private void ReleaseCom()
{
if (_asyncRequestManager != null)
{
_asyncRequestManager.Dispose();
_asyncRequestManager = null;
}
try
{
if (ComObject != null)
{
ComObject.ReleaseComServer();
ComObject = null;
}
}
catch (Exception ex)
{
Log.ErrorFormat("Failed to release COM object of '{0}' group.", ex, Name);
}
try
{
OnDestroyed();
}
catch (Exception ex)
{
Log.ErrorFormat("Destroy event of group '{0}' throws exception .", ex, Name);
}
}
internal OpcDaGroup(object groupComObject, OpcDaServer opcDaServer)
{
ComObject = groupComObject;
Server = opcDaServer;
SyncState();
_asyncRequestManager = new AsyncRequestManager(this);
_asyncRequestManager.NewItemValues += values => OnValuesChanged(new OpcDaItemValuesChangedEventArgs(values));
}
