Question

刚刚给你一个简单的问题。我之前做了一个小应用程序，最后发送了一封电子邮件给4个收件人。但是，我对地址进行了硬编码。回过头来改变一些事情，我想将地址放在.csv文件中，我会把它读进去。这样，我就可以编辑.csv来控制电子邮件地址了。

我只是不确定如何在代码中设置收件人。显然，MailAddress的变量名必须不同，所以我真的不知道如何设置循环，或者正确的方法是什么。

下面是我使用的代码，并注释掉了我的新代码，该代码将文件中的所有电子邮件地址读入列表。你能否指出我如何从那里发送电子邮件到列表中的所有地址？

谢谢，

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
using System.Data;
using Microsoft.Office.Interop;
using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;
using System.Reflection;
using System.Drawing;
using System.Globalization;

namespace ReportEdit
{
    class sendEmail
    {
        public static void SendMyMail()
        {


           /* !!NEW!! READING IN THE .CSV TO GET LIST OF ADDRESSES. Below comment is old 

            List<string> addyList = new List<string>();
            foreach (string line in File.ReadLines(Properties.Settings.Default.AddyList))
            {
                addyList.Add(line);
            }
            */

            SmtpClient companySmtpClient = new SmtpClient("smtprelay.company.com");

            companySmtpClient.UseDefaultCredentials = true;

            MailAddress from = new MailAddress("ActiveBatchRunReport@company.com", "ActiveBatchRunReport");
            MailAddress to = new MailAddress("GrpDstISOne@company.com", "DstOne");
            MailAddress Recipient1 = new MailAddress("Bill@company.com", "Bill");
            MailAddress Recipient2 = new MailAddress("Tom@company.com", "Tom");
            MailAddress Recipient3 = new MailAddress("Gena@company.com", "Gena");
            MailAddress Recipient4 = new MailAddress("Clifford@company.com", "Clifford");
            MailAddress ccKate = new MailAddress("Kate@company.com", "Kate");


            MailMessage myMail = new System.Net.Mail.MailMessage(from, to);

            myMail.To.Add(Recipient1);
            myMail.To.Add(Recipient2);
            myMail.To.Add(Recipient3);
            myMail.To.Add(Recipient4);

            myMail.CC.Add(ccKate);

            myMail.Subject = "Daily Job Runs";
            myMail.SubjectEncoding = System.Text.Encoding.UTF8;

            myMail.Body = "Attached you will find an Excel spreadsheet" +
            "Total Job counts are listed at the bottom.";

            myMail.BodyEncoding = System.Text.Encoding.UTF8;
            myMail.IsBodyHtml = true;

            myMail.Attachments.Add(new Attachment(@"PathToAttachment"));

            companySmtpClient.Send(myMail);
        }

    }
}

Answer 1

以下是如何做到这一点。

/ * !!新!!阅读.CSV以获取地址列表。以下评论是旧* /

        List<string> addyList = new List<string>();
        foreach (string line in File.ReadLines(Properties.Settings.Default.AddyList))
        {
            addyList.Add(line);
            // to add Name, you need to store emailAddress and name in  certain way so that you can parse Name out of the line in here
        }

        SmtpClient companySmtpClient = new SmtpClient("smtprelay.company.com");

        companySmtpClient.UseDefaultCredentials = true;
        MailAddress from = new MailAddress("ActiveBatchRunReport@company.com", "ActiveBatchRunReport");

        foreach(string address in addyList)
        {
            MailAddress to = new MailAddress(address);
            myMail.To.Add(to)
        }

        MailAddress ccKate = new MailAddress("Kate@company.com", "Kate");
        MailMessage myMail = new System.Net.Mail.MailMessage(from, to);

        myMail.CC.Add(ccKate);

        myMail.Subject = "Daily Job Runs";
        myMail.SubjectEncoding = System.Text.Encoding.UTF8;

        myMail.Body = "Attached you will find an Excel spreadsheet" +
        "Total Job counts are listed at the bottom.";

        myMail.BodyEncoding = System.Text.Encoding.UTF8;
        myMail.IsBodyHtml = true;

        myMail.Attachments.Add(new Attachment(@"PathToAttachment"));

        companySmtpClient.Send(myMail);

Answer 2

我建议您将addyList设为字典而不是列表。这将允许您存储电子邮件和名称，因为您似乎在硬编码版本中使用这两者。假设你这样做，并且成功地解析了你的CSV（它看起来你还没有完全存在），如果用你的代码替换类似的硬编码调用，下面应该可以解决这个问题：

foreach (var kvp in addyList) {
    myMail.To.Add(new MailAddress(kvp.Key, kvp.Value);
}

此循环假定您使用电子邮件地址作为键，并将名称作为字典中的值。如果你交换它，只需交换.Key和.Value用法。

此外，如果app.config或web.config设置可以使用CSV，则CSV可能会出现问题。我建议您将其作为一种选择。

Answer 3

如果我理解正确，您可以获取CSV文件的内容。使用该列表，您可以将它们添加到＆＃39; To＆＃39;邮件消息对象的属性。

        List<string> addyList = new List<string>();

        //populate string list from csv file

        MailMessage myMail = new System.Net.Mail.MailMessage();
        //populate this
        myMail.From = new MailAddress("ActiveBatchRunReport@company.com", "ActiveBatchRunReport");
        myMail.To.Add(string.Join(";", addyList));

如果您需要有关csv文件解析的帮助，请告诉我。

C＃使用地址列表发送电子邮件

3 个答案: