Add attachment to email asp.net mvc 4

Question

I have feedback form on my site and I have <input type="file"> in my form, so sometimes it will be need to add attachment to email.
I created <input type="file"> in my form

 @Html.TextBoxFor(model => model.ProjectInformation, null, new { type = "file", @class = "input-file" })

then in my controller I create email and try to add attachment

    [HttpPost]
    public ActionResult Feedback(FeedbackForm Model)
    {
        System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
        msg.BodyEncoding = Encoding.UTF8;

        msg.From = new MailAddress("[email protected]", @Resources.Global.Feedback_Email_Title);
        msg.To.Add("[email protected]");

        string message = @Resources.Global.Feedback_Name + ": " + Model.Name + "\n"
                        + @Resources.Global.Feedback_Email + ": " + Model.Email + "\n"
                        + @Resources.Global.Feedback_Phone + ": " + Model.Phone + "\n"
                        + @Resources.Global.Feedback_Company + ": " + Model.Company + "\n\n"
                        + Model.AdditionalInformation;
        msg.Body = message;
        msg.IsBodyHtml = false;

        //Attachment
        if (Model.ProjectInformation != null)
        {
            HttpPostedFileBase attFile = Model.ProjectInformation;
            int attachFileLength = attFile.ContentLength;
            if (attachFileLength > 0)
            {
                string strFileName = Path.GetFileName(Model.ProjectInformation.FileName);
                Model.ProjectInformation.SaveAs(Server.MapPath(strFileName));
                Attachment attach = new Attachment(Server.MapPath(strFileName));                   
                msg.Attachments.Add(attach);
                string attach1 = strFileName;
            }
        }

        SmtpClient client = new SmtpClient("smtp.mail.ru", 25);
        client.UseDefaultCredentials = false;
        client.EnableSsl = false;

        try
        {
            client.Send(msg);
        }

        catch (Exception ex)
        {
        }

        FeedbackForm tempForm = new FeedbackForm();
        return View(tempForm);
    }

but I think I need to delete attachment after sending and I try to add code here

        try
        {
            client.Send(msg);
            if (attach1 != null)
            File.Delete(Server.MapPath(attach1));
        }

but I get some mistakes

enter image description here

and

enter image description here

What should I do to fix that?

webdeveloper · Accepted Answer · 2013-05-22 12:28:20Z

1

You should declare a variable before if (Model.ProjectInformation != null)

Something like this:

    string attach1;
    if (Model.ProjectInformation != null)
    {
        . . .
        if (attachFileLength > 0)
        {
            . . .
            attach1 = strFileName;
        }
    }

answered May 22, 2013 at 12:28

webdeveloper

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6 Comments

Heidel Over a year ago

Thank you, it helped, but the second mistake i.sstatic.net/aDFxO.png is not fixed.

webdeveloper Over a year ago

@Heidel Invalid namespace, you should use System.IO.File

Heidel Over a year ago

I use using System.IO; but it doesnt help, the same mistake.

webdeveloper Over a year ago

@Heidel You still have namespace conflict. Replace File.Delete() with System.IO.File.Delete(), compiler can't understand which File you would like to use.

webdeveloper Over a year ago

@Heidel It's possible, that your if check won't set value for attach1 and compiler show error. Declare attach1 with assignment: string attach1 = null;

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