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 ConsoleApplicat ion1
{
class Class1
{
[STAThread]
static void Main(string[] args)
{

string s = "??";

string encoded_s;
string restored_s;

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

encoded_s=UTF7E ncoder(s);
Console.WriteLi ne("Encoded String : [{0}]" , encoded_s);

restored_s=UTF7 Decoder(encoded _s);
Console.WriteLi ne("Decoded String : [{0}]" , restored_s);

Console.ReadLin e();
}

public static string UTF7Encoder(str ing src)
{
return CodeConverter(s rc,Encoding.Def ault,Encoding.U TF7);
}

public static string UTF7Decoder(str ing src)
{
return CodeConverter(s rc,Encoding.UTF 7,Encoding.Defa ult);
}

private static string CodeConverter(s tring src, Encoding src_encoding,
Encoding dest_encoding)
{
byte[] array = new byte[src.Length];
array = src_encoding.Ge tBytes(src);
string s = dest_encoding.G etString(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.Defaul t to Encoding.Unicod e fixed that, which may be your solution as well.

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