How to get all ITEMS from PublicFolders folders and subfolders using the EWS Managed API

Question

How to get all items from "public folders" and its "subfolders" in Exchange Server2010 managed uisng API

rootfolder = Folder.Bind(service,WellKnownFolderName.PublicFoldersRoot); rootfolder.Load(); foreach (Folder folder in rootfolder.FindFolders(new FolderView(int.MaxValue))) { FindItemsResults<Item> findResults = folder.FindItems(iv); foreach (Item item in findResults) { //get item info; } } 

"If I like it, I don’t get the items present in subfolders. Folders in folders also do not support deep crawl requests. How can I get items from subfolders of public folders ???"

Answer 1

For all folders to use the following code:

 public void GetAllFolders(ExchangeService service, List<Folder> completeListOfFolderIds) { FolderView folderView = new FolderView(int.MaxValue); FindFoldersResults findFolderResults = service.FindFolders(WellKnownFolderName.PublicFoldersRoot, folderView); foreach (Folder folder in findFolderResults) { completeListOfFolderIds.Add(folder); FindAllSubFolders(service, folder.Id, completeListOfFolderIds); } } private void FindAllSubFolders(ExchangeService service, FolderId parentFolderId, List<Folder> completeListOfFolderIds) { //search for sub folders FolderView folderView = new FolderView(int.MaxValue); FindFoldersResults foundFolders = service.FindFolders(parentFolderId, folderView); // Add the list to the growing complete list completeListOfFolderIds.AddRange(foundFolders); // Now recurse foreach (Folder folder in foundFolders) { FindAllSubFolders(service, folder.Id, completeListOfFolderIds); } } 

To get all the items:

 List<Folder> completeListOfFolderIds = new List<Folder>(); //Fills list with all public folders and subfolders GetAllFolders(service, completeListOfFolderIds); foreach(Folder folder in completeListOfFolderIds) { ItemView itemView = new ItemView(int.MaxValue); FindItemsResults<Item> searchResults = service.FindItems(folder.Id, itemView); //do something with item list } 

Answer 2

You need to recursively traverse the shared folder tree. You cannot perform a deep crawl of public folders.

Answer 3

 public IEnumerable<Item> FindItemsInSubfolders(FolderId root, SearchFilter itemsFilter) { foreach (Folder folder in service.FindFolders(root, new FolderView(int.MaxValue) { Traversal = FolderTraversal.Deep })) foreach(Item item in service.FindItems(folder.Id, itemsFilter, new ItemView(int.MaxValue))) yield return item; foreach (Item item in service.FindItems(root, itemsFilter, new ItemView(int.MaxValue))) yield return item; } 

Answer 4

 List<Folder> completeListOfFolderIds = new List<Folder>(); GetAllFolders(service, completeListOfFolderIds); foreach (Folder folder in completeListOfFolderIds) { List<Item> results = GetItems(service, folder); } public void GetAllFolders(ExchangeService service, List<Folder> completeListOfFolderIds) { ExtendedPropertyDefinition isHiddenProp = new ExtendedPropertyDefinition(0x10f4, MapiPropertyType.Boolean); FolderView folderView = new FolderView(int.MaxValue); folderView.PropertySet = new PropertySet(isHiddenProp,FolderSchema.DisplayName, FolderSchema.Id, FolderSchema.ChildFolderCount, FolderSchema.TotalCount, FolderSchema.ParentFolderId, FolderSchema.WellKnownFolderName); List<SearchFilter> searchFilterCollection = new List<SearchFilter>(); searchFilterCollection.Add(new SearchFilter.IsEqualTo(isHiddenProp, false)); SearchFilter searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, searchFilterCollection.ToArray()); Folder rootfolder = Folder.Bind(service, WellKnownFolderName.MsgFolderRoot); // Indicate a Traversal value of Deep, so that all subfolders are retrieved. folderView.Traversal = FolderTraversal.Deep; rootfolder.Load(); //FindFoldersResults findFolderResults = service.FindFolders(WellKnownFolderName.MsgFolderRoot, folderView); FindFoldersResults findFolderResults = rootfolder.FindFolders(searchFilter, folderView); foreach (Folder folder in findFolderResults) { completeListOfFolderIds.Add(folder); //List<Item> results = GetItems(service, folder); FindAllSubFolders(service, folder.Id, completeListOfFolderIds); } } private void FindAllSubFolders(ExchangeService service, FolderId parentFolderId, List<Folder> completeListOfFolderIds) { FolderView folderView = new FolderView(int.MaxValue); FindFoldersResults foundFolders = service.FindFolders(parentFolderId, folderView); completeListOfFolderIds.AddRange(foundFolders); // Now recurse foreach (Folder folder in foundFolders) { FindAllSubFolders(service, folder.Id, completeListOfFolderIds); } } private List<Item> GetItems(ExchangeService service ,Folder folder) { if (service == null) { return null; } List<Item> items = new List<Item>(); PropertySet propertySet = new PropertySet(BasePropertySet.FirstClassProperties); const Int32 pageSize = 50; ItemView itemView = new ItemView(pageSize); itemView.PropertySet = propertySet; FindItemsResults<Item> searchResults = null; try { do { searchResults = service.FindItems(folder.Id,itemView); items.AddRange(searchResults.Items); itemView.Offset += pageSize; } while (searchResults.MoreAvailable); } catch (Exception ex) { } return items; }