UTF8Encoding.GetDecoder Method

Return Value

Type: System.Text.Decoder
A Decoder that converts a UTF-8 encoded sequence of bytes into a sequence of Unicode characters.

Imports System.Text

Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim chars() As Char
      Dim bytes() As Byte = {99, 204, 128, 234, 130, 160}

      Dim utf8Decoder As Decoder = Encoding.UTF8.GetDecoder()

      Dim charCount As Integer = utf8Decoder.GetCharCount(bytes, 0, bytes.Length)
      chars = New Char(charCount - 1) {}
      Dim charsDecodedCount As Integer = utf8Decoder.GetChars( _
          bytes, 0, bytes.Length, chars, 0 _
      )

      outputBlock.Text += String.Format("{0} characters used to decode bytes.", charsDecodedCount) & vbCrLf

      outputBlock.Text &= "Decoded chars: "
      Dim c As Char
      For Each c In chars
         outputBlock.Text += String.Format("[{0}]", c)
      Next c
      outputBlock.Text &= vbCrLf
   End Sub 'Main
End Class 'UTF8EncodingExample

using System;
using System.Text;

class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      Char[] chars;
      Byte[] bytes = new Byte[] {
            99, 204, 128, 234, 130, 160
        };

      Decoder utf8Decoder = Encoding.UTF8.GetDecoder();

      int charCount = utf8Decoder.GetCharCount(bytes, 0, bytes.Length);
      chars = new Char[charCount];
      int charsDecodedCount = utf8Decoder.GetChars(bytes, 0, bytes.Length, chars, 0);

      outputBlock.Text += String.Format(
          "{0} characters used to decode bytes.", charsDecodedCount
      ) + "\n";

      outputBlock.Text += "Decoded chars: ";
      foreach (Char c in chars)
      {
         outputBlock.Text += String.Format("[{0}]", c);
      }
      outputBlock.Text += "\n";
   }
}