public string Login(string data, Client client, Server server) { string[] strs = data.Split(','); string username = strs[0]; string password = strs[1]; User user = userDAO.VerifyUser(client.SqlConn, username, password); if (user == null) { return(((int)ReturnCode.Fail).ToString()); } else { Result result = resultDAO.GetResultByID(client.SqlConn, user.Id); //登录成功后要返回战绩信息,字符串格式化组拼 return(string.Format("{0},{1},{2},{3}", ((int)ReturnCode.Success).ToString(), user.Username, result.totalCount, result.winCount)); } }