xmpp - How to know that when the user goes offline in AgsXMPP?

Question

I am currently trying with agsXMPP library , i added users to a treenode on OnPresence event. its works well, but when the other user goes offline i want to update the tree node, for that i need his Offline Presence ,How i get result when a chat buddy goes offline ?

Answer 1

当好友下线时，您会收到类型为不可用的 OnPresence 事件。

private void XmppCon_OnPresence(object sender, Presence pres)
{
    if (pres.Type == PresenceType.unavailable)
    {
        // user goes offline
    }
}