请求：向dwz.cn/create.php发送post请求，发送数据包括url=长网址
返回：json格式的数据
status!=0 出错，查看err_msg获得错误信息（UTF-8编码）
成功，返回生成的短网址 tinyurl字段
我的代码：
string postDataStr = "url=http://p.yiqifa.com/c?s=e8e3e940&w=378742&c=1340&i=1263&l=0&e=c&t=http://e.7daysinn.cn/market/index.php?sid=111073";
string Url = "http://dwz.cn/create.php";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
request.CookieContainer = new CookieContainer();
request.Method = "POST";
request.ContentLength = postDataStr.Length;
MessageBox.Show(postDataStr.Length.ToString());
request.ContentType = "application/x-www-form-urlencoded";
Stream myRequestStream = request.GetRequestStream();
StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
myStreamWriter.Write(postDataStr);
myStreamWriter.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("UTF-8"));
string retString = myStreamReader.ReadToEnd();
textBox1.Text =retString;
现在的问题是每次传到&的时候就断了。如果把postDataStr换成http://www.hao123.com是OK的。
请高手指点如何在POST里把&传送出去，谢谢！
