using System.Collections.Generic;
using System.Collections.Specialized;
public static void Main()
string url = "https://ap1.fcg1688.net/SearchMember";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ContentType = "application/x-www-form-urlencoded";
NameValueCollection postParams = System.Web.HttpUtility.ParseQueryString(string.Empty);
postParams.Add("AgentCode", "WD");
postParams.Add("Currency", "CNY");
postParams.Add("Params", "euiGf7lHruHrwt24dZFOsqdQnztf1MXg6jlA3WZa8UI");
postParams.Add("Sign", "380880742f058405b2d39ae12bf67d5c");
byte[] byteArray = Encoding.UTF8.GetBytes(postParams.ToString());
using (Stream reqStream = request.GetRequestStream())
reqStream.Write(byteArray, 0, byteArray.Length);
using (WebResponse response = request.GetResponse())
using (StreamReader sr = new StreamReader(response.GetResponseStream(),Encoding.UTF8))
responseStr = sr.ReadToEnd();
Console.Write(responseStr);