Asp.Net -标识2-在EmailService触发的电子邮件中附加文件

Question

我正在使用Asp.Net-Identity-2来管理我的应用程序中的用户访问。

我正在使用EmailService (UserManager.SendEmail)发送确认电子邮件消息，我想发送格式化的HTML消息，我希望在其中附加图片。

我该怎么做？？

• 安装标识用户管理器EmailService 公共类AppUserManager : UserManager { public AppUserManager(IUserStore store)：base(IUserStore){} public静态AppUserManager Create(IdentityFactoryOptions options，IOwinContext context) { AppUserManager manager = new AppUserManager(新UserStore(db))；//此处的一些设置代码.//Hook到我的EmailService (参见类MyEmailService.cs) manager.EmailService =新的MyEmailService()；返回管理器；} //Create } //class
• MyEmailService 公共类MyEmailService : IIdentityMessageService {公共任务SendAsync(IdentityMessage message) { MailMessage email =新MailMessage("me@sample.com"，message.Destination)；email.Subject = message.Subject；email.Body = message.Body；email.IsBodyHtml = true；var mailClient = new SmtpClient()；mailClient.Host = "EmailServer"；mailClient.Host= 25；返回email.IsBodyHtml(电子邮件)；}/SendAsync} //class
• 操作发送电子邮件 公共UserManager.GenerateEmailConfirmationToken(user.Id)；ActionResult ForgotPassword(string email) { if (ModelState.IsValid) { AppUser user = UserManager.FindByEmail(email)；if (user == null UserManager.IsEmailConfirmed！(UserManager.IsEmailConfirmed(user.Id){返回视图(“./Home/Index”)；}/if字符串代码=UserManager.FindByEmailstring callbackUrl = Url.Action("ResetPassword"，"Admin"，新的{ Id = user.Id，code = code }，protocol: Request.Url.Scheme)；string strMessage = getHTMLMessage()；//变量Html消息，其中包含图像引用(ex )。"")UserManager.SendEmail(user.Id，"Message“，strMessage)；return (”../Home/Index“)；} //如果到目前为止，有什么东西失败了，请重新显示返回视图()；}//忘记密码

我怀疑如何在信息中附加图像..。

谢谢你的帮助..。

胡利奥·舒特

Answer 1

我必须在我的服务中创建另一个方法并直接调用它。

    public Task SendAsync(IdentityMessage message, IEnumerable<KeyValuePair<string, Stream>> attach)
    {
        var myMessage = new SendGridMessage() { From = new MailAddress("my@email.com") };
        myMessage.AddTo(message.Destination);
        myMessage.Subject = message.Subject;

        myMessage.Html = message.Body;
        myMessage.Text = message.Body;


        var credentials = new NetworkCredential("myuser", "mypassword");
        var transportWeb = new Web(credentials);

        foreach (var file in attach)
        {
            myMessage.AddAttachment(file.Value,file.Key);
        }

        return transportWeb.DeliverAsync(myMessage);
    }

编辑：(2015-08-14)

最后一班：

public class EmailService : IIdentityMessageService
{
    const string from = "mail@domain.com";
    const string username = "username";//Environment.GetEnvironmentVariable("SENDGRID_USER");
    const string pswd = "password";//Environment.GetEnvironmentVariable("SENDGRID_PASS");
    private List<KeyValuePair<string, Stream>> _attachments;
    private List<KeyValuePair<string, string>> _recipients;

    public Task SendAsync(IdentityMessage message)
    {
        var myMessage = new SendGridMessage() { From = new MailAddress(from) };
        var credentials = new NetworkCredential(username, pswd);
        var transportWeb = new Web(credentials);

        myMessage.AddTo(message.Destination);
        if (_recipients != null)
        {
            _recipients.ForEach(r => myMessage.AddTo(string.Format("{0} {1}", r.Key, r.Value)));
        }
        myMessage.Subject = message.Subject;
        myMessage.Html = message.Body;
        myMessage.Text = message.Body;

        if (_attachments != null)
        {
            foreach (var attachment in _attachments)
            {
                myMessage.AddAttachment(attachment.Value, attachment.Key);
            }
        }

        return transportWeb.DeliverAsync(myMessage);
    }

    public Task SendAsync(IdentityMessage message, IEnumerable<KeyValuePair<string, Stream>> attachments)
    {
        var myMessage = new SendGridMessage() { From = new MailAddress(from) };
        var credentials = new NetworkCredential(username, pswd);
        var transportWeb = new Web(credentials);

        myMessage.AddTo(message.Destination);
        myMessage.Subject = message.Subject;
        myMessage.Html = message.Body;
        myMessage.Text = message.Body;

        foreach (var attachment in attachments)
        {
            myMessage.AddAttachment(attachment.Value, attachment.Key);
        }

        return transportWeb.DeliverAsync(myMessage);
    }

    public Task SendAsync(IdentityMessage message, KeyValuePair<string, Stream> attachment)
    {
        var myMessage = new SendGridMessage() { From = new MailAddress(from) };
        var credentials = new NetworkCredential(username, pswd);
        var transportWeb = new Web(credentials);

        myMessage.AddTo(message.Destination);
        myMessage.Subject = message.Subject;
        myMessage.Html = message.Body;
        myMessage.Text = message.Body;
        myMessage.AddAttachment(attachment.Value, attachment.Key);

        return transportWeb.DeliverAsync(myMessage);
    }

    public void AddTo(string name,string mail)
    {
        _recipients = _recipients ?? new List<KeyValuePair<string, string>>();
        _recipients.Add(new KeyValuePair<string, string>(name, string.Format("<{0}>", mail)));
    }

    public void AddAttachment(string name, Stream file)
    {
        _attachments = _attachments ?? new List<KeyValuePair<string, Stream>>();
        _attachments.Add(new KeyValuePair<string, Stream>(name, file));
    }

    public void AddAttachment<T>(string name, T records)
    {
        var jsonSerialiser = new JavaScriptSerializer();
        var json = jsonSerialiser.Serialize(records);
        var bytes = Encoding.UTF8.GetBytes(json);
        var ms = new MemoryStream(bytes);
        ms.Flush();
        ms.Seek(0, SeekOrigin.Begin);


        _attachments = _attachments ?? new List<KeyValuePair<string, Stream>>();
        _attachments.Add(new KeyValuePair<string, Stream>(name, ms));
    }
}

那就可以用它..。

// use it directly
                var emailService = new EmailService();
                IdentityMessage msg = new IdentityMessage()
                {
                    Destination = "test <test@domain.com>",
                    Subject = "Subject",
                    Body = "Body"
                };

                emailService.AddTo("Name1", "mail1@domain.com");
                emailService.AddTo("Name2", "mail2@domain.com");
                emailService.AddTo("Name3", "mail3@domaincom");

                emailService.AddAttachment(filename", stream);
                await emailService.SendAsync(msg);

                // Or use it from UserManager
                (UserManager.EmailService as EmailService).AddAttachment("name", yourStream);
                await UserManager.SendEmailAsync("userid", "subject", "body");