Can I get a userid from the message

I am writing a message parser from a chat for a specific user, I use TLSharp , the question is, can I find out to which user a particular message belongs?

 TLInputPeerChannel inputPeer = new TLInputPeerChannel() { ChannelId = channel.Id, AccessHash = (long)channel.AccessHash }; while (true) { TLChannelMessages res = await client.SendRequestAsync<TLChannelMessages> (new TLRequestGetHistory() { Peer = inputPeer, Limit = 400, AddOffset = offset, OffsetId = 0, }); var msgs = res.Messages;