public bool GetItemProperties(string itemID, int[] propertyIDs, out OPCPropertyData[] propertiesData)
{
propertiesData = null;
int count = propertyIDs.Length;
if (count < 1)
{
return(false);
}
IntPtr ptrDat;
IntPtr ptrErr;
int hresult = ifItmProps.GetItemProperties(itemID, count, propertyIDs, out ptrDat, out ptrErr);
if (HRESULTS.Failed(hresult))
{
Marshal.ThrowExceptionForHR(hresult);
}
int runDat = (int)ptrDat;
int runErr = (int)ptrErr;
if ((runDat == 0) || (runErr == 0))
{
Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT);
}
propertiesData = new OPCPropertyData[count];
for (int i = 0; i < count; i++)
{
propertiesData[i] = new OPCPropertyData();
propertiesData[i].PropertyID = propertyIDs[i];
propertiesData[i].Error = Marshal.ReadInt32((IntPtr)runErr);
runErr += 4;
if (propertiesData[i].Error == HRESULTS.S_OK)
{
propertiesData[i].Data = Marshal.GetObjectForNativeVariant((IntPtr)runDat);
DUMMY_VARIANT.VariantClear((IntPtr)runDat);
}
else
{
propertiesData[i].Data = null;
}
runDat += DUMMY_VARIANT.ConstSize;
}
Marshal.FreeCoTaskMem(ptrDat);
Marshal.FreeCoTaskMem(ptrErr);
return(hresult == HRESULTS.S_OK);
}
public bool GetItemProperties( string itemID, int[] propertyIDs, out OPCPropertyData[] propertiesData )
{
propertiesData = null;
int count = propertyIDs.Length;
if( count < 1 )
return false;
IntPtr ptrDat;
IntPtr ptrErr;
int hresult = ifItmProps.GetItemProperties( itemID, count, propertyIDs, out ptrDat, out ptrErr );
if( HRESULTS.Failed( hresult ) )
Marshal.ThrowExceptionForHR( hresult );
int runDat = (int) ptrDat;
int runErr = (int) ptrErr;
if( (runDat == 0) || (runErr == 0) )
Marshal.ThrowExceptionForHR( HRESULTS.E_ABORT );
propertiesData = new OPCPropertyData[ count ];
for( int i = 0; i < count; i++ )
{
propertiesData[i] = new OPCPropertyData();
propertiesData[i].PropertyID = propertyIDs[i];
propertiesData[i].Error = Marshal.ReadInt32( (IntPtr) runErr );
runErr += 4;
if( propertiesData[i].Error == HRESULTS.S_OK )
{
propertiesData[i].Data = Marshal.GetObjectForNativeVariant( (IntPtr) runDat );
DUMMY_VARIANT.VariantClear( (IntPtr) runDat );
}
else
propertiesData[i].Data = null;
runDat += DUMMY_VARIANT.ConstSize;
}
Marshal.FreeCoTaskMem( ptrDat );
Marshal.FreeCoTaskMem( ptrErr );
return hresult == HRESULTS.S_OK;
}