.net發送HTTP請求

string postData = "appKey=" + appKey;//參數
postData += ("&appSecret=" + appSecret);

var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";//請求方式
request.ContentType = "application/x-www-form-urlencoded";//請求內容類型
var data = Encoding.UTF8.GetBytes(postData);//獲取長度
 request.ContentLength = data.Length;
Stream newStream = request.GetRequestStream();

 //send
newStream.Write(data, 0, data.Length);
newStream.Close();

//get
WebResponse response = request.GetResponse();
newStream = response.GetResponseStream();
StreamReader reader = new StreamReader(newStream);
string responseFromServer = reader.ReadToEnd();//得到返回數據
reader.Close();
response.Close();