Decode Chinese Character From UTF-7 Data

[Alex Chan]

Hi group,

I am writing a RFC Server with SAP.NET Connector to connect to SAP. There
are chinese characters passing back and forth.

I found that all chinese characters sending from SAP are encoded with
UTF-7. In order to let SAP display chinese characters correctly, i also need
to encode my chinese data by UTF-7.

However, i need to convert the UTF-7 encoded SAP data back to chinese
character, but i tried in vain. I wrote a simple program to test it. but it
made me more confused. The following C# program try to encode the chinese
string "s" with UTF-7 and then decode it.

But i never get it back. What is wrong?

Regards,

Alex

============================================
using System;
using System.Text;
namespace ConsoleApplication1
{
class Class1
{
[STAThread]
static void Main(string[] args)
{

string s = "??";

string encoded_s;
string restored_s;

Console.WriteLine("Source String : [{0}]" , s);

encoded_s=UTF7Encoder(s);
Console.WriteLine("Encoded String : [{0}]" , encoded_s);

restored_s=UTF7Decoder(encoded_s);
Console.WriteLine("Decoded String : [{0}]" , restored_s);

Console.ReadLine();
}

public static string UTF7Encoder(string src)
{
return CodeConverter(src,Encoding.Default,Encoding.UTF7);
}

public static string UTF7Decoder(string src)
{
return CodeConverter(src,Encoding.UTF7,Encoding.Default);
}

private static string CodeConverter(string src, Encoding src_encoding,
Encoding dest_encoding)
{
byte[] array = new byte[src.Length];
array = src_encoding.GetBytes(src);
string s = dest_encoding.GetString(array);
return s;
}
}
}

[Morten Wennevik]

Hi Alex,

Your code is correct, however, it will not work for me as my Default encoding doesn't support chinese characters. Changing Encoding.Default to Encoding.Unicode fixed that, which may be your solution as well.

--
Happy Coding!
Morten Wennevik [C# MVP]