如何在C#中通过电子邮件登录时获取用户UID

using System;
using System.Net;
using System.Net.Mail;

public class EmailLogin
{
    public string GetUserID(string email, string password)
    {
        // 设置发送方的电子邮件地址和密码
        var fromAddress = new MailAddress("your-email@example.com", "Your Name");
        var fromPassword = "your-email-password";

        // 设置接收方的电子邮件地址
        var toAddress = new MailAddress(email);

        // 创建电子邮件对象
        var mail = new MailMessage(fromAddress, toAddress);
        mail.Subject = "Login";
        mail.Body = "Please login with your email and password.";

        // 创建SMTP客户端对象并发送电子邮件
        var smtp = new SmtpClient
        {
            Host = "smtp.example.com", // SMTP服务器地址
            Port = 587, // SMTP服务器端口号
            EnableSsl = true, // 使用SSL加密连接
            DeliveryMethod = SmtpDeliveryMethod.Network,
            UseDefaultCredentials = false,
            Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
        };

        smtp.Send(mail);

        // 返回用户UID
        return GetUID(email);
    }

    private string GetUID(string email)
    {
        // 通过邮件地址查询用户UID
        // 这里可以使用数据库查询或其他业务逻辑进行处理

        return "user-uid";
    }
}

class Program
{
    static void Main(string[] args)
    {
        var email = "user@example.com";
        var password = "password";

        var emailLogin = new EmailLogin();
        var uid = emailLogin.GetUserID(email, password);

        Console.WriteLine($"User UID: {uid}");
    }
}

using System;
using OpenPop.Mime;
using OpenPop.Pop3;

public class EmailLogin
{
    public string GetUserID(string email, string password)
    {
        using (var client = new Pop3Client())
        {
            client.Connect("pop3.example.com", 995, true); // POP3服务器地址和端口号
            client.Authenticate(email, password); // 邮箱地址和密码

            var messageCount = client.GetMessageCount();
            var message = client.GetMessage(messageCount);

            // 解析邮件内容，提取用户UID
            var uid = ExtractUID(message);

            return uid;
        }
    }

    private string ExtractUID(Message message)
    {
        // 解析邮件内容，提取用户UID
        // 这里可以使用正则表达式或其他方法进行处理

        return "user-uid";
    }
}

class Program
{
    static void Main(string[] args)
    {
        var email = "user@example.com";
        var password = "password";

        var emailLogin = new EmailLogin();
        var uid = emailLogin.GetUserID(email, password);

        Console.WriteLine($"User UID: {uid}");
    }
}