Ejemplo n.º 1
0
        public static List <OPCServer> BrowseServers(string hostname, NetworkCredential networkCredential = null, bool DAVersion3 = false)
        {
            List <OPCServer> servers = new List <OPCServer>();

            Guid clsidcat;

            if (DAVersion3)
            {
                clsidcat = new Guid("{CC603642-66D7-48F1-B69A-B625E73652D7}"); //OPC Data Access Servers Version 3.
            }
            else
            {
                clsidcat = new Guid("{63D5F432-CFE4-11D1-B2C8-0060083BA1FB}"); //OPC Data Access Servers Version 2.
            }

            Guid clsidenum = new Guid("{13486D51-4821-11D2-A494-3CB306C10000}"); //OPCEnum.exe

            try
            {
                IOPCServerList2 serverList = (IOPCServerList2)Internal.Interop.CreateInstance(clsidenum, hostname, networkCredential);

                IOPCEnumGUID pIOPCEnumGuid;

                serverList.EnumClassesOfCategories(1, ref clsidcat, 0, ref clsidcat, out pIOPCEnumGuid);

                string pszProgID;
                string pszUserType;
                string pszVerIndProgID;
                Guid   guid       = new Guid();
                int    nServerCnt = 0;
                uint   iRetSvr;

                pIOPCEnumGuid.Next(1, out guid, out iRetSvr);
                while (iRetSvr != 0)
                {
                    nServerCnt++;
                    serverList.GetClassDetails(ref guid, out pszProgID,
                                               out pszUserType, out pszVerIndProgID);
                    OPCServer server = new OPCServer()
                    {
                        Guid     = guid,
                        ProgId   = pszProgID,
                        HostName = hostname,
                    };
                    servers.Add(server);
                    pIOPCEnumGuid.Next(1, out guid, out iRetSvr);
                }
                Internal.Interop.ReleaseServer(serverList);
            }
            catch (System.Exception ex)
            {
                Console.Out.WriteLine(ex.Message);
            }
            return(servers);
        }
Ejemplo n.º 2
0
        public static OPCServer FindServerByProgID(string progID, string hostname)
        {
            foreach (OPCServer srv in OPCServer.BrowseServers(hostname))
            {
                if (srv.ProgId.ToUpper().Contains(progID.ToUpper()))
                {
                    return(srv);
                }
            }

            return(null);
        }
Ejemplo n.º 3
0
        public void AdviseOnServer(OPCServer server, OPCItem item)
        {
            if (m_pItemMgt == null)
            {
                return;
            }
            try
            {
                IConnectionPointContainer pCPC;
                pCPC = (IConnectionPointContainer)m_pItemMgt;
                Guid riid = typeof(IOPCDataCallback).GUID;
                //IEnumConnectionPoints ppEnum;
                //pCPC.EnumConnectionPoints(out ppEnum);
                pCPC.FindConnectionPoint(ref riid, out m_pDataCallback);

                //Если ранее была активирована подписка, то отменить ее
                if (m_dwCookie != 0)
                {
                    m_pDataCallback.Unadvise(m_dwCookie);
                }

                DataCallback m_pSink = new DataCallback(item);
                m_pDataCallback.Advise(m_pSink, out m_dwCookie);
            }
            catch (COMException ex)
            {
                string msg;
                //Запрашиваем у сервера текст ошибки, соответствующий текущему HRESULT
                server.Server.GetErrorString(ex.HResult, 2, out msg);
                Console.Out.WriteLine(msg, "Ошибка");
            }
            catch (ServerException ex)
            {
                string msg;
                //Запрашиваем у сервера текст ошибки, соответствующий текущему HRESULT
                server.Server.GetErrorString(ex.HResult, 2, out msg);
                Console.Out.WriteLine(msg, "Ошибка");
            }
        }