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when the data is posted to http://www.zhubajie.com/task/user/register，it
fails without any error msg
my code :
WebClient webClient = new WebClient();
webClient.Headers.Add("Content-Type", "application/x-www-form-
urlencoded");
byte[] postData = Encoding.ASCII.GetBytes
("username=ccccccgfcccccc&password=cccckjcccccds&r epassword=cccckjcccccds&email=cydhdfdsucku@cyh**** u.com&passregtext=1&uFrom=no&forward=&url=&welcome =");
byte[] responseData = webClient.UploadData("http://
www.zhubajie.com/task/user/regnex", "POST", postData);
string pageHtml = Encoding.UTF8.GetString(responseData);
Response.Write(pageHtml);