[C#]exchange发送，收件箱操作类

最近项目中需要用到exchange的操作，就参照msdn弄了一个简单的操作类。目前先实现了，发送邮件和拉取收件箱的功能，其他的以后在慢慢的添加。

using Microsoft.Exchange.WebServices.Data;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace WebSite.Utilities.Mail
{
/// <summary>
/// exchange邮件客户端类
/// </summary>
public class ExChangeMailClient
{
/// <summary>
/// exchange服务对象
/// </summary>
private static ExchangeService _exchangeService = new ExchangeService(ExchangeVersion.Exchange2010_SP1);
/// <summary>
/// 获取收件箱
/// </summary>
/// <param name="userId">当前用户名</param>
/// <param name="pwd">密码</param>
/// <param name="domain">域</param>
/// <param name="pageSize">一次加载的数量</param>
/// <param name="offset">偏移量</param>
/// <returns></returns>
public static List<Email> GetInbox(string userId, string pwd, string domain, int pageSize, int offset)
{
try
{
if (string.IsNullOrEmpty(userId) || string.IsNullOrEmpty(pwd) || string.IsNullOrEmpty(domain))
{
throw new ArgumentNullException("当前用户信息为空，无法访问exchange服务器");
}
List<Email> lstEmails = new List<Email>();
_exchangeService.Credentials = new NetworkCredential(userId, pwd, domain);
_exchangeService.Url = new Uri(WebConfig.ExchangeServerUrl);
ItemView view = new ItemView(pageSize, offset);
FindItemsResults<Item> findResults = _exchangeService.FindItems(WellKnownFolderName.Inbox, SetFilter(), view);
foreach (Item item in findResults.Items)
{
item.Load(PropertySet.FirstClassProperties);

//转化为EmailMessage获取 获取邮件详情
var currentEmail = (Microsoft.Exchange.WebServices.Data.EmailMessage)(item);
List<string> ccRecipientsEmailLists = new List<string>();
List<string> bccRecipientsEmailLists = new List<string>();
foreach (var cc in currentEmail.CcRecipients)
{
ccRecipientsEmailLists.Add(cc.Address);
}
foreach (var bcc in currentEmail.BccRecipients)
{
bccRecipientsEmailLists.Add(bcc.Address);
}
lstEmails.Add(new Email()
{
ExchangeItemId = item.Id.ChangeKey,
body = item.Body.Text,
Mail_cc = string.Join(";", ccRecipientsEmailLists.ToArray()),
Mail_bcc = string.Join(";", bccRecipientsEmailLists.ToArray()),
Mail_from = currentEmail.From.Address,
IsRead = item.IsNew,
Subject = item.Subject,
CreateOn = item.DateTimeCreated
});

}
return lstEmails;
}
catch (Exception ex)
{

throw ex;
}

}

/// <summary>
/// 根据用户邮件地址返回用户的未读邮件数
/// </summary>
/// <param name="user"></param>
/// <returns></returns>
public static int GetUnReadMailCountByUserMailAddress(string userId, string pwd, string domain, string email)
{
int unRead = 0;
try
{
_exchangeService.Credentials = new NetworkCredential(userId, pwd, domain);
_exchangeService.Url = new Uri(WebConfig.ExchangeServerUrl);
_exchangeService.ImpersonatedUserId = new Microsoft.Exchange.WebServices.Data.ImpersonatedUserId(Microsoft.Exchange.WebServices.Data.ConnectingIdType.SmtpAddress, email);

unRead = Microsoft.Exchange.WebServices.Data.Folder.Bind(_exchangeService, Microsoft.Exchange.WebServices.Data.WellKnownFolderName.Inbox).UnreadCount;
}
catch (Exception ex)
{
throw ex;
}
return unRead;
}
/// <summary>
/// 过滤器
/// </summary>
/// <returns></returns>
private static SearchFilter SetFilter()
{
List<SearchFilter> searchFilterCollection = new List<SearchFilter>();
//searchFilterCollection.Add(new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));
//searchFilterCollection.Add(new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, true));
//筛选今天的邮件
SearchFilter start = new SearchFilter.IsGreaterThanOrEqualTo(EmailMessageSchema.DateTimeCreated, Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd 00:00:00")));
SearchFilter end = new SearchFilter.IsLessThanOrEqualTo(EmailMessageSchema.DateTimeCreated, Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd 23:59:59")));
searchFilterCollection.Add(start);
searchFilterCollection.Add(end);
SearchFilter filter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, searchFilterCollection.ToArray());
return filter;
}
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
public static void SendMail(Email email, string userId, string pwd, string domain)
{
try
{
_exchangeService.Credentials = new NetworkCredential(userId, pwd, domain);
_exchangeService.Url = new Uri(WebConfig.ExchangeServerUrl);
//发送人
Mailbox mail = new Mailbox(email.Mail_from);
//邮件内容
EmailMessage message = new EmailMessage(_exchangeService);
string[] strTos = email.Mail_to.Split(';');
//接收人
foreach (string item in strTos)
{
if (!string.IsNullOrEmpty(item))
{
message.ToRecipients.Add(item);
}
}
//抄送人
foreach (string item in email.Mail_cc.Split(';'))
{
if (!string.IsNullOrEmpty(item))
{
message.CcRecipients.Add(item);
}

}
//邮件标题
message.Subject = email.Subject;
//邮件内容
message.Body = new MessageBody(email.body);
//发送并且保存
message.SendAndSaveCopy();

}
catch (Exception ex)
{
throw new Exception("发送邮件出错，" + ex.Message + "\r\n" + ex.StackTrace);
}
}
}
}