Opc.Ua.Com.Client.ComAeBrowserClient.CreateEnumerator C# (CSharp) Method

        private EnumString CreateEnumerator(bool sources)
        {
            IEnumString unknown = null;

            string methodName = "IOPCEventAreaBrowser.BrowseOPCAreas";

            try
            {
                IOPCEventAreaBrowser server = BeginComCall<IOPCEventAreaBrowser>(methodName, true);

                OPCAEBROWSETYPE browseType = OPCAEBROWSETYPE.OPC_AREA;

                if (sources)
                {
                    browseType = OPCAEBROWSETYPE.OPC_SOURCE;
                }

                server.BrowseOPCAreas(browseType, String.Empty, out unknown);
            }
            catch (Exception e)
            {
                ComCallError(methodName, e);
                return null;
            }
            finally
            {
                EndComCall(methodName);
            }

            // wrapper the enumrator. hardcoding a buffer size of 256.
            return new EnumString(unknown, 256);
        }
        #endregion