Want to enumerate Outlook folders

Question

I\'m looking for some code (C# or VB.NET preferred) to iterate through all folders in an Outlook mailbox and return the names of those folders. I\'m not looking to pop up t

Answer 1

I prefer a more LINQ friendly approach:

private IEnumerable GetAllFolders(Folders folders)
{
    foreach (MAPIFolder f in folders) {
        yield return f;
        foreach (var subfolder in GetAllFolders(f.Folders)) {
            yield return subfolder;
        }
    }
}

Then you can peruse the folders any way like. For example:

private IEnumerable GetAllEmail(NameSpace ns)
{
    foreach (var f in GetAllFolders(ns.Folders)) {
        if (f == DELETE_FOLDER) continue;
        if (f.DefaultItemType == OlItemType.olMailItem) {
            // Party!
        }
    }
}