protected static readonly DBUser dbUser = new DBUser();//引用数据访问层 /// <summary> /// 账号或者密码错误返回null /// </summary> public User CheckLogin(string userID, string userPwd) { if (string.IsNullOrEmpty(userID) || string.IsNullOrEmpty(userPwd)) { return(null); } User user = dbUser.SelectByID(userID); if (null == user) { return(null); } if (user.UserPwd.Equals(Tool.StringHelper.EncryptPwd(userPwd))) { return(user); } else { return(null); } }