Exemple #1
0
        public bool LookupItemIDs(string itemID, int[] propertyIDs, out OPCPropertyItem[] propertyItems)
        {
            propertyItems = null;
            int count = propertyIDs.Length;

            if (count < 1)
            {
                return(false);
            }

            IntPtr ptrErr;
            IntPtr ptrIds;
            int    hresult = ifItmProps.LookupItemIDs(itemID, count, propertyIDs, out ptrIds, out ptrErr);

            if (HRESULTS.Failed(hresult))
            {
                Marshal.ThrowExceptionForHR(hresult);
            }

            int runIds = (int)ptrIds;
            int runErr = (int)ptrErr;

            if ((runIds == 0) || (runErr == 0))
            {
                Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT);
            }

            propertyItems = new OPCPropertyItem[count];

            IntPtr ptrString;

            for (int i = 0; i < count; i++)
            {
                propertyItems[i]            = new OPCPropertyItem();
                propertyItems[i].PropertyID = propertyIDs[i];

                propertyItems[i].Error = Marshal.ReadInt32((IntPtr)runErr);
                runErr += 4;

                if (propertyItems[i].Error == HRESULTS.S_OK)
                {
                    ptrString = (IntPtr)Marshal.ReadInt32((IntPtr)runIds);
                    propertyItems[i].newItemID = Marshal.PtrToStringUni(ptrString);
                    Marshal.FreeCoTaskMem(ptrString);
                }
                else
                {
                    propertyItems[i].newItemID = null;
                }

                runIds += 4;
            }

            Marshal.FreeCoTaskMem(ptrIds);
            Marshal.FreeCoTaskMem(ptrErr);
            return(hresult == HRESULTS.S_OK);
        }
        public bool LookupItemIDs( string itemID, int[] propertyIDs, out OPCPropertyItem[] propertyItems )
        {
            propertyItems = null;
            int	count = propertyIDs.Length;
            if( count < 1 )
            return false;

            IntPtr	ptrErr;
            IntPtr	ptrIds;
            int	hresult = ifItmProps.LookupItemIDs( itemID, count, propertyIDs, out ptrIds, out ptrErr );
            if( HRESULTS.Failed( hresult ) )
            Marshal.ThrowExceptionForHR( hresult );

            int	runIds = (int) ptrIds;
            int	runErr = (int) ptrErr;
            if( (runIds == 0) || (runErr == 0) )
            Marshal.ThrowExceptionForHR( HRESULTS.E_ABORT );

            propertyItems = new OPCPropertyItem[ count ];

            IntPtr ptrString;
            for( int i = 0; i < count; i++ )
            {
            propertyItems[i] = new OPCPropertyItem();
            propertyItems[i].PropertyID = propertyIDs[i];

            propertyItems[i].Error = Marshal.ReadInt32( (IntPtr) runErr );
            runErr += 4;

            if( propertyItems[i].Error == HRESULTS.S_OK )
                {
                ptrString = (IntPtr) Marshal.ReadInt32( (IntPtr) runIds );
                propertyItems[i].newItemID = Marshal.PtrToStringUni( ptrString );
                Marshal.FreeCoTaskMem( ptrString );
                }
            else
                propertyItems[i].newItemID = null;

            runIds += 4;
            }

            Marshal.FreeCoTaskMem( ptrIds );
            Marshal.FreeCoTaskMem( ptrErr );
            return hresult == HRESULTS.S_OK;
        }