如何使用Exchange Web Service获取日历（包含循环会议）

本文介绍如何使用EWS代理类调用Exchange的日历

（1）首先生成代理类

          

ExchangeServiceBinding _ExchangeBinding = new ExchangeServiceBinding();
          _ExchangeBinding.Credentials = new NetworkCredential(username, password, domain);
          _ExchangeBinding.Url = Helper.GetWebconfig("exchangewebservice");

     

（2）定义请求的属性

  请注意：在定义请求属性时，一定要定义CalendarViewType属性，默认的日历返回是不含循环日历的，

如果需要返回循环会议请求，就需要等译CalendarView

FindItemType findItemRequest = new FindItemType();

  ItemResponseShapeType itemProperties = new ItemResponseShapeType();    
  itemProperties.BaseShape = DefaultShapeNamesType.AllProperties;          
   findItemRequest.ItemShape = itemProperties;

    //我们查找的是日历      
DistinguishedFolderIdType[] folderIDs = { new DistinguishedFolderIdType { Id = DistinguishedFolderIdNameType.calendar } };         

  findItemRequest.ParentFolderIds = folderIDs;

      //增加搜索的日历范围，红色代码要饭服务器返回循环会议

          CalendarViewType cldview = new CalendarViewType();           
          cldview.StartDate = dt.AddDays(-2);          
          cldview.EndDate = dt.AddDays(2);
           findItemRequest.Item = cldview;                      

            findItemRequest.Traversal = ItemQueryTraversalType.Shallow;

（3）定义服务器返回的数据属性           

  

   FindItemResponseType findItemResponse = _ExchangeBinding.FindItem(findItemRequest);

     
          ArrayOfResponseMessagesType responseMessages = findItemResponse.ResponseMessages;
          ResponseMessageType[] responseMessage = responseMessages.Items;

      

          foreach (ResponseMessageType rmt in responseMessage)
          {
              #region 结果


              FindItemResponseMessageType msgType = (rmt as FindItemResponseMessageType);

              if (msgType.RootFolder == null)
                  continue;


              FindItemParentType parentType = msgType.RootFolder;


              object obj = parentType.Item;
              if (obj is ArrayOfRealItemsType)
              {
                  ArrayOfRealItemsType items = (obj as ArrayOfRealItemsType);
                  if (items != null)
                  {
                      if (items.Items != null)
                      {
                          foreach (ItemType item in items.Items)
                          {
                              CalendarItemType calItem = item as CalendarItemType;
                              DataRow row = table.NewRow();
                              row["roomid"] = 1;
                              row["guid"] = guid;
                              row["begintime"] = calItem.Start.AddHours(timezone);
                              row["endtime"] = calItem.End.AddHours(timezone);
                              row["location"] = calItem.Location;
                              row["title"] = calItem.Subject;
                              row["displayname"] = calItem.Organizer.Item.Name;
                              if (row["endtime"].ToString() != "")
                              {
                                  table.Rows.Add(row);
                              }
                          }
                      }
                  }

              }

              #endregion
          }