在分布式环境中使用hangfire每天发送电子邮件

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

public class EmailSender
{
    public void SendEmail()
    {
        // 实现发送电子邮件的逻辑
        // ...
        
        // 示例代码，发送一封测试邮件
        var smtpClient = new SmtpClient("smtp.example.com");
        var mailMessage = new MailMessage("sender@example.com", "recipient@example.com", "Subject", "Body");
        smtpClient.Send(mailMessage);
    }
}

public class Program
{
    public static void Main()
    {
        // 配置Hangfire
        GlobalConfiguration.Configuration.UseSqlServerStorage("connectionString");

        // 定义每天发送电子邮件的定时任务
        RecurringJob.AddOrUpdate<EmailSender>(x => x.SendEmail(), Cron.Daily);

        // 启动Hangfire后台任务处理
        using (var server = new BackgroundJobServer())
        {
            Console.WriteLine("Hangfire server started. Press any key to exit...");
            Console.ReadKey();
        }
    }
}