/// <summary>
/// Called to disconnect from a server.
/// </summary>
public void OnDisconnect()
{
try
{
// close notification callbacks.
EventListCTRL.RemoveSubscriptions();
// disconnect server.
if (m_server != null)
{
try { m_server.Disconnect(); }
catch {}
m_server.Dispose();
m_server = null;
}
// uninitialize controls.
StatusCTRL.Start(null);
SubscriptionsCTRL.ShowSubscriptions(null);
OutputCTRL.Text = "";
}
catch (Exception e)
{
MessageBox.Show(e.Message, "Disconnect Server Failed");
}
}
/// <summary>
/// Called to disconnect from a server.
/// </summary>
public void OnDisconnect()
{
try
{
// close notification callbacks.
eventListCtrl_.RemoveSubscriptions();
// disconnect server.
if (server_ != null)
{
try { server_.Disconnect(); }
catch { }
server_.Dispose();
server_ = null;
}
// uninitialize controls.
statusCtrl_.Start(null);
subscriptionsCtrl_.ShowSubscriptions(null);
outputCtrl_.Text = "";
}
catch (Exception e)
{
MessageBox.Show(e.Message, "Disconnect Server Failed");
}
}
public void Run()
{
try
{
const string serverUrl = "opcae://localhost/Technosoftware.AeSample";
Console.WriteLine();
Console.WriteLine("Simple OPC AE Client based on the OPC AE Client SDK .NET Standard");
Console.WriteLine("-----------------------------------------------------------------");
Console.Write(" Press <Enter> to connect to "); Console.WriteLine(serverUrl);
Console.ReadLine();
Console.WriteLine(" Please wait...");
TsCAeServer myAeServer = new TsCAeServer();
// Connect to the server
myAeServer.Connect(serverUrl);
Console.WriteLine(" Connected, press <Enter> to create an active subscription and press <Enter>");
Console.WriteLine(" again to deactivate the subscription. This stops the reception of new events.");
Console.ReadLine();
TsCAeSubscriptionState state = new TsCAeSubscriptionState {
Active = true, BufferTime = 0, MaxSize = 0, ClientHandle = 100, Name = "Simple Event Subscription"
};
TsCAeCategory[] categories = myAeServer.QueryEventCategories((int)TsCAeEventType.Condition);
TsCAeAttribute[] attributes = null;
attributes = myAeServer.QueryEventAttributes(categories[0].ID);
int[] attributeIDs = new int[2];
attributeIDs[0] = attributes[0].ID;
attributeIDs[1] = attributes[1].ID;
TsCAeSubscription subscription;
subscription = (TsCAeSubscription)myAeServer.CreateSubscription(state);
subscription.DataChangedEvent += OnDataChangedEvent;
subscription.SelectReturnedAttributes(categories[0].ID, attributeIDs);
Console.ReadLine();
subscription.DataChangedEvent -= OnDataChangedEvent;
Console.WriteLine(" Subscription deactivated, press <Enter> to remove the subscription and disconnect from the server.");
subscription.Dispose(); // Remove subscription
myAeServer.Disconnect(); // Disconnect from server
myAeServer.Dispose(); // Dispose server object
Console.ReadLine();
Console.WriteLine(" Disconnected from the server.");
Console.WriteLine();
}
catch (OpcResultException e)
{
Console.WriteLine(String.Format(" {0}", e.Message));
Console.ReadLine();
return;
}
catch (Exception e)
{
Console.WriteLine(String.Format(" {0}", e.Message));
Console.ReadLine();
return;
}
}