ASP.NET MVC 电子邮件

ASP.NET MVC（Model-View-Controller）是一种用于构建基于Web的应用程序的框架。它提供了一种分离关注点的方法，将应用程序的逻辑、用户界面和数据操作分离开来。其中一个常见的应用场景是电子邮件系统。本文将介绍如何使用ASP.NET MVC构建一个简单的电子邮件系统，并提供相应的案例代码。

public class Email
{
    public int Id { get; set; }
    public string Sender { get; set; }
    public string Recipient { get; set; }
    public string Subject { get; set; }
    public string Content { get; set; }
    public DateTime SentDate { get; set; }
    public bool IsRead { get; set; }
}

[HttpPost]
public ActionResult SendEmail(Email email)
{
    if (ModelState.IsValid)
    {
        email.SentDate = DateTime.Now;
        email.IsRead = false;
        
        // 保存邮件到数据库
        using (var db = new EmailDbContext())
        {
            db.Emails.Add(email);
            db.SaveChanges();
        }
        
        return RedirectToAction("Sent");
    }
    
    return View(email);
}

public ActionResult ViewEmail(int id)
{
    using (var db = new EmailDbContext())
    {
        var email = db.Emails.Find(id);
        
        if (email != null)
        {
            // 将邮件标记为已读
            email.IsRead = true;
            db.SaveChanges();
            
            return View(email);
        }
    }
    
    return RedirectToAction("Inbox");
}

[HttpPost]
public ActionResult ReplyEmail(Email email)
{
    if (ModelState.IsValid)
    {
        email.SentDate = DateTime.Now;
        email.IsRead = false;
        
        // 保存回复邮件到数据库
        using (var db = new EmailDbContext())
        {
            db.Emails.Add(email);
            db.SaveChanges();
        }
        
        return RedirectToAction("Sent");
    }
    
    return View(email);
}