If this event occurred during AnnCodecs.LoadAsync then the value of this property is the type of the AnnObject being loaded.
If this event occurred during AnnCodecs.Save, then the value of this property is the type of the AnnObject being saved. The object itself is in the AnnObject property.
For an example, refer to AnnSerializeOptions and AnnDeserializeOptions.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2