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

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

            string methodName = "IOPCBrowseServerAddressSpace.BrowseOPCItemIDs";

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

                OPCBROWSETYPE browseType = OPCBROWSETYPE.OPC_BRANCH;

                if (!branches)
                {
                    browseType = OPCBROWSETYPE.OPC_LEAF;
                }

                server.BrowseOPCItemIDs(browseType, String.Empty, 0, 0, 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);
        }