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BitConverter.ToInt16 Méthode

Définition

Surcharges

ToInt16(Byte[], Int32)

Retourne un entier 16 bits signé converti à partir de deux octets à une position spécifiée dans un tableau d'octets.

ToInt16(ReadOnlySpan<Byte>)

Convertit une étendue d’octets en lecture seule en entier signé 16 bits.

ToInt16(Byte[], Int32)

Source:
BitConverter.cs
Source:
BitConverter.cs
Source:
BitConverter.cs

Retourne un entier 16 bits signé converti à partir de deux octets à une position spécifiée dans un tableau d'octets.

public:
 static short ToInt16(cli::array <System::Byte> ^ value, int startIndex);
public static short ToInt16 (byte[] value, int startIndex);
static member ToInt16 : byte[] * int -> int16
Public Shared Function ToInt16 (value As Byte(), startIndex As Integer) As Short

Paramètres

value
Byte[]

Tableau d’octets qui comprend les deux octets à convertir.

startIndex
Int32

Position de départ dans value.

Retours

Entier 16 bits signé composé de deux octets, à partir de startIndex.

Exceptions

startIndex est égal à la longueur de value moins 1.

value a la valeur null.

startIndex est inférieur à zéro ou supérieur à la longueur de value moins 1.

Exemples

L’exemple de code suivant convertit des éléments de Byte tableaux en Int16 valeurs avec la ToInt16 méthode .

// 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.
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
*/
open System

let print obj1 obj2 obj3 = printfn $"{obj1,5}{obj2,17}{obj3,10}"

// Convert two byte array elements to a short and display it.
let BAToInt16 bytes index =
    let value = BitConverter.ToInt16(bytes, index)

    print index (BitConverter.ToString(bytes, index, 2)) value

let byteArray =
    [| 15uy; 0uy; 0uy; 128uy; 16uy; 39uy; 240uy; 216uy; 241uy; 255uy; 127uy |]

printfn "This example of the BitConverter.ToInt16(byte [], int) \nmethod generates the following output. It converts elements \nof a byte array to short values.\n"
printfn "initial byte array"
printfn "------------------"
printfn $"{BitConverter.ToString byteArray}\n"
print "index" "array elements" "short"
print "-----" "--------------" "-----"

// 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.
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

Remarques

La ToInt16 méthode convertit les octets de l’index startIndex en startIndex + 1 en valeur Int16 . L’ordre des octets dans le tableau doit refléter l’endianness de l’architecture du système informatique. Pour plus d’informations, consultez la section Remarques de la rubrique de la BitConverter classe.

Voir aussi

S’applique à

ToInt16(ReadOnlySpan<Byte>)

Source:
BitConverter.cs
Source:
BitConverter.cs
Source:
BitConverter.cs

Convertit une étendue d’octets en lecture seule en entier signé 16 bits.

public:
 static short ToInt16(ReadOnlySpan<System::Byte> value);
public static short ToInt16 (ReadOnlySpan<byte> value);
static member ToInt16 : ReadOnlySpan<byte> -> int16
Public Shared Function ToInt16 (value As ReadOnlySpan(Of Byte)) As Short

Paramètres

value
ReadOnlySpan<Byte>

Étendue en lecture seule contenant les octets à convertir.

Retours

Entier signé 16 bits représentant les octets convertis.

Exceptions

La longueur de value est inférieure à 2.

S’applique à