How to get all Archived Threads in given channel?

[blockchain0026]

I've did a lot of searching on the internet for querying archived threads using discord.net but found not thing, I know there is SocketTextChannel.Threads which returns a ReadOnlyCollection of threads, but it only returns what have cached, not all the threads.

[Sauceke]

Had this exact issue recently, this is how I solved it.
If you only want the archived threads, start with an empty list instead of channel.GetActiveThreadsAsync().