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AliVireTechnologies1 #1
Member since Jun 2013 · 58 posts
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Subject: invite members to group at the time of group creation issue
  I am using these  following lines for adding a group and inviting members at the time of creation but it is giving an error, "PropertyNotSetException"

  1. MucManager mucManager = new MucManager(Utility.xmppClient);
  2. string roomId = txtgroupname.Text + "@conference." + Utility.Domain; //id is dynamic
  3. Jid m_RoomJid = new Jid(roomId);
  4.  
  5. mucManager.CreateEnterRoomStanza(roomId, "ali");
  6. mucManager.EnterRoom(m_RoomJid,Utility.xmppClient.Username, true);
  7. foreach (KeyValuePair<string, string> cg in Utility.contactgroup) //cg.key =PhoneNumber cg.value=Name of User
  8. {
  9.          Utility.mucManager.Invite(cg.Key + "@" + Utility.Domain, m_RoomJid , "want to chat");    //This line giving an error                          
  10. }

//         stack trace of Exception

 {Matrix.PropertyNotSetException: XmppClient
   at Matrix.Xmpp.Client.MucManager.#=q8PMBmJcZohgYyPHo$pbK5A==(XmppXElement #=qbW97V$uc7h2LAu51z2UTtg==)
   at Matrix.Xmpp.Client.MucManager.Invite(Jid[] jids, Jid room, String reason, String thread)
   at Matrix.Xmpp.Client.MucManager.Invite(Jid[] jids, Jid room, String reason)
   at Matrix.Xmpp.Client.MucManager.Invite(Jid to, Jid room, String reason)
   at VtalkkMessenger.AddGroup.ApplicationBarIconButton_Click_2(Object sender, EventArgs e)}
This post was edited on 2013-07-22, 09:19 by AliVireTechnologies1.
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Alex #2
Member since Feb 2003 · 4298 posts · Location: Germany
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The PropertyNotSetException raises when your XmppClient is null.
You can only execute functions in teh MucManager when you are connected to the XmppServer and you pass the correct XmppClient instance which is not null.

You can remove this line in your code because it does nothing:
  1. mucManager.CreateEnterRoomStanza(roomId, "ali");

Please download also Desktop version of MatriX. In the MiniClient example of the desktop version you can see how to use the MucManager.
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AliVireTechnologies1 #3
Member since Jun 2013 · 58 posts
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room is creating, and unlocking from on_presence event but on the receiving end em not receiving any group invitation

//=================create and invite function=================

 string roomId = "mygroup@conference.vtalk.viretechnologies.com";
                        Jid m_RoomJid = new Jid(roomId);
                        Utility.mucManager.EnterRoom(m_RoomJid, Utility.xmppClient.Username, true);
                        Utility.mucManager.Invite("92323@vtalk.viretechnologies.com", m_RoomJid , "want to chat");

                        }

//================Unlock group=================

   void xmppClient_OnPresence(object sender, PresenceEventArgs e)     // Getting online status and getting friendinvitation messsage.
        {

            var pres = e.Presence;

            if (pres.From.Equals(new Jid(e.Presence.From.User + "@conference." + Utility.Domain + "/" + e.Presence.To.User), fjc))
            {
                //self presence
                var xUser = pres.MucUser;
                if (xUser != null)
                {
                    if (xUser.HasStatus(110))
                    {

                    }

                    if (xUser.HasStatus(201))
                    {
                        // 201, Inform user that a new room has been created
                        Utility.mucManager.RequestInstantRoom(e.Presence.From, InstantRoomResult);
                    }
                }
            }
}
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