c# - Accented characters displayed as hex values in mail source file -

i have convert content of mail message xml format facing encoding problems. indeed, accented characters , others displayed in message file hex value. ex :

é displayed =e9, ô displayed =f4, = displayed =3d... 

the mail configured sent iso-8859-1 coding , can see these parameters in file :

content-type: text/plain; charset=iso-8859-1 content-transfer-encoding: quoted-printable 

notepad++ detects file "ansi utf-8".

i need convert in c# (i in script task in ssis project) readable , can not manage that.

i tried encoding in utf-8 in streamreader nothing. despite readings on topic, still not understand steps lead problem , means solve it.

i point out outlook decodes message , accented characters displayed correctly.

thanks in advance.

ok looking on wrong direction. keyword here "quoted-printable". issue comes , have decode.

in order that, followed example posted martin murphy in thread :

c#: class decoding quoted-printable encoding?

the method described :

public static string decodequotedprintables(string input) {     var occurences = new regex(@"=[0-9a-f]{2}", regexoptions.multiline);     var matches = occurences.matches(input);     foreach (match match in matches)     {         char hexchar= (char) convert.toint32(match.groups[0].value.substring(1), 16);         input =input.replace(match.groups[0].value, hexchar.tostring());     }     return input.replace("=\r\n", ""); } 

to summarize, open streamreader in utf8 , place each read line in string :

mystring += line + "\r\n"; 

i open streamwriter in utf8 , write mystring variable decoded in :

mystreamwriter.writeline(decodequotedprintables(mystring));