public frmTimDiemSV(Login acc)
{
InitializeComponent();
cboKhoa.DisplayMember = "MaKhoa";
cboKhoa.ValueMember = "MaKhoa";
cboKhoa.DataSource = ListKhoa.getAllKhoa();
cboKhoa.SelectedIndex = 0;
cboMonHoc.DisplayMember = "MaMon";
cboMonHoc.ValueMember = "MaMon";
cboMonHoc.DataSource = ListMon.getAllMon();
cboMonHoc.SelectedIndex = 0;
loadData();
}
public frmQLDiem(Login acc)
{
InitializeComponent();
cboLop.DisplayMember = "MaLop";
cboLop.ValueMember = "MaLop";
cboLop.DataSource = ListLop.getAllLop();
cboLop.SelectedIndex = 0;
cboKhoaHoc.DisplayMember = "TenKhoa";
cboKhoaHoc.ValueMember = "MaKhoa";
cboKhoaHoc.DataSource = ListKhoa.getAllKhoa();
cboKhoaHoc.SelectedIndex = 0;
cboMonHoc.DisplayMember = "MaMon";
cboMonHoc.ValueMember = "MaMon";
cboMonHoc.DataSource = ListMon.getAllMon();
cboMonHoc.SelectedIndex = 0;
loadData();
}
private async Task FindObjects(Opc.Ua.Client.Session session, NodeId nodeid)
{
if (session == null)
{
return;
}
try
{
ReferenceDescriptionCollection references;
Byte[] continuationPoint;
if (NodeIdsFromObjects.Contains(nodeid.ToString()))
{
return;
}
session.Browse(
null,
null,
nodeid,
0u,
BrowseDirection.Forward,
ReferenceTypeIds.HierarchicalReferences,
true,
(uint)NodeClass.Variable | (uint)NodeClass.Object,
out continuationPoint,
out references);
foreach (var rd in references)
{
Log(conn_name + " - " + rd.NodeId + ", " + rd.DisplayName + ", " + rd.BrowseName + ", " + rd.NodeClass);
if (rd.NodeClass == NodeClass.Variable && !NodeIds.Contains(rd.NodeId.ToString()))
{
NodeIds.Add(rd.NodeId.ToString());
ListMon.Add(
new MonitoredItem()
{
DisplayName = rd.DisplayName.ToString(),
StartNodeId = rd.NodeId.ToString(),
SamplingInterval = System.Convert.ToInt32(System.Convert.ToDouble(OPCUA_conn.autoCreateTagSamplingInterval) * 1000),
QueueSize = System.Convert.ToUInt32(OPCUA_conn.autoCreateTagQueueSize),
MonitoringMode = MonitoringMode.Reporting,
DiscardOldest = true,
AttributeId = Attributes.Value
});
}
else
if (rd.NodeClass == NodeClass.Object)
{
NodeIdsFromObjects.Add(nodeid.ToString());
await FindObjects(session, ExpandedNodeId.ToNodeId(rd.NodeId, session.NamespaceUris));
Thread.Yield();
//Thread.Sleep(1);
//await Task.Delay(1);
}
}
}
catch (Exception ex)
{
Log(conn_name + " - " + ex.Message);
}
}
private async Task ConsoleClient()
{
Log(conn_name + " - " + "Create an Application Configuration...");
exitCode = ExitCode.ErrorCreateApplication;
ApplicationInstance application = new ApplicationInstance
{
ApplicationName = "JSON-SCADA OPC-UA Client",
ApplicationType = ApplicationType.Client,
ConfigSectionName = "",
};
bool haveAppCertificate = false;
ApplicationConfiguration config = null;
try
{
// load the application configuration.
Log(conn_name + " - " + "Load config from " + OPCUA_conn.configFileName);
config = await application.LoadApplicationConfiguration(OPCUA_conn.configFileName, false);
// config.SecurityConfiguration.AutoAcceptUntrustedCertificates = true;
// check the application certificate.
haveAppCertificate = await application.CheckApplicationInstanceCertificate(false, 0);
if (!haveAppCertificate)
{
Log(conn_name + " - " + "FATAL: Application instance certificate invalid!", LogLevelNoLog);
Environment.Exit(1);
}
if (haveAppCertificate)
{
config.ApplicationUri = X509Utils.GetApplicationUriFromCertificate(config.SecurityConfiguration.ApplicationCertificate.Certificate);
if (config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
{
autoAccept = true;
}
config.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);
}
else
{
Log(conn_name + " - " + "WARN: missing application certificate, using unsecure connection.");
}
}
catch (Exception e)
{
Log(conn_name + " - WARN: " + e.Message);
}
if (config == null)
{
Log(conn_name + " - " + "FATAL: error in XML config file!", LogLevelNoLog);
Environment.Exit(1);
}
try
{
Log(conn_name + " - " + "Discover endpoints of " + OPCUA_conn.endpointURLs[0]);
exitCode = ExitCode.ErrorDiscoverEndpoints;
var selectedEndpoint = CoreClientUtils.SelectEndpoint(OPCUA_conn.endpointURLs[0], haveAppCertificate && OPCUA_conn.useSecurity, 15000);
Log(conn_name + " - " + "Selected endpoint uses: " +
selectedEndpoint.SecurityPolicyUri.Substring(selectedEndpoint.SecurityPolicyUri.LastIndexOf('#') + 1));
Log(conn_name + " - " + "Create a session with OPC UA server.");
exitCode = ExitCode.ErrorCreateSession;
var endpointConfiguration = EndpointConfiguration.Create(config);
var endpoint = new ConfiguredEndpoint(null, selectedEndpoint, endpointConfiguration);
await Task.Delay(50);
session = await Session.Create(config, endpoint, false, "OPC UA Console Client", 60000, new UserIdentity(new AnonymousIdentityToken()), null);
// Log("" + session.KeepAliveInterval); // default is 5000
session.KeepAliveInterval = System.Convert.ToInt32(OPCUA_conn.timeoutMs);
// register keep alive handler
session.KeepAlive += Client_KeepAlive;
}
catch (Exception e)
{
Log(conn_name + " - WARN: " + e.Message);
}
if (session == null)
{
Log(conn_name + " - " + "FATAL: error creating session!", LogLevelNoLog);
Environment.Exit(1);
}
Log(conn_name + " - " + "Browsing the OPC UA server namespace.");
exitCode = ExitCode.ErrorBrowseNamespace;
await FindObjects(session, ObjectIds.ObjectsFolder);
await Task.Delay(50);
Log(conn_name + " - " + "Add a list of items (server current time and status) to the subscription.");
exitCode = ExitCode.ErrorMonitoredItem;
ListMon.ForEach(i => i.Notification += OnNotification);
//ListMon.ForEach(i => i.SamplingInterval = System.Convert.ToInt32(System.Convert.ToDouble(OPCUA_conn.autoCreateTagSamplingInterval) * 1000);
// ListMon.ForEach(i => Log(conn_name + " - " + i.DisplayName));
Log(conn_name + " - " + ListMon.Count + " Objects found");
Log(conn_name + " - " + "Create a subscription with publishing interval of " + System.Convert.ToDouble(OPCUA_conn.autoCreateTagPublishingInterval) + "seconds");
exitCode = ExitCode.ErrorCreateSubscription;
var subscription =
new Subscription(session.DefaultSubscription)
{
PublishingInterval = System.Convert.ToInt32(System.Convert.ToDouble(OPCUA_conn.autoCreateTagPublishingInterval) * 1000),
PublishingEnabled = true
};
await Task.Delay(50);
subscription.AddItems(ListMon);
await Task.Delay(50);
Log(conn_name + " - " + "Add the subscription to the session.");
Log(conn_name + " - " + subscription.MonitoredItemCount + " Monitored items");
exitCode = ExitCode.ErrorAddSubscription;
session.AddSubscription(subscription);
subscription.Create();
subscription.ApplyChanges();
Log(conn_name + " - " + "Running...");
exitCode = ExitCode.ErrorRunning;
}
private void loadData()
{
dgrMON.DataSource = ListMon.getAllMon();
}
