相关疑难解决方法(0)

我正在使用一个库来生成ics文件(iCalendar或RFC 2445,或者你称之为),这些库将内容序列化为MemoryStream,或者实际上是任何类型的流.

这是我的一大堆代码:

    public ActionResult iCal(int id) {

        MyApp.Event kiEvt = evR.Get(id);

        // Create a new iCalendar
        iCalendar iCal = new iCalendar();

        // Create the event, and add it to the iCalendar
        DDay.iCal.Components.Event evt = iCal.Create<DDay.iCal.Components.Event>();

        // Set information about the event
        evt.Start = kiEvt.event_date;
        evt.End = evt.Start.AddHours(kiEvt.event_duration); // This also sets the duration            
        evt.Description = kiEvt.description;
        evt.Location = kiEvt.place;
        evt.Summary = kiEvt.title;

        // Serialize (save) the iCalendar
        iCalendarSerializer serializer = new iCalendarSerializer(iCal);


        System.IO.MemoryStream fs = new System.IO.MemoryStream();

        serializer.Serialize(fs, System.Text.Encoding.UTF8); …

我能够通过邮件发送附件,但附件内容为空白,大小显示为0字节.

在通过互联网进行一些搜索后发现我们需要将内存流位置重置为0才能从头开始.

我也试过了,但它似乎无法正常工作.你能帮忙吗？

请在下面找到我的代码段:

注意:我能够保存工作簿,并且数据存在于保存的工作簿中.

        MemoryStream memoryStream = new MemoryStream();

        StreamWriter writer = new StreamWriter(memoryStream);
        writer.Write(xlWorkbook);
        writer.Flush();
        memoryStream.Position = 0;
        MailMessage mail = new MailMessage();
        SmtpClient SmtpServer = new SmtpClient("smtpclient");
        mail.From = new MailAddress("from@gmail.com");
        mail.To.Add("To@gmail.com");
        mail.Subject = "Entry";
        mail.Body = "Hello, PFA ";
        System.Net.Mail.Attachment attachment;

        attachment = new System.Net.Mail.Attachment(memoryStream,"xls");
        attachment.ContentDisposition.FileName = "Input" + DateTime.Now.ToString("yyyyMMdd_hhss") + ".xls";
        mail.Attachments.Add(attachment);
        SmtpServer.Port = 465;
        SmtpServer.UseDefaultCredentials = false;
        SmtpServer.Credentials = new System.Net.NetworkCredential("Username", "password");
        SmtpServer.EnableSsl = true;
        SmtpServer.Send(mail);
        writer.Dispose();

我在电子邮件中遇到附件问题.每隔几天,用户就无法在电子邮件中找到预期的附件.这似乎发生了大约10-20分钟,然后它纠正了自己意味着后来的电子邮件将包含附件.我不确定这背后的原因是什么.这就是我的代码的样子

模型

public class EmailAttachment
{
    public string FileName { get; set; }
    public byte[] FileContent { get; set; }
} 

代码触发器发送电子邮件

var emailAttachment= new EmailAttachment();
emailAttachment.FileContent = CreatePDFFile();
emailAttachment.FileName = "file.pdf";
EmailGeneratedCertificate(emailAttachment);

电子邮件准备代码

public void EmailGeneratedCertificate(EmailAttachment file)
{
    //file.FileContent is a byte array  
    var ms = new MemoryStream(file.FileContent);
    ms.Position = 0;
    var contentType = new System.Net.Mime.ContentType(System.Net.Mime.MediaTypeNames.Application.Pdf);

    var from = "xx@x.com";
    var fromTargetName = "XXX";
    var recepient="xx2@x.com"
    var subject = "Attachment";
    var body="<strong>Please find attachment.</strong>"
    var attachment = new Attachment(ms, …