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BitConverter::ToChar Method

Returns a Unicode character converted from two bytes at a specified position in a byte array.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public:
static wchar_t ToChar(
	array<unsigned char>^ value, 
	int startIndex
)

Parameters

value
Type: array<System::Byte>

An array.

startIndex
Type: System::Int32

The starting position within value.

Return Value

Type: System::Char
A character formed by two bytes beginning at startIndex.

ExceptionCondition
ArgumentException

startIndex equals the length of value minus 1.

ArgumentNullException

value is nullptr.

ArgumentOutOfRangeException

startIndex is less than zero or greater than the length of value minus 1.

The following code example converts elements of Byte arrays to Char values (Unicode characters) with the ToChar method.

// Example of the BitConverter::ToChar method. 
using namespace System;

// Convert two byte array elements to a __wchar_t and display it. 
void BAToChar( array<unsigned char>^bytes, int index )
{
   __wchar_t value = BitConverter::ToChar( bytes, index );
   Console::WriteLine( "{0,5}{1,17}{2,11}", index, BitConverter::ToString( bytes, index, 2 ), value );
}

int main()
{
   array<unsigned char>^byteArray = {32,0,0,42,0,65,0,125,0,197,0,168,3,41,4,172,32};
   Console::WriteLine( "This example of the BitConverter::ToChar( unsigned " 
   "char[ ], int ) \nmethod generates the following output. It " 
   "converts elements of a \nbyte array to __wchar_t values.\n" );
   Console::WriteLine( "initial unsigned char array" );
   Console::WriteLine( "---------------------------" );
   Console::WriteLine( BitConverter::ToString( byteArray ) );
   Console::WriteLine();
   Console::WriteLine( "{0,5}{1,17}{2,11}", "index", "array elements", "__wchar_t" );
   Console::WriteLine( "{0,5}{1,17}{2,11}", "-----", "--------------", "---------" );

   // Convert byte array elements to __wchar_t values.
   BAToChar( byteArray, 0 );
   BAToChar( byteArray, 1 );
   BAToChar( byteArray, 3 );
   BAToChar( byteArray, 5 );
   BAToChar( byteArray, 7 );
   BAToChar( byteArray, 9 );
   BAToChar( byteArray, 11 );
   BAToChar( byteArray, 13 );
   BAToChar( byteArray, 15 );
}

/*
This example of the BitConverter::ToChar( unsigned char[ ], int )
method generates the following output. It converts elements of a
byte array to __wchar_t values.

initial unsigned char array
---------------------------
20-00-00-2A-00-41-00-7D-00-C5-00-A8-03-29-04-AC-20

index   array elements  __wchar_t
-----   --------------  ---------
    0            20-00
    1            00-00
    3            2A-00          *
    5            41-00          A
    7            7D-00          }
    9            C5-00          �
   11            A8-03          ?
   13            29-04          ?
   15            AC-20          ?
*/

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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