Export (0) Print
Expand All

UTF7Encoding.GetDecoder Method

Obtains a decoder that converts a UTF-7 encoded sequence of bytes into a sequence of Unicode characters.

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

public override Decoder GetDecoder ()
public Decoder GetDecoder ()
public override function GetDecoder () : Decoder

Return Value

A Decoder that converts a UTF-7 encoded sequence of bytes into a sequence of Unicode characters.

The Decoder.GetChars method converts sequential blocks of bytes into sequential blocks of characters, in a manner similar to the GetChars method of this class. However, a Decoder maintains state information between calls so it can correctly decode byte sequences that span blocks. The Decoder also preserves trailing bytes at the end of data blocks and uses the trailing bytes in the next decoding operation. Therefore, GetDecoder and GetEncoder are useful for network transmission and file operations, because those operations often deal with blocks of data instead of a complete data stream.

The following code example demonstrates how to use the GetDecoder method to obtain a decoder to convert the UTF-7 encoded bytes into a sequence of characters.

using System;
using System.Text;

class UTF7EncodingExample {
    public static void Main() {
        Char[] chars;
        Byte[] bytes = new Byte[] {
            99, 43, 65, 119, 67, 103, 111, 65, 45
        };

        Decoder utf7Decoder = Encoding.UTF7.GetDecoder();

        int charCount = utf7Decoder.GetCharCount(bytes, 0, bytes.Length);
        chars = new Char[charCount];
        int charsDecodedCount = utf7Decoder.GetChars(bytes, 0, bytes.Length, chars, 0);

        Console.WriteLine(
            "{0} characters used to decode bytes.", charsDecodedCount
        );

        Console.Write("Decoded chars: ");
        foreach (Char c in chars) {
            Console.Write("[{0}]", c);
        }
        Console.WriteLine();
    }
}

import System.*;
import System.Text.*;

class UTF7EncodingExample
{
    public static void main(String[] args)
    {
        char chars[];
        ubyte bytes[] = new ubyte[] { 99, 43, 65, 119, 67, 103, 111, 65, 45 };
        Decoder utf7Decoder = Encoding.get_UTF7().GetDecoder();
        int charCount = utf7Decoder.GetCharCount(bytes, 0, bytes.length);
        chars = new char[charCount];
        int charsDecodedCount = utf7Decoder.GetChars(bytes,
            0, bytes.length, chars, 0);
        Console.WriteLine("{0} characters used to decode bytes.",
            String.valueOf(charsDecodedCount));
        Console.Write("Decoded chars: ");
        for(int iCtr = 0; iCtr < chars.length; iCtr++) {
            char c = chars[iCtr];
            Console.Write("[{0}]", String.valueOf(c));
        }
        Console.WriteLine();
    } //main
} //UTF7EncodingExample

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

Community Additions

ADD
Show:
© 2014 Microsoft