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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 char ToChar(
	byte[] value,
	int startIndex
)

Parameters

value
Type: 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 null.

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 System;

class Example
{
   const string formatter = "{0,5}{1,17}{2,8}";

   // Convert two byte array elements to a char and display it.
   public static void BAToChar(System.Windows.Controls.TextBlock outputBlock, byte[] bytes, int index)
   {
      char value = BitConverter.ToChar(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 = {
             32,   0,   0,  42,   0,  65,   0, 125,   0, 
            197,   0, 168,   3,  41,   4, 172,  32 };

      outputBlock.Text += String.Format(
          "This example of the BitConverter.ToChar( byte[ ], " +
          "int ) \nmethod generates the following output. It " +
          "converts \nelements of a byte array to char 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", "char") + "\n";
      outputBlock.Text += String.Format(formatter, "-----", "--------------", "----") + "\n";

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

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

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

index   array elements    char
-----   --------------    ----
    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       ?
*/


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

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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