郁悶的大象

/// <summary>
        /// 重置密碼
        /// </summary>
        /// <param name="username"></param>
        /// <param name="email"></param>
        /// <returns></returns>
        public ResetPasswordStatus ResetPassword(string username, string email)
        {
            MembershipUserCollection users = Membership.FindUsersByName(username);
            if (users.Count <= 0)//用戶名未找到
            {
                //不要在BLL、DAL等非UI層來進行UI層的操作（比如MessageBox、Redirect）
                return ResetPasswordStatus.UserNameNotFound;
            }
            else if (users.Count > 1)
            {
                throw new Exception("存在多個重名的用戶名："+username);
            }
            MembershipUser user = users[username];
            if (email != user.Email)//Email不匹配
            {
                return ResetPasswordStatus.EmailInvalid;
            }
            //重置密碼
            string newPwd = user.ResetPassword();//重置為新密碼
          
            //生成一個簡單的隨機的新密碼
            //一種思路是用生成驗證碼的隨機數(shù)算法
            //或者也可以使用取巧的辦法，就是取Guid的后六位
            string guid = Guid.NewGuid().ToString();
            string newSimplePwd = guid.Substring(guid.Length - 6);
            user.ChangePassword(newPwd, newSimplePwd); //把ResetPassword返回的復(fù)雜的密碼改成新密碼

            CommonHelper.SendEmail(user.Email,
                "您在xx網(wǎng)的新密碼", "。。新密碼是：" + newSimplePwd);
            return ResetPasswordStatus.Success;
        }