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using MailKit;
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using MailKit.Net.Imap;
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using MailKit.Search;
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using MailKit.Security;
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using MimeKit;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Common;
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using Common.Extensions;
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namespace Common.Tools.Email
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{
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/// <summary>
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/// 邮件接收Help
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/// </summary>
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public class MailReceiveHelper
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{
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///// <summary>
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///// 设置设置收件人信息
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///// </summary>
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///// <returns></returns>
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//public static SendServerConfigurationEntity SetSendMessage()
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//{
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// var sendServerConfiguration = new SendServerConfigurationEntity
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// {
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// SmtpHost = ConfigurationManager.AppSettings["SmtpServer"],
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// SmtpPort = int.Parse(ConfigurationManager.AppSettings["SmtpPort"]),
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// IsSsl = Convert.ToBoolean(ConfigurationManager.AppSettings["IsSsl"]),
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// MailEncoding = ConfigurationManager.AppSettings["MailEncoding"],
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// SenderAccount = ConfigurationManager.AppSettings["SenderAccount"],
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// SenderPassword = ConfigurationManager.AppSettings["SenderPassword"]
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// };
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// return sendServerConfiguration;
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//}
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/// <summary>
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/// 接收符号条件的Email 队列
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/// </summary>
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/// <param name="sendServerConfiguration">收件人Email配置信息</param>
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/// <param name="searchQuery">接收邮件的条件 示例 SearchQuery.SubjectContains("MimeKit").Or(SearchQuery.SubjectContains("MailKit")).Or(SearchQuery.DeliveredAfter(DateTime.Parse("2016-9-1")))</param>
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/// <param name="MailIdList">如果有EailID 这是读取Email数据 则searchQuery 失效</param>
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/// <param name="PartPath">附件的保存地址 有指定则保存附件 MailIdList不为空的清空下</param>
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/// <returns></returns>
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public static List<MailBodyEntity> ReceiveEmailHead(SendServerConfigurationEntity sendServerConfiguration, SearchQuery searchQuery=null,long[] MailIdList=null,string PartPath=null)
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{
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var getlist = new List<MailBodyEntity>();
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try
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{
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if (sendServerConfiguration == null)
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{
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throw new ArgumentNullException();
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}
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// using (var client = new ImapClient(new ProtocolLogger(MailMessage.CreateMailLog())))
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using (var client = new ImapClient())
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{
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if (sendServerConfiguration.IsSsl)
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{
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client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort, SecureSocketOptions.SslOnConnect);
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}
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else
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{
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client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort, SecureSocketOptions.None);
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}
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client.Authenticate(sendServerConfiguration.SenderAccount, sendServerConfiguration.SenderPassword);
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client.Inbox.Open(FolderAccess.ReadOnly);
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if (MailIdList == null)
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{
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if (searchQuery == null) {
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searchQuery = SearchQuery.All;
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}
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var uids = client.Inbox.Search(searchQuery);
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var items = client.Inbox.Fetch(uids, MessageSummaryItems.UniqueId | MessageSummaryItems.All);
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foreach (var uid in items)
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{
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var newhead = new MailBodyEntity
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{
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UniqueId = uid.UniqueId.Id,
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Subject = uid.Envelope.Subject
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,
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SendTime = uid.Date.DateTime.ToTimeStamp()
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};
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foreach (var from in uid.Envelope.From)
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{
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newhead.Sender += "," + from.GetType().GetProperty("Address").GetValue(from).ToString();
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}
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if (newhead.Sender.IsNotNull())
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{
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newhead.Sender = newhead.Sender.Substring(1, newhead.Sender.Length - 1);
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}
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getlist.Add(newhead);
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}
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}
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else if (MailIdList.Length > 0) {
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var udilist = new List<UniqueId>();
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foreach (var id in MailIdList) {
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var newuid = new UniqueId((uint)id);
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udilist.Add(newuid);
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}
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foreach (var uid in udilist) {
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var message = client.Inbox.GetMessage(uid);
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var newmailbody = new MailBodyEntity
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{
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UniqueId = uid.Id,
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MessageId=message.MessageId,
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Subject = message.Subject
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,
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SendTime = message.Date.DateTime.ToTimeStamp()
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};
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newmailbody.MailTextBody = message.HtmlBody;
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foreach (var from in message.From)
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{
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newmailbody.Sender += "," + from.GetType().GetProperty("Address").GetValue(from).ToString();
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}
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if (newmailbody.Sender.IsNotNull())
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{
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newmailbody.Sender = newmailbody.Sender.Substring(1, newmailbody.Sender.Length - 1);
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}
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//保存附件
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if (PartPath.IsNotNull()) {
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var path = PartPath;
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Directory.CreateDirectory(path);
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foreach (var file in message.Attachments.OfType<MimePart>()) {
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file.FileName = file.FileName.TrimAll();
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string filePath = path+"/"+uid.Id.ToString()+"_"+file.FileName;
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using (var stream = File.Create(filePath))
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{
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file.Content.DecodeTo(stream);
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}
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newmailbody.MailFiles.Add(new MailFile { MailFilePath=filePath,FileName=file.FileName });
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}
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}
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getlist.Add(newmailbody);
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}
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}
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client.Disconnect(true);
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}
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}
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catch(Exception ex){
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var msg = ex.Message;
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}
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return getlist;
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}
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/// <summary>
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/// 接收下载邮件
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/// </summary>
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/// <param name="sendServerConfiguration">收件人Email配置信息 </param>
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/// <param name="searchQuery">示例 SearchQuery.SubjectContains("MimeKit").Or(SearchQuery.SubjectContains("MailKit")).Or(SearchQuery.DeliveredAfter(DateTime.Parse("2016-9-1")))</param>
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public static void DownloadBodyParts(SendServerConfigurationEntity sendServerConfiguration, SearchQuery searchQuery)
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{
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using (var client = new ImapClient())
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{
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if (sendServerConfiguration.IsSsl)
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{
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client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort, SecureSocketOptions.SslOnConnect);
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}
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else
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{
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client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort, SecureSocketOptions.None);
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}
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client.Authenticate(sendServerConfiguration.SenderAccount, sendServerConfiguration.SenderPassword);
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client.Inbox.Open(FolderAccess.ReadOnly);
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// 搜索Subject标题包含“MimeKit”或“MailKit”的邮件
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var query = searchQuery;
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var uids = client.Inbox.Search(query);
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// 获取搜索结果的摘要信息（我们需要UID和BODYSTRUCTURE每条消息，以便我们可以提取文本正文和附件）
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var items = client.Inbox.Fetch(uids, MessageSummaryItems.UniqueId | MessageSummaryItems.BodyStructure);
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foreach (var item in items)
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{
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// 确定一个目录来保存内容
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var directory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "/MailBody", item.UniqueId.ToString());
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Directory.CreateDirectory(directory);
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// IMessageSummary.TextBody是一个便利的属性，可以为我们找到“文本/纯文本”的正文部分
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var bodyPart = item.TextBody;
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// 下载'text / plain'正文部分
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var body = (TextPart)client.Inbox.GetBodyPart(item.UniqueId, bodyPart);
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// TextPart.Text是一个便利的属性，它解码内容并将结果转换为我们的字符串
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var text = body.Text;
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File.WriteAllText(Path.Combine(directory, "body.txt"), text);
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// 现在遍历所有附件并将其保存到磁盘
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foreach (var attachment in item.Attachments)
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{
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// 像我们对内容所做的那样下载附件
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var entity = client.Inbox.GetBodyPart(item.UniqueId, attachment);
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// 附件可以是message / rfc822部件或常规MIME部件
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var messagePart = entity as MessagePart;
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if (messagePart != null)
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{
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var rfc822 = messagePart;
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var path = Path.Combine(directory, attachment.PartSpecifier + ".eml");
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rfc822.Message.WriteTo(path);
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}
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else
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{
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var part = (MimePart)entity;
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// 注意：这可能是空的，但大多数会指定一个文件名
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var fileName = part.FileName;
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var path = Path.Combine(directory, fileName);
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// decode and save the content to a file
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using (var stream = File.Create(path))
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part.Content.DecodeTo(stream);
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}
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}
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}
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client.Disconnect(true);
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}
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}
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}
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}
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