Bll

一般要实例化Model和DAL

调用 Dal方法。

如：

 /// <summary>

        /// 是否存在该记录

        /// </summary>

        public bool Exists(int id)

        {

            return dal.Exists(id);

        }

  /// <summary>

        /// 根据用户名密码返回一个实体

        /// </summary>

        /// <param name="user_name">用户名(明文)</param>

        /// <param name="password">密码</param>

        /// <param name="emaillogin">是否允许邮箱做为登录</param>

        /// <param name="mobilelogin">是否允许手机做为登录</param>

        /// <param name="is_encrypt">是否需要加密密码</param>

        /// <returns></returns>

        public Model.users GetModel(string user_name, string password, int emaillogin, int mobilelogin, bool is_encrypt)

        {

            //检查一下是否需要加密

            if (is_encrypt)

            {

                //先取得该用户的随机密钥

                string salt = dal.GetSalt(user_name);

                if (string.IsNullOrEmpty(salt))

                {

                    return null;

                }

                //把明文进行加密重新赋值

                password = DESEncrypt.Encrypt(password, salt);

            }

            return dal.GetModel(user_name, password, emaillogin, mobilelogin);

        }