BitConverter.ToInt16 Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Returns a 16-bit signed integer converted from two bytes at a specified position in a byte array.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function ToInt16 ( _
value As Byte(), _
startIndex As Integer _
) As Short
[SecuritySafeCriticalAttribute]
public static short ToInt16(
byte[] value,
int startIndex
)
Parameters
- value
Type: array<System.Byte[]
An array of bytes.
- startIndex
Type: System.Int32
The starting position within value.
Return Value
Type: System.Int16
A 16-bit signed integer formed by two bytes beginning at startIndex.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentException | startIndex equals the length of value minus 1. |
| ArgumentNullException | value is nulla null reference (Nothing in Visual Basic). |
| ArgumentOutOfRangeException | startIndex is less than zero or greater than the length of value minus 1. |
Examples
The following code example converts elements of Byte arrays to Int16 values with the ToInt16 method.
' Example of the BitConverter.ToInt16 method.
Module Example
Const formatter As String = "{0,5}{1,17}{2,10}"
' Convert two Byte array elements to a Short and display it.
Sub BAToInt16(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal bytes() As Byte, ByVal index As Integer)
Dim value As Short = BitConverter.ToInt16(bytes, index)
outputBlock.Text &= String.Format(formatter, index, _
BitConverter.ToString(bytes, index, 2), value) & vbCrLf
End Sub
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim byteArray As Byte() = { _
15, 0, 0, 128, 16, 39, 240, 216, 241, 255, 127}
outputBlock.Text &= String.Format( _
"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) & vbCrLf
outputBlock.Text &= "initial Byte array" & vbCrLf
outputBlock.Text &= "------------------" & vbCrLf
outputBlock.Text &= BitConverter.ToString(byteArray) & vbCrLf
outputBlock.Text &= vbCrLf
outputBlock.Text &= String.Format(formatter, "index", "array elements", "Short") & vbCrLf
outputBlock.Text &= String.Format(formatter, "-----", "--------------", "-----") & vbCrLf
' Convert Byte array elements to Short values.
BAToInt16(outputBlock, byteArray, 1)
BAToInt16(outputBlock, byteArray, 0)
BAToInt16(outputBlock, byteArray, 8)
BAToInt16(outputBlock, byteArray, 4)
BAToInt16(outputBlock, byteArray, 6)
BAToInt16(outputBlock, byteArray, 9)
BAToInt16(outputBlock, 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 Example
{
const string formatter = "{0,5}{1,17}{2,10}";
// Convert two byte array elements to a short and display it.
public static void BAToInt16(System.Windows.Controls.TextBlock outputBlock, byte[] bytes, int index)
{
short value = BitConverter.ToInt16(bytes, index);
outputBlock.Text += String.Format(formatter, index,
BitConverter.ToString(bytes, index, 2), value) + "\n";
}
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
byte[] byteArray = { 15, 0, 0, 128, 16, 39, 240, 216, 241, 255, 127 };
outputBlock.Text += String.Format(
"This example of the BitConverter.ToInt16( byte[ ], " +
"int ) \nmethod generates the following output. It " +
"converts elements \nof a byte array to short values.\n") + "\n";
outputBlock.Text += "initial byte array" + "\n";
outputBlock.Text += "------------------" + "\n";
outputBlock.Text += BitConverter.ToString(byteArray) + "\n";
outputBlock.Text += "\n";
outputBlock.Text += String.Format(formatter, "index", "array elements", "short") + "\n";
outputBlock.Text += String.Format(formatter, "-----", "--------------", "-----") + "\n";
// Convert byte array elements to short values.
BAToInt16(outputBlock, byteArray, 1);
BAToInt16(outputBlock, byteArray, 0);
BAToInt16(outputBlock, byteArray, 8);
BAToInt16(outputBlock, byteArray, 4);
BAToInt16(outputBlock, byteArray, 6);
BAToInt16(outputBlock, byteArray, 9);
BAToInt16(outputBlock, 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
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.