IBM Informix Database Encoding Issue With .Net when Retrieve Arabic String

Question

I have faced this issue When retrieve Data From IBM INFORMIX DATABASE

-I have setup Version 2.90 Data stored in DB like this

نيمبالى بادرها سرادهى راجو

when i retrieve this from informix get in wrong format like this

äíãÈÇáì ÈÇÏÑåÇ ÓÑÇÏåì ÑÇÌæ

database used this encoding en_us.819 So I have Tried A lot Of Solutions to fix this encoding i have create this method in .NET to Uni coding this wrong format to correct Arabic format

private static string UniCode_IBM819(string str)
        {
            Encoding iso = Encoding.GetEncoding("iso-8859-1");
            Encoding unicode =    Encoding.GetEncoding(708);//Encoding.GetEncoding(864);//Encoding.UTF8;
            //byte[] unicodeBytes = unicode.GetBytes(str);
            byte[] isoBytes = iso.GetBytes(str);
            byte[] utfBytes = Encoding.Convert(iso,unicode,  isoBytes);
            return unicode.GetString(utfBytes);


        }

i have tried 3 encoding but get me result like

?????? ???? ????? ?????

Answer 1

ISSUE SOLVED

I'm using this method:

 private static string UniCodeIso819Towin1256(string src)
        {
            Encoding iso819 = Encoding.GetEncoding("iso8859-1");
            Encoding win1256 = Encoding.GetEncoding(1256);
            byte[] isoBytes = iso819.GetBytes(src);
            return win1256.GetString(isoBytes);
        }

to convert this returned value 'äíãÈÇáì ÈÇÏÑåÇ ÓÑÇÏåì ÑÇÌæ' to the original format like this 'نيمبالى بادرها سرادهى راجو'