ImapClient.GetFolder(MailKit.SpecialFolder.Archive) return nothing with Gmail

[ghost]

Please help. I can see "Archive" folder in Outlook. It has a thousands of messages. But I can't access with mailkit.

Dim client As ImapClient = New ImapClient
    With client
        .Connect("imap.gmail.com", 993, True)
        .Authenticate("xxxxxxx@gmail.com", "xxxxxxxxxxxxx")
        Dim folder As ImapFolder = .GetFolder(SpecialFolder.Archive)
        Dim query = SearchQuery.All
        folder.Open(FolderAccess.ReadOnly)  'NullReferenceException here
        Dim uids = all.Search(query)
        Text = uids.Count
        .Disconnect(True)
    End With

[jstedfast]

It's possible that GMail isn't marking the Archives folder with the \Archive flag. I'd have to see your protocol log to know for sure.

Here's what I get when connecting to my own GMail account:

C: A00000004 LIST (SPECIAL-USE) "" "*" RETURN (SUBSCRIBED CHILDREN)
S: * LIST (\All \HasNoChildren \Subscribed) "/" "[Gmail]/All Mail"
S: * LIST (\Drafts \HasNoChildren \Subscribed) "/" "[Gmail]/Drafts"
S: * LIST (\HasNoChildren \Sent \Subscribed) "/" "[Gmail]/Sent Mail"
S: * LIST (\HasNoChildren \Junk \Subscribed) "/" "[Gmail]/Spam"
S: * LIST (\Flagged \HasNoChildren \Subscribed) "/" "[Gmail]/Starred"
S: * LIST (\HasNoChildren \Subscribed \Trash) "/" "[Gmail]/Trash"
S: A00000004 OK Success

As you can see, there is no folder marked \Archive.

[ghost]

Thanks for the answer. I found this out too. So I created my own label called MyArchieve, and moved there all messages relevant to "-in:inbox -in:sent has:nouserlabels"