从exchange server 获取out of office 信息

using System;
using System.Net;
using GetOFFS.sg.com.ncs.webmail;
using Microsoft.Exchange.WebServices;
using Microsoft.Exchange.WebServices.Data;


namespace GetOFFS
{

    public class Program
    {
        public static string url = "https://exchangeserveraddress/ews/Exchange.asmx";
        static void Main(string[] args)
        {
            ExchangeServiceBinding esb = new ExchangeServiceBinding();
            esb.Credentials = new NetworkCredential("username", "password", "domain");
            esb.Url = url;
            esb.RequestServerVersionValue = new RequestServerVersion();
            esb.RequestServerVersionValue.Version = ExchangeVersionType.Exchange2010_SP1;
            GetMessageTrackingReportRequestType gmt = new GetMessageTrackingReportRequestType();
            
            GetMailTipsType gmType = new GetMailTipsType();
            gmType.MailTipsRequested = new MailTipTypes();
            gmType.MailTipsRequested = MailTipTypes.OutOfOfficeMessage;
            gmType.Recipients = new EmailAddressType[1];
            EmailAddressType rcip = new EmailAddressType();
            rcip.EmailAddress = "target@emailaddress";
            gmType.Recipients[0] = rcip;
            EmailAddressType sendAs = new EmailAddressType();
            sendAs.EmailAddress = "target@emailaddress";
            gmType.SendingAs = sendAs;

            GetMailTipsResponseMessageType gmResponse = esb.GetMailTips(gmType);
            if (gmResponse.ResponseClass == ResponseClassType.Success)
            {
                if (gmResponse.ResponseMessages[0].MailTips.OutOfOffice.ReplyBody.Message != "")
                {
                    //User Out   
                    Console.WriteLine(gmResponse.ResponseMessages[0].MailTips.OutOfOffice.ReplyBody.Message);
                }
                else
                {
                    //user In   
                }

            } 
        }
    }
}