements to a Short and display it.
Sub BAToInt16( bytes( ) As Byte, index As Integer )
Dim value As Short = BitConverter.ToInt16( bytes, index )
Console.WriteLine( formatter, index, _
BitConverter.ToString( bytes, index, 2 ), value )
End Sub
Sub Main( )
Dim byteArray as Byte( ) = { _
15, 0, 0, 128, 16, 39, 240, 216, 241, 255, 127 }
Console.WriteLine( _
"This example of the BitConverter.ToInt16( Byte( ), " & _
"Integer ) " & vbCrLf & "method generates the " & _
"following output. It converts elements " & vbCrLf & _
"of a Byte array to Short values." & vbCrLf )
Console.WriteLine( "initial Byte array" )
Console.WriteLine( "------------------" )
Console.WriteLine( BitConverter.ToString( byteArray ) )
Console.WriteLine( )
Console.WriteLine( formatter, "index", "array elements", "Short" )
Console.WriteLine( formatter, "-----", "--------------", "-----" )
' Convert Byte array elements to Short values.
BAToInt16( byteArray, 1 )
BAToInt16( byteArray, 0 )
BAToInt16( byteArray, 8 )
BAToInt16( byteArray, 4 )
BAToInt16( byteArray, 6 )
BAToInt16( byteArray, 9 )
BAToInt16( byteArray, 2 )
End Sub
End Module
' This example of the BitConverter.ToInt16( Byte( ), Integer )
' method generates the following output. It converts elements
' of a Byte array to Short values.
'
' initial Byte array
' ------------------
' 0F-00-00-80-10-27-F0-D8-F1-FF-7F
'
' index array elements Short
' ----- -------------- -----
' 1 00-00 0
' 0 0F-00 15
' 8 F1-FF -15
' 4 10-27 10000
' 6 F0-D8 -10000
' 9 FF-7F 32767
' 2 00-80 -32768
// Example of the BitConverter.ToInt16 method.
using System;
class BytesToInt16Demo
{
const string formatter = "{0,5}{1,17}{2,10}";
// Convert two byte array elements to a short and display it.
public static void BAToInt16( byte[ ] bytes, int index )
{
short value = BitConverter.ToInt16( bytes, index );
Console.WriteLine( formatter, index,
BitConverter.ToString( bytes, index, 2 ), value );
}
public static void Main( )
{
byte[ ] byteArray =
{ 15, 0, 0, 128, 16, 39, 240, 216, 241, 255, 127 };
Console.WriteLine(
"This example of the BitConverter.ToInt16( byte[ ], " +
"int ) \nmethod generates the following output. It " +
"converts elements \nof a byte array to short values.\n" );
Console.WriteLine( "initial byte array" );
Console.WriteLine( "------------------" );
Console.WriteLine( BitConverter.ToString( byteArray ) );
Console.WriteLine( );
Console.WriteLine( formatter, "index", "array elements", "short" );
Console.WriteLine( formatter, "-----", "--------------", "-----" );
// Convert byte array elements to short values.
BAToInt16( byteArray, 1 );
BAToInt16( byteArray, 0 );
BAToInt16( byteArray, 8 );
BAToInt16( byteArray, 4 );
BAToInt16( byteArray, 6 );
BAToInt16( byteArray, 9 );
BAToInt16( byteArray, 2 );
}
}
/*
This example of the BitConverter.ToInt16( byte[ ], int )
method generates the following output. It converts elements
of a byte array to short values.
initial byte array
------------------
0F-00-00-80-10-27-F0-D8-F1-FF-7F
index array elements short
----- -------------- -----
1 00-00 0
0 0F-00 15
8 F1-FF -15
4 10-27 10000
6 F0-D8 -10000
9 FF-7F 32767
2 00-80 -32768
*/
// Example of the BitConverter::ToInt16 method.
using namespace System;
// Convert two byte array elements to a short and display it.
void BAToInt16( array<unsigned char>^bytes, int index )
{
short value = BitConverter::ToInt16( bytes, index );
Console::WriteLine( "{0,5}{1,17}{2,10}", index, BitConverter::ToString( bytes, index, 2 ), value );
}
int main()
{
array<unsigned char>^byteArray = {15,0,0,128,16,39,240,216,241,255,127};
Console::WriteLine( "This example of the BitConverter::ToInt16( unsigned "
"char[ ], int ) \nmethod generates the following output. It "
"converts elements of a \nbyte array to short values.\n" );
Console::WriteLine( "initial byte array" );
Console::WriteLine( "------------------" );
Console::WriteLine( BitConverter::ToString( byteArray ) );
Console::WriteLine();
Console::WriteLine( "{0,5}{1,17}{2,10}", "index", "array elements", "short" );
Console::WriteLine( "{0,5}{1,17}{2,10}", "-----", "--------------", "-----" );
// Convert byte array elements to short values.
BAToInt16( byteArray, 1 );
BAToInt16( byteArray, 0 );
BAToInt16( byteArray, 8 );
BAToInt16( byteArray, 4 );
BAToInt16( byteArray, 6 );
BAToInt16( byteArray, 9 );
BAToInt16( byteArray, 2 );
}
/*
This example of the BitConverter::ToInt16( unsigned char[ ], int )
method generates the following output. It converts elements of a
byte array to short values.
initial byte array
------------------
0F-00-00-80-10-27-F0-D8-F1-FF-7F
index array elements short
----- -------------- -----
1 00-00 0
0 0F-00 15
8 F1-FF -15
4 10-27 10000
6 F0-D8 -10000
9 FF-7F 32767
2 00-80 -32768
*/
// Example of the BitConverter.ToInt16 method.
import System.*;
class BytesToInt16Demo
{
private static String formatter = "{0,5}{1,17}{2,10}";
// Convert two byte array elements to a short and display it.
public static void BAToInt16(ubyte bytes[], int index)
{
short value = BitConverter.ToInt16(bytes, index);
Console.WriteLine(formatter,(Int32)index,
BitConverter.ToString(bytes, index, 2), (Int16)value);
} //BAToInt16
public static void main(String[] args)
{
ubyte byteArray[] = { 15, 0, 0, 128, 16, 39, 240, 216, 241, 255, 127 };
Console.WriteLine("This example of the "
+ "BitConverter.ToInt16( byte[ ], int ) \n"
+ "method generates the following output. "
+ "It converts elements \nof a byte array to short values.\n");
Console.WriteLine("initial byte array");
Console.WriteLine("------------------");
Console.WriteLine(BitConverter.ToString(byteArray));
Console.WriteLine();
Console.WriteLine(formatter, "index", "array elements", "short");
Console.WriteLine(formatter, "-----", "--------------", "-----");
// Convert byte array elements to short values.
BAToInt16(byteArray, 1);
BAToInt16(byteArray, 0);
BAToInt16(byteArray, 8);
BAToInt16(byteArray, 4);
BAToInt16(byteArray, 6);
BAToInt16(byteArray, 9);
BAToInt16(byteArray, 2);
} //main
} //BytesToInt16Demo
/*
This example of the BitConverter.ToInt16( byte[ ], int )
method generates the following output. It converts elements
of a byte array to short values.
initial byte array
------------------
0F-00-00-80-10-27-F0-D8-F1-FF-7F
index array elements short
----- -------------- -----
1 00-00 0
0 0F-00 15
8 F1-FF -15
4 10-27 10000
6 F0-D8 -10000
9 FF-7F 32767
2 00-80 -32768
*/
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
Int16