如何以编程方式单击电子邮件正文中的 .zip link

Question

这可能非常简单，但我对编码非常陌生，提前抱歉。

目前我有一个按钮 4，它会通过我的收件箱读取具有特定主题的邮件，如果满足条件，它会首先在列表视图中显示邮件 class 属性，但我希望它也下载 link 在每封电子邮件中找到。

这是一个 .zip link，当从电子邮件中单击 link 时，它将下载 zip。我希望它自动下载单击 button4 时找到的所有 link。

我将展示我的 button4 代码，然后是电子邮件的示例。

button4代码：

private void button4_Click(object sender, EventArgs e)
{
    EmailConnect();
    TimeSpan ts = new TimeSpan(0, -2, 0, 0);
    DateTime date = DateTime.Now.Add(ts);
    SearchFilter.IsGreaterThanOrEqualTo filter = new SearchFilter.IsGreaterThanOrEqualTo(ItemSchema.DateTimeReceived, date);

    if (service != null)
    {
        FindItemsResults<Item> findResults = service.FindItems(WellKnownFolderName.Inbox, filter, new ItemView(50));

        foreach (Item item in findResults)
        {

            EmailMessage message = EmailMessage.Bind(service, item.Id);
            string subject = message.Subject.ToString();

            if (subject.Contains("NFIRS File Validation"))
            {
                ListViewItem listitem = new ListViewItem(new[]
                {message.DateTimeReceived.ToString(), message.From.Name.ToString() + "(" + message.From.Address.ToString() + ")", message.Subject, ((message.HasAttachments) ? "Yes" : "No")});

                lstMsg.Items.Add(listitem);
            }
        }
        
        if (findResults.Items.Count <= 0)
        {
            lstMsg.Items.Add("No Messages found!!");
        }
    }
}

示例电子邮件：

NFIRS File Validation

The NFIRS File Validation service has completed processing your files. Please follow this link to retrieve the zip file containing your results.

https://www.nfirs.fema.gov/biarchive/xxxxxxxxx_xxxxxxxxx.zip

This file will be deleted after 28 days.

If you have any questions, please do not reply to this email. Instead, please contact the NFIRS Support Center.

Answer 1

这基本上是 link @DonBoitnott 评论的唯一额外步骤是将每封电子邮件的正文放入属性列表中进行解析并确保将其另存为与 URL 在原始电子邮件

中的文件名相同

    private void handleLinks(List<EmailProperties> properties)
    {
        using (WebClient client = new WebClient())
        {
            foreach (var prop in properties)
            {
                string link = searchForLink(prop.Body);
                string fileName = MyExtensions.Between(link, "https://www.nfirs.fema.gov/biarchive/", ".zip");
                string saveTo = string.Format((@"C:\Users\Foo\Downloads\{0}.zip"), fileName);
                prop.Name = fileName;

                client.DownloadFile(link, saveTo);
            }
        }
    }

    private string searchForLink(string body)
    {
        return MyExtensions.Between(body, "results.\r\n\r\n", "\r\n\r\nThis file will");
    }

如何以编程方式单击电子邮件正文中的 .zip link

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