WindowsFormsApplication1.Form1.deleteMember C# (CSharp) Method

        private Boolean deleteMember(string room_name, List<string> deleted_list)
        {
            var url = base_url + String.Format("webwxupdatechatroom?fun=delmember&pass_ticket={0}", pass_ticket);
            var http = WebRequest.Create(url) as HttpWebRequest;
            http.CookieContainer = cookieContainer;
            http.ContentType = "application/json; charset=UTF-8";
            http.Method = "POST";
            var serializer = new JavaScriptSerializer();
            var base_req_param = new { Uin = Int64.Parse(wxuin), Sid = wxsid, Skey = skey, DeviceID = deviceId };
            var payload = serializer.Serialize(new
            {
                BaseRequest = base_req_param,
                ChatRoomName = room_name,
                DelMemberList = unpack(",", deleted_list)
            });
            Console.WriteLine(payload);
            var response = getPostResponse(http, payload);
            var dic = deserilizeJson(response);
            var err_msg = dic["BaseResponse"]["ErrMsg"];
            var ret = dic["BaseResponse"]["Ret"];
            if ((int) ret != 0)
            {
                return false;
            }
            return true;
        }