Opc.Ua.Com.Server.ComDaGroup.SetCallback C# (CSharp) Method

        public void SetCallback(IComDaGroupCallback callback)
        {
            TraceState("SetCallback", callback != null);
            ThrowIfDisposed();

            lock (m_lock)
            {
                bool areUpdatesRequired = AreUpdatesRequired;

                if (m_callback != null)
                {
                    m_callback.Dispose();
                    m_callback = null;
                }

                m_callback = callback;

                // resend the contents of the cache.
                if (!areUpdatesRequired && AreUpdatesRequired)
                {
                    int cancelId = 0;
                    Refresh(0, 0, true, out cancelId);
                }

                CheckUpdateTimerStatus();
            }
        }