VideoCallServer.User.SetIepVideo C# (CSharp) Method

        public void SetIepVideo(String sIP)
        {
            string[] stmp = sIP.Split(':');
            int iPort = Convert.ToInt32(stmp[1]);
            _iepVideo = new IPEndPoint(IPAddress.Parse(stmp[0]), iPort);
        }

 public void UpdateUserList(string sUsr, String sIP, string sPortVideo, string sPortAudio, bool bAdd, Socket sck)
 {
     try
     {
         if (!lstUsers.InvokeRequired)
         {
             // remove if exist
             int i;
             for (i = 0; i < _listUsr.Count; i++)
             {
                 User tmp = (User)_listUsr[i];
                 if (tmp.GetUser() == sUsr)
                 {
                     _listUsr.Remove(tmp);
                     lstUsers.Items.Remove(sUsr);
                 }
             }
             if (bAdd)
             {
                 User usr = new User(sUsr, sIP, sck);
                 usr.SetIepAudio(Convert.ToInt32(sPortAudio));
                 usr.SetIepVideo(Convert.ToInt32(sPortVideo));
                 _listUsr.Add(usr);
                 lstUsers.Items.Add(sUsr);
             }
         }
         else
         {
             UpdateUserListCallback d = new UpdateUserListCallback(UpdateUserList);
             Invoke(d, new object[] { sUsr, sIP, sPortVideo, sPortAudio, bAdd, sck });
         }
     }
     catch (Exception)
     {
     }
 }