c# - How to read string from HttpRequest form data in correct encoding -

today have done service receive emails sendgrid , have sent email text "at long last", first time in non-english language during testing. unfortunately, encoding has become problem cannot fix.

in servicestack service have string property (in input object posted service sendgrid) in encoding different utf8 or unicode (koi8-r in case).

public class senggridemail : ireturn<senggridemailresponse>     {         public string text { get; set; }     } 

when try convert string utf8 ????s, because when access text property converted unicode (.net's internal string representation). this question , answer illustrate issue.

my question how original koi8-r bytes within servicestack service or asp.net mvc controller, convert utf8 text?

update:

accessing base.request.formdata["text"] doesn't help

var originalencoding = encoding.getencoding("koi8-r"); var originalbytes = originalencoding.getbytes(base.request.formdata["text"]); 

but if take base64 string original sent mail , convert byte[], , convert bytes utf8 string - works. either base.request.formdata["text"] in unicode .net string format, or (less likely) on sendgrid side.

update 2: here unit test shows happening:

[test] public void encodingtest() {     const string originalstring = "наконец-то\r\n";     const string base64koi = "zshlz87fwy3uzw0k";     const string charset = "koi8-r";      var originalbytes = base64koi.frombase64string(); // koi bytes     var originalencoding = encoding.getencoding(charset); // koi encoding     var originaltext = originalencoding.getstring(originalbytes); // initial string correctly converted .net representation      assert.areequal(originalstring, originaltext);      var unicodeencoding = encoding.utf8;      var originalwrongstring = unicodeencoding.getstring(originalbytes); // how koi string represented in .net, equals base.request.formdata["text"]     var originalwrongbytes = originalencoding.getbytes(originalwrongstring);       var unicodebytes = encoding.convert(originalencoding, unicodeencoding, originalbytes);     var result = unicodeencoding.getstring(unicodebytes);      var unicodewrongbytes = encoding.convert(originalencoding, unicodeencoding, originalwrongbytes);     var wrongresult = unicodeencoding.getstring(unicodewrongbytes); // see in db      assert.areequal(originalstring, result);     assert.areequal(originalstring, wrongresult); // want pass! } 

discovered 2 underlying problems problem.

the first sendgrid - post multi-part data without specifying content-type non-unicode elements.

the second servicestack - doesn't support encoding other utf-8 multi-part data.

update:

sendgrid helpdesk promised issue, servicestack support custom charsets in multi-part data.

as initial question itself, 1 access buffered stream in servicestack described here: can servicestack runner request body?.