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{    /// 
    /// exchange邮件客户端类    /// 
    public class ExChangeMailClient    {        /// 
        /// exchange服务对象        /// 
        private static ExchangeService _exchangeService = new ExchangeService(ExchangeVersion.Exchange2010_SP1);        /// 
        /// 获取收件箱        /// 
        /// 当前用户名        /// 密码        /// 域        /// 一次加载的数量        /// 偏移量        /// 
             public static List
     
       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
      
        lstEmails = new List
       
        ();                _exchangeService.Credentials = new NetworkCredential(userId, pwd, domain);                _exchangeService.Url = new Uri(WebConfig.ExchangeServerUrl);                ItemView view = new ItemView(pageSize, offset);                FindItemsResults
        
          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;            }        }        /// 
        /// 根据用户邮件地址返回用户的未读邮件数        /// 
        ///         /// 
             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;        }        /// 
        /// 过滤器        /// 
        /// 
             private static SearchFilter SetFilter()        {            List
     
       searchFilterCollection = new List
      
       ();            //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;        }        /// 
       
        /// 发送邮件        /// 
        /// 
               /// 
               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);            }        }    }}