如何在exchangeserver2010uisng托管API中检索“公用文件夹”及其“子文件夹”中的所有项目？？？rootfolder=Folder.Bind(service,WellKnownFolderName.PublicFoldersRoot);rootfolder.Load();foreach(Folderfolderinrootfolder.FindFolders(newFolderView(int.MaxValue))){FindItemsResultsfindResults=folder.FindItems(iv);foreach(ItemiteminfindResu