public void Terminate()
{
// disconnect all the connected objects
if (m_aeSubscription != null && m_aeSubscription.CurrentState != EnumObjectState.DISCONNECTED)
{
m_aeSubscription.Disconnect(new ExecutionOptions());
}
if (m_aeSession != null && m_aeSession.CurrentState != EnumObjectState.DISCONNECTED)
{
m_aeSession.Disconnect(new ExecutionOptions());
// remove subscription from session
if (m_aeSession != null)
{
m_aeSession.RemoveAeSubscription(m_aeSubscription);
}
}
// remove session from application
GetApplication().RemoveAeSession(m_aeSession);
// terminate the application
GetApplication().Terminate();
m_aeSession = null;
m_aeSubscription = null;
m_executionOptions = null;
}
//-----------------
public MyAeSubscription(MyAeSession parentSession) : base(parentSession)
{
PerformStateTransitionCompleted += new PerformStateTransitionEventHandler(HandlePerformObjectStateTransitionCompleted);
StateChangeCompleted += new StateChangeEventHandler(HandleStateChangeCompleted);
AeEventsReceived += new AeEventsReceivedEventHandler(HandleEventsReceived);
AeConditionsChanged += new AeConditionsChangedEventHandler(HandleConditionsChanged);
}
public int InitializeAeObjects(string url)
{
int connectResult = (int)EnumResultCode.E_FAIL;
m_executionOptions = new ExecutionOptions();
m_executionOptions.ExecutionType = EnumExecutionType.ASYNCHRONOUS;
m_executionOptions.ExecutionContext = 0;
try
{
m_aeSession = new MyAeSession(url);
m_aeSubscription = new MyAeSubscription(m_aeSession);
connectResult = m_aeSession.Connect(true, false, new ExecutionOptions());
uint[] categoryIds = new uint[]
{
(uint)CategoriesAndAttribute.Categories.System_alarm,
(uint)CategoriesAndAttribute.Categories.Process_alarm,
(uint)CategoriesAndAttribute.Categories.Operation_record
};
m_aeSubscription.FilterCategories = categoryIds;
AeReturnedAttributes[] returnedAttributes = new AeReturnedAttributes[categoryIds.Length];
for (int i = 0; i < categoryIds.Length; i++)
{
List <uint> temp = CategoriesAndAttribute.getAttributeIDsFromCategoryID(categoryIds[i]);
uint[] attributeIds = new uint[temp.Count];
attributeIds = temp.ToArray();
returnedAttributes[i] = new AeReturnedAttributes();
returnedAttributes[i].AttributeIds = attributeIds;
returnedAttributes[i].CategoryId = categoryIds[i];
}
m_aeSubscription.ReturnedAttributes = returnedAttributes;
}
catch (Exception exc)
{
GetApplication().Trace(
EnumTraceLevel.ERR,
EnumTraceGroup.USER,
"OpcClient::InitializeAeObjects",
exc.ToString());
} // end try...catch
return(connectResult);
} // end InitializeAeObjects