public string AuthQuery(string method, Dictionary <string, string> postDict)
{
//通过Tick获得的整数对Btce来说可能太大了！
string nonce = AuthUtility.GetNonceBySeconds();
postDict.Add("nonce", nonce);
postDict.Add("method", method);
string post = AuthUtility.ToPost(postDict, true);
var sign = AuthUtility.GetSign(post, AuthKey.PrivateKey);
byte[] data = Encoding.ASCII.GetBytes(post);
HttpWebRequest webRequest = GetWebRequest(data, sign);
string json = AuthUtility.GetResponseJson(webRequest);
return(json);
}