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;
}