string dataStr = "grant_type=refresh_token&client_id={REST API Key}&refresh_token=" + refreshToken;
Console.WriteLine(dataStr);
byte[] dataByte = Encoding.UTF8.GetBytes(dataStr);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(apiUrl);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
request.ContentLength = dataByte.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(dataByte, 0, dataByte.Length);
requestStream.Close();
request를 보내는 걸 이렇게 사용하고 있는데 Bad Request(400)이 뜨고 있습니다.
어디 부분이 잘못 된 건가요?