private static Collection <Folder> GetAllContactsFolders(ExchangeService service)
{
// The collection will contain all contact folders.
Collection <Folder> folders = new Collection <Folder>();
// Get the root Contacts folder and load all properties. This results in a GetFolder call to EWS.
ContactsFolder rootContactFolder = ContactsFolder.Bind(service, WellKnownFolderName.Contacts);
folders.Add(rootContactFolder);
Console.WriteLine("Added the default Contacts folder to the collection of contact folders.");
// Find all child folders of the root Contacts folder.
int initialFolderSearchOffset = 0;
const int folderSearchPageSize = 100;
bool AreMoreFolders = true;
FolderView folderView = new FolderView(folderSearchPageSize, initialFolderSearchOffset);
folderView.Traversal = FolderTraversal.Deep;
folderView.PropertySet = new PropertySet(BasePropertySet.IdOnly);
while (AreMoreFolders)
{
try
{
// Find all the child folders of the default Contacts folder. This results in a FindFolder
// operation call to EWS.
FindFoldersResults childrenOfContactsFolderResults = rootContactFolder.FindFolders(folderView);
if (folderView.Offset == 0)
{
Console.WriteLine("Found {0} child folders of the default Contacts folder.", childrenOfContactsFolderResults.TotalCount);
}
foreach (Folder f in childrenOfContactsFolderResults.Folders)
{
ContactsFolder contactFolder = (ContactsFolder)f;
// Loads all the properties for the folder. This results in a GetFolder operation call to EWS.
contactFolder.Load();
Console.WriteLine("Loaded a folder named {0} and added it to the collection of contact folders.", contactFolder.DisplayName);
// Add the folder to the collection of contact folders.
folders.Add(contactFolder);
}
// Turn off paged searches if there are no more folders to return.
if (childrenOfContactsFolderResults.MoreAvailable == false)
{
AreMoreFolders = false;
}
else // Increment the paging offset.
{
folderView.Offset = folderView.Offset + folderSearchPageSize;
}
}
catch (Exception ex)
{
Console.WriteLine("Error: {0}", ex.Message);
}
}
return(folders);
}