Opc.Ua.Com.Client.HdaSubscribeRequestManager.Add C# (CSharp) Method

        private HdaSubscribeAttributeRequest Add(NodeState source, MonitoredItem monitoredItem)
        {
            lock (m_lock)
            {
                m_monitoredItems.Add(monitoredItem.Id, monitoredItem);

                // get the HDA item id.
                string itemId = GetItemId(source);

                // create/update the subscribe request for the HDA item.
                if (itemId != null)
                {
                    HdaSubscribeAttributeRequest request = FindAttributeRequest(itemId, true);

                    if (request != null)
                    {
                        request.Add(m_context, monitoredItem);
                        return request;
                    }
                }

                return null;
            }
        }