Opc.Ua.Server.SamplingGroup.StartMonitoring C# (CSharp) Method

        public bool StartMonitoring(OperationContext context, ISampledDataChangeMonitoredItem monitoredItem)
        {
            lock (m_lock)
            {
                if (MeetsGroupCriteria(context, monitoredItem))
                {
                    m_itemsToAdd.Add(monitoredItem);
                    monitoredItem.SetSamplingInterval(m_samplingInterval);
                    return true;
                }

                return false;
            }
        }
        

        /// <summary>
        /// Starts monitoring the item.
        /// </summary>
        /// <remarks>
        /// It will use the external source for monitoring if the source accepts the item.
        /// The changes will not take affect until the ApplyChanges() method is called.
        /// </remarks>
        public virtual void StartMonitoring(OperationContext context, ISampledDataChangeMonitoredItem monitoredItem)
        {
            lock (m_lock)
            {
                // do nothing for disabled or exception based items.
                if (monitoredItem.MonitoringMode == MonitoringMode.Disabled || monitoredItem.MinimumSamplingInterval == 0)
                {
                    m_sampledItems.Add(monitoredItem, null);
                    return;
                }

                // find a suitable sampling group.
                foreach (SamplingGroup samplingGroup in m_samplingGroups)
                {
                    if (samplingGroup.StartMonitoring(context, monitoredItem))
                    {
                        m_sampledItems.Add(monitoredItem, samplingGroup);
                        return;
                    }
                }

                // create a new sampling group.
                SamplingGroup samplingGroup2 = new SamplingGroup(
                    m_server,
                    m_nodeManager,
                    m_samplingRates,
                    context,
                    monitoredItem.SamplingInterval);

                samplingGroup2.StartMonitoring(context, monitoredItem);

                m_samplingGroups.Add(samplingGroup2);
                m_sampledItems.Add(monitoredItem, samplingGroup2);
            }
        }