Question

我已经从gridview生成了一个PDF文件。我的任务是将生成的PDF文件发送到特定的电子邮件，而无需用户使用上传控件并选择我生成的PDF文件。我能够通过用户手动浏览并选择PDF作为附件来执行普通电子邮件，有没有办法实现PDF文件到电子邮件的自动附件？

SqlDataSource SqlDataSource1 = new SqlDataSource();
        SqlDataSource1.ID = "SqlDataSource1";
        this.Page.Controls.Add(SqlDataSource1);
        SqlDataSource1.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
        SqlDataSource1.SelectCommand = "SELECT Id, msgContent, msgDate from Message where msgDate between '" + dateFrom + "' and '" + dateTo + "'";
        GridView1.DataSource = SqlDataSource1;
        GridView1.DataBind();

这是我绑定到gridview的数据。

StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);
        GridView1.RenderControl(hw);
        StringReader sr = new StringReader(sw.ToString());

        Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
        HTMLWorker htmlworker = new HTMLWorker(pdfDoc);

        using (MemoryStream ObjememoryStream = new MemoryStream())
        {
            PdfWriter.GetInstance(pdfDoc, ObjememoryStream);
            pdfDoc.Open();
            htmlworker.Parse(sr);
            pdfDoc.Close();
            byte[] Filebytes = ObjememoryStream.ToArray();
            ObjememoryStream.Close();
            using (MemoryStream inputData = new MemoryStream(Filebytes))
            {
                using (MemoryStream outputData = new MemoryStream())
                {
                    string PDFFileword = txtPassword.Text;//you can also generate Dynamic word  
                    PdfReader reader = new PdfReader(inputData);
                    PdfEncryptor.Encrypt(reader, outputData, true, PDFFileword, PDFFileword, PdfWriter.ALLOW_SCREENREADERS);
                    Filebytes = outputData.ToArray();
                    Response.ContentType = "application/pdf";
                    Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf");
                    Response.Cache.SetCacheability(HttpCacheability.NoCache);
                    Response.BinaryWrite(Filebytes);
                    Response.End();
                    GridView1.AllowPaging = true;
                    GridView1.DataBind();
                }
            }
        }

这是我生成PDF文件的方式。

using (MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text))
        {
            mm.Subject = txtSubject.Text;
            mm.Body = txtBody.Text;
            if (fuAttachment.HasFile)
            {
                string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
                mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
            }
            mm.IsBodyHtml = false;
            SmtpClient smtp = new SmtpClient();
            smtp.Host = "smtp.gmail.com";
            smtp.EnableSsl = true;
            NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
            smtp.UseDefaultCredentials = true;
            smtp.Credentials = NetworkCred;
            smtp.Port = 587;
            smtp.Send(mm);
            ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email sent.');", true);
        }

这是我通过上传控制附件文件发送电子邮件的方式。＆＃34; fuAttachment＆＃34;是我上传控件的ID，有没有办法让附件自动生成？任何帮助表示赞赏，谢谢先进的人。

Answer 1

您只需要创建新的Attachment实例，并将其添加到mailmessage实例中的attatchments集合中。

如果您有文件存储在硬盘驱动器上并且您知道路径：

Attachment attachment = new Attachment("FILE_PATH", 
                     MediaTypeNames.Application.Octet);
mm.Attachments.Add(attachment);

如果你在内存中有字节数组，那么：

Stream stream = new MemoryStream(byteArray);
Attachment attachment = new Attachment(stream, MediaTypeNames.Application.Octet);
mm.Attachments.Add(attachment);

如果你有流：

Attachment attachment = new Attachment(fileStream, MediaTypeNames.Application.Octet);
mm.Attachments.Add(attachment);

电子邮件服务c＃asp.net的自动附件文件

1 个答案: