Opc.Ua.Com.Server.ComAe2Subscription.SetFilter C# (CSharp) Method

        public void SetFilter(
            int eventTypes,
            ushort lowSeverity,
            ushort highSeverity,
            uint[] categoryIds,
            string[] areas,
            string[] sources)
        {
            ThrowIfDisposed();

            lock (m_lock)
            {
                // validate event types.
                if (eventTypes <= 0 || eventTypes > 0x7)
                {
                    throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
                }

                // validate severity.
                if (lowSeverity == 0 || highSeverity > 1000 || lowSeverity > highSeverity)
                {
                    throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
                }

                // validate categories.
                if (categoryIds != null)
                {
                    for (int ii = 0; ii < categoryIds.Length; ii++)
                    {
                        if (m_mapper.GetCategory(categoryIds[ii]) == null)
                        {
                            throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
                        }
                    }
                }

                // validate areas.
                List<NodeId> areasToUse = new List<NodeId>();

                if (areas != null)
                {
                    for (int ii = 0; ii < areas.Length; ii++)
                    {
                        List<NodeId> areaIds = m_browser.SearchByQualifiedName(areas[ii], true);

                        if (areaIds.Count == 0)
                        {
                            throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
                        }

                        areasToUse.AddRange(areaIds);
                    }
                }

                // validate sources.
                List<NodeId> sourcesToUse = new List<NodeId>();

                if (sources != null)
                {
                    for (int ii = 0; ii < sources.Length; ii++)
                    {
                        List<NodeId> sourceIds = m_browser.SearchByQualifiedName(sources[ii], false);

                        if (sourceIds.Count == 0)
                        {
                            throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
                        }

                        sourcesToUse.AddRange(sourceIds);
                    }
                }

                m_areas = areas;
                m_sources = sources;

                UpdateAreaFilter(areasToUse);
                UpdateSourceFilter(sourcesToUse);
                m_filter.SetFilter(eventTypes, lowSeverity, highSeverity, categoryIds, m_sourceNodes);
            }
        }