public FolderDescriptor(PairIDs IDs, IEFolder folder) { string name = folder.GetStringProp(MAPIConst.PR_DISPLAY_NAME); string containerClass = folder.GetStringProp(MAPIConst.PR_CONTAINER_CLASS); int storeSupportMask = folder.GetLongProp(MAPIConst.PR_STORE_SUPPORT_MASK); int contentCount = folder.GetLongProp(MAPIConst.PR_CONTENT_COUNT); Init(IDs, name, containerClass, storeSupportMask, contentCount); }