获取exchangeserve的calendar的item

在做项目中用到了这段代码。感觉不错。为了方便大家日后的查找，放在这里

http://weblogs.asp.net/psperanza/archive/2008/03.aspx

private List<CalendarInfo> GetCalendarEvents()
{
    List<CalendarInfo> calendarEvents = new List<CalendarInfo>();

    ExchangeServiceBinding esb = 
        new ExchangeHelper().GetExchangeBinding("myUserName", "myPassword", "myDomain");

    // Form the FindItem request.
    FindItemType findItemRequest = new FindItemType();

    CalendarViewType calendarView = new CalendarViewType();
    calendarView.StartDate = DateTime.Now.AddDays(-1);
    calendarView.EndDate = DateTime.Now.AddDays(1);
    calendarView.MaxEntriesReturned = 100;
    calendarView.MaxEntriesReturnedSpecified = true;

    findItemRequest.Item = calendarView;

    // Define which item properties are returned in the response.
    ItemResponseShapeType itemProperties = new ItemResponseShapeType();
    // Use the Default shape for the response. 
    //itemProperties.BaseShape = DefaultShapeNamesType.IdOnly;
    itemProperties.BaseShape = DefaultShapeNamesType.AllProperties;
    findItemRequest.ItemShape = itemProperties;

    DistinguishedFolderIdType[] folderIDArray =
        new DistinguishedFolderIdType[1];
    folderIDArray[0] = new DistinguishedFolderIdType();
    folderIDArray[0].Id = DistinguishedFolderIdNameType.calendar;

    if (!string.IsNullOrEmpty(criteria.EmailAddress))
    {
        folderIDArray[0].Mailbox = new EmailAddressType();
        folderIDArray[0].Mailbox.EmailAddress = "myEmail.com";
    }
    
    findItemRequest.ParentFolderIds = folderIDArray;

    // Define the traversal type.
    findItemRequest.Traversal = ItemQueryTraversalType.Shallow;

    try
    {
        // Send the FindItem request and get the response.
        FindItemResponseType findItemResponse = 
            esb.FindItem(findItemRequest);

        // Access the response message.
        ArrayOfResponseMessagesType responseMessages =
            findItemResponse.ResponseMessages;
        ResponseMessageType[] rmta = responseMessages.Items;

        int folderNumber = 0;

        foreach (ResponseMessageType rmt in rmta)
        {
            // One FindItemResponseMessageType per folder searched.
            FindItemResponseMessageType firmt = 
                rmt as FindItemResponseMessageType;

            if (firmt.RootFolder == null)
                continue ;

            FindItemParentType fipt = firmt.RootFolder;
            object obj = fipt.Item;

            // FindItem contains an array of items.
            if (obj is ArrayOfRealItemsType)
            {
                ArrayOfRealItemsType items =
                    (obj as ArrayOfRealItemsType);
                if (items.Items == null)
                {
                    folderNumber++;
                }
                else
                {
                    foreach (ItemType it in items.Items)
                    {

                        if (it is CalendarItemType)
                        {
                            CalendarItemType cal = (CalendarItemType)it;
                            CalendarInfo ce = new CalendarInfo();

                            ce.Location = cal.Location;
                            ce.StartTime = cal.Start;
                            ce.EndTime = cal.End;
                            ce.Subject = cal.Subject;
                            ce.Body = GetMeetingBody(esb, cal);

                            calendarEvents.Add(ce);
                        }

                    }

                    folderNumber++;
                }
            }
        }

    }
    catch (Exception e)
    {
        throw;
    }
    finally
    {
        
    }

    return calendarEvents;
}

private string GetMeetingBody(ExchangeServiceBinding binding, CalendarItemType meeting)
{
    string meetingBody = string.Empty;
    CalendarItemType temp = null;

    // Call GetItem on each ItemId to retrieve the 
    // item’s Body property and any AttachmentIds.
    //
    // Form the GetItem request.
    GetItemType getItemRequest = new GetItemType();

    getItemRequest.ItemShape = new ItemResponseShapeType();
    // AllProperties on a GetItem request WILL return 
    // the message body.
    getItemRequest.ItemShape.BaseShape = 
        DefaultShapeNamesType.AllProperties;

    getItemRequest.ItemIds = new ItemIdType[1];
    getItemRequest.ItemIds[0] = (BaseItemIdType)meeting.ItemId;

    // Here is the call to exchange.
    GetItemResponseType getItemResponse =
        binding.GetItem(getItemRequest);

    // We only passed in one ItemId to the GetItem
    // request. Therefore, we can assume that
    // we got at most one Item back.
    ItemInfoResponseMessageType getItemResponseMessage = 
        getItemResponse.ResponseMessages.Items[0] 
        as ItemInfoResponseMessageType;

    if (getItemResponseMessage != null)
    {
        if (getItemResponseMessage.ResponseClass ==
            ResponseClassType.Success 
            && getItemResponseMessage.Items.Items != null 
            && getItemResponseMessage.Items.Items.Length > 0)
        {
            temp = (CalendarItemType)getItemResponseMessage.Items.Items[0];

            if (temp.Body != null)
                meetingBody = temp.Body.Value;
        }
    }

    return meetingBody;
}

private ExchangeServiceBinding GetExchangeBinding(
      string userName, string passwotrd, string domain)
  {

      ExchangeServiceBinding binding = new ExchangeServiceBinding();

      ServicePointManager.ServerCertificateValidationCallback =
              delegate(Object obj, X509Certificate certificate, 
              X509Chain chain, SslPolicyErrors errors)
              {
                  // Replace this line with code to validate server certificate.
                  return true;
              };

      System.Net.WebProxy proxyObject = 
          new System.Net.WebProxy();
      proxyObject.Credentials = 
          System.Net.CredentialCache.DefaultCredentials;

      binding.Credentials = 
          new NetworkCredential(userName, password, domain);
 
      string server = ConfigurationManager.AppSettings["ExchangeServer"] as string;

      if (server == null || string.IsNullOrEmpty(server))
          throw new ArgumentNullException("The Exchange server Url could not be found.");

      binding.Url = server;
      Console.WriteLine("***** " + server);

      binding.Proxy = proxyObject;

      return binding;
  }