EWS - Find last calendar modifications

• Monday, April 30, 2012 5:42 AM

   

   
  

  0

  Hello,

  I'm new user of EWS web services and could handled different functionnalities to make them work(FindItem, FindFolder,getItem, etc...) But I could not resolve this one:

  I try to find all latest modification or creation of appointments in a calendar folder. My first idea was to create a FindItemType request with restriction on LastModificationDate extended field( PropertyId = 0x3008) and call the findItem method. I've tryed the following code, but result is always empty ( aorit.Items == null):

   _esb = new ExchangeServiceBinding();
              _esb.Url = serviceUrl;
              _esb.Credentials = new NetworkCredential
              {                
                  UserName = userName,
                  Password = password,
                  Domain = domain
              };

  ...

              FindItemType fit = new FindItemType
              {
                  ItemShape = new ItemResponseShapeType
                  {
                      BaseShape = DefaultShapeNamesType.IdOnly
                  },
                  ParentFolderIds = folderTypes,
                  Traversal = ItemQueryTraversalType.Shallow,
                  Restriction = new RestrictionType
                  {
                      Item = new IsGreaterThanOrEqualToType
                      {
                          FieldURIOrConstant = new FieldURIOrConstantType
                          {
                              Item = new ConstantValueType { Value = lastModifiedDateSearched.ToUniversalTime().ToString("u") }
                          },
                          Item = new PathToExtendedFieldType
                          {
                              DistinguishedPropertySetIdSpecified = true,
                              DistinguishedPropertySetId = DistinguishedPropertySetType.Appointment,
                              PropertyType = MapiPropertyTypeType.SystemTime,
                              PropertyId = 0x3008,
                              PropertyIdSpecified = true,
                          }
                      }
                  }
              };
  
              FindItemResponseType response = _esb.FindItem(fit);
  
              List<ItemIdType> res = new List<ItemIdType>();
              foreach (FindItemResponseMessageType firmt in response.ResponseMessages.Items.Where(c => c.IsNotNull()))
              {
                  if (firmt.RootFolder.IsNotNull())
                  {
                      ArrayOfRealItemsType aorit = firmt.RootFolder.Item as ArrayOfRealItemsType;
                      if (aorit != null && aorit.Items.IsNotNull())
                      {
                          foreach (ItemType item in aorit.Items)
                          {
                              if (item.ItemId.IsNotNull())
                              {
                                  res.Add(item.ItemId);
                              }
                          }
                      }
                  }
              }

  Does anybody knows if my query seems correct? Do I use the right way to do this?

  Thank's for your help.

  
  

  • Edited by JCC74 Monday, April 30, 2012 6:04 AM
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