public bool AddItems(OPCItemDef[] arrDef, out OPCItemResult[] arrRes) { arrRes = null; bool hasblobs = false; int count = arrDef.Length; IntPtr ptrDef = Marshal.AllocCoTaskMem(count * sizeOPCITEMDEF); int runDef = (int)ptrDef; OPCITEMDEFintern idf = new OPCITEMDEFintern(); idf.wReserved = 0; foreach (OPCItemDef d in arrDef) { idf.szAccessPath = d.AccessPath; idf.szItemID = d.ItemID; idf.bActive = d.Active; idf.hClient = d.HandleClient; idf.vtRequestedDataType = (short)d.RequestedDataType; idf.dwBlobSize = 0; idf.pBlob = IntPtr.Zero; if (d.Blob != null) { idf.dwBlobSize = d.Blob.Length; if (idf.dwBlobSize > 0) { hasblobs = true; idf.pBlob = Marshal.AllocCoTaskMem(idf.dwBlobSize); Marshal.Copy(d.Blob, 0, idf.pBlob, idf.dwBlobSize); } } Marshal.StructureToPtr(idf, (IntPtr)runDef, false); runDef += sizeOPCITEMDEF; } IntPtr ptrRes; IntPtr ptrErr; int hresult = ifItems.AddItems(count, ptrDef, out ptrRes, out ptrErr); runDef = (int)ptrDef; if (hasblobs) { for (int i = 0; i < count; i++) { IntPtr blob = (IntPtr)Marshal.ReadInt32((IntPtr)(runDef + 20)); if (blob != IntPtr.Zero) { Marshal.FreeCoTaskMem(blob); } Marshal.DestroyStructure((IntPtr)runDef, typeOPCITEMDEF); runDef += sizeOPCITEMDEF; } } else { for (int i = 0; i < count; i++) { Marshal.DestroyStructure((IntPtr)runDef, typeOPCITEMDEF); runDef += sizeOPCITEMDEF; } } Marshal.FreeCoTaskMem(ptrDef); if (HRESULTS.Failed(hresult)) { Marshal.ThrowExceptionForHR(hresult); } int runRes = (int)ptrRes; int runErr = (int)ptrErr; if ((runRes == 0) || (runErr == 0)) { Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT); } arrRes = new OPCItemResult[count]; for (int i = 0; i < count; i++) { arrRes[i] = new OPCItemResult(); arrRes[i].Error = Marshal.ReadInt32((IntPtr)runErr); if (HRESULTS.Failed(arrRes[i].Error)) { continue; } arrRes[i].HandleServer = Marshal.ReadInt32((IntPtr)runRes); arrRes[i].CanonicalDataType = (VarEnum)(int)Marshal.ReadInt16((IntPtr)(runRes + 4)); arrRes[i].AccessRights = (OPCACCESSRIGHTS)Marshal.ReadInt32((IntPtr)(runRes + 8)); int ptrblob = Marshal.ReadInt32((IntPtr)(runRes + 16)); if ((ptrblob != 0)) { int blobsize = Marshal.ReadInt32((IntPtr)(runRes + 12)); if (blobsize > 0) { arrRes[i].Blob = new byte[blobsize]; Marshal.Copy((IntPtr)ptrblob, arrRes[i].Blob, 0, blobsize); } Marshal.FreeCoTaskMem((IntPtr)ptrblob); } runRes += sizeOPCITEMRESULT; runErr += 4; } Marshal.FreeCoTaskMem(ptrRes); Marshal.FreeCoTaskMem(ptrErr); return(hresult == HRESULTS.S_OK); }
public void Connect() { int i; try { #if CREDENTIALS LogMessage("Test if CNC Exe IsExecuting()", 1); if ((sCNCProcessName.Length > 0) && !IsExecuting(sOPCMachine, sCNCProcessName)) { throw new Exception("Cannot start OPC Server" + sCNCProcessName + " not running"); } LogMessage("Connect to CNC", 1); // This is used as credentials to logon ont remote pc to see if CNC running System.Net.NetworkCredential credential; if (sDomain.Length > 0) { credential = new System.Net.NetworkCredential(sUser, sPassword, sDomain); } else { credential = new System.Net.NetworkCredential(sUser, sPassword); // , sDomain); } #endif _opcserver = new OpcServer(); LogMessage("Attempt OPC Server Connection", Logger.DEBUG); // _opcserver will be null if failed... _opcserver.Connect(this.clsid, this.sIpAddress); LogMessage("Create OPC Group", Logger.DEBUG); opcgroup = _opcserver.AddGroup("OPCCSharp-Group", false, 900); if (opcgroup == null) { throw new Exception("Connect - AddGroup failed"); } // FIXME: this only works if OPC item exists. // Add items to OPC Group LogMessage("Add OPC Items", Logger.DEBUG); OPCItemResult[] itemresult; opcgroup.AddItems(tags, out itemresult); if (itemresult == null) { throw new Exception("Connect - OPC AddItems failed"); } LogMessage("Check OPC items for errors.", Logger.DEBUG); for (i = 0; i < itemresult.Length; i++) { // If the OPC item failed - remove it from the tags to be updated. if (HRESULTS.Failed(itemresult[i].Error)) { LogMessage("OPC AddItems Error: " + tags[i].ItemID, Logger.DEBUG); itemresult = (OPCItemResult[])RemoveAt(itemresult, i); tags = (OPCItemDef[])RemoveAt(tags, i); handlesSrv = (int[])RemoveAt(handlesSrv, i); continue; } handlesSrv[i] = itemresult[i].HandleServer; } // read group LogMessage("OPC ReadStatus", Logger.DEBUG); ReadStatus(); LogMessage("OPC ReadGroup", Logger.DEBUG); ReadGroup(); } catch (Exception e) { LogMessage("OPC Connect Error: " + e.Message, Logger.ERROR); Disconnect(); } }