// Get all nodes excluding Server Node in the references Collection
private void GetTanks()
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = Opc.Ua.ObjectIds.ObjectsFolder;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.All);
ReferenceDescriptionCollection references = ClientUtils.Browse(
m_session,
nodeToBrowse,
false);
if (references != null)
{
for (int ii = 0; ii < references.Count; ii++)
{
// do not add Server node
if (!references[ii].BrowseName.Name.Equals("Server"))
{
tanksRef.Add(references[ii]);
}
}
}
}
/// <summary>
/// Updates the application after connecting to or disconnecting from the server.
/// </summary>
private void Server_ConnectComplete(object sender, EventArgs e)
{
try
{
m_session = ConnectServerCTRL.Session;
// set a suitable initial state.
if (m_session != null && !m_connectedOnce)
{
m_connectedOnce = true;
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = Opc.Ua.ObjectIds.ViewsFolder;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, nodeToBrowse, false);
ViewCB.Items.Clear();
ViewCB.Items.Add(new ReferenceDescription()
{
NodeId = ExpandedNodeId.Null, DisplayName = "None"
});
if (references != null)
{
for (int ii = 0; ii < references.Count; ii++)
{
ViewCB.Items.Add(references[ii]);
}
}
ViewCB.SelectedIndex = 0;
}
// browse the instances in the server.
BrowseCTRL.Initialize(m_session, ObjectIds.ObjectsFolder, ReferenceTypeIds.Organizes, ReferenceTypeIds.Aggregates);
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
private void GetTanks()
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = Opc.Ua.ObjectIds.ObjectsFolder;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.All);
ReferenceDescriptionCollection references = ClientUtils.Browse(
m_session,
nodeToBrowse,
false);
ReferenceDescription tank = null;
if (references != null)
{
for (int ii = 1; ii < references.Count; ii++)
{
//tanks.Add(references[ii]);
tank = references[ii];
}
}
NamespaceTable wellKnownNamespaceUris = new NamespaceTable();
string[] browsePaths = new string[]
{
"1:Level",
"2:Temperature"
};
List <NodeId> nodes = ClientUtils.TranslateBrowsePaths(
m_session,
(NodeId)tank.NodeId,
wellKnownNamespaceUris,
browsePaths);
}
/// <summary>
/// Gets the boilers.
/// </summary>
private void GetBoilers()
{
BoilerCB.Items.Clear();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = Opc.Ua.ObjectIds.ObjectsFolder;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.All);
ReferenceDescriptionCollection references = ClientUtils.Browse(
m_session,
nodeToBrowse,
false);
if (references != null)
{
NodeId boilerTypeId = ExpandedNodeId.ToNodeId(ObjectTypeIds.BoilerType, m_session.NamespaceUris);
for (int ii = 0; ii < references.Count; ii++)
{
if (boilerTypeId == references[ii].TypeDefinition)
{
BoilerCB.Items.Add(references[ii]);
}
}
if (BoilerCB.Items.Count > 0)
{
BoilerCB.SelectedIndex = 0;
}
}
}
private void subscribeToolStripMenuItem_Click(object sender, EventArgs e)
{
if ((NodeId)BrowseCTRL.SelectedNode.NodeId != null)
{
if (subscriptionOutputWindow == null)
{
subscriptionOutputWindow = new SubscriptionOutput();
}
if (m_subscription == null)
{
m_subscription = new Subscription(m_session.DefaultSubscription);
m_subscription.PublishingEnabled = true;
m_subscription.PublishingInterval = 1000;
m_session.AddSubscription(m_subscription);
m_subscription.Create();
}
if (monitoredItems.Count == 0)
{
if (BrowseCTRL.GetChildOfSelectedNode(0) != null)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = (NodeId)BrowseCTRL.SelectedNode.NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
//nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.All);
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, nodeToBrowse, false);
subscriptionOutputWindow.label1.Text = "You selected a folder: these are the child nodes:\n";
foreach (var item in references)
{
var mi = new MonitoredItem(m_subscription.DefaultItem);
mi.StartNodeId = (NodeId)item.NodeId;
mi.AttributeId = Attributes.DisplayName;
mi.MonitoringMode = MonitoringMode.Reporting;
mi.SamplingInterval = 1000;
mi.QueueSize = 0;
mi.DiscardOldest = true;
mi.Notification += new MonitoredItemNotificationEventHandler(Mi_Notification);
monitoredItems.Add(mi);
}
}
else
{
var mi = new MonitoredItem(m_subscription.DefaultItem);
mi.StartNodeId = (NodeId)BrowseCTRL.SelectedNode.NodeId;
mi.AttributeId = Attributes.Value;
mi.MonitoringMode = MonitoringMode.Reporting;
mi.SamplingInterval = 1000;
mi.QueueSize = 0;
mi.DiscardOldest = true;
mi.Notification += new MonitoredItemNotificationEventHandler(Mi_Notification);
// define event handler for this item, and then add to subscription
mi.Notification += new MonitoredItemNotificationEventHandler(monitoredItem_Notification);
monitoredItems.Add(mi);
}
m_subscription.AddItems(monitoredItems);
}
subscriptionOutputWindow.Show();
subscriptionOutputWindow.FormClosed += OutputWindow_FormClosed;
m_subscription.ApplyChanges();
}
}
/// <summary>
/// Updates the application after connecting to or disconnecting from the server.
/// </summary>
private void Server_ConnectComplete(object sender, EventArgs e)
{
try
{
m_session = ConnectServerCTRL.Session;
if (m_session == null)
{
return;
}
// set a suitable initial state.
if (m_session != null && !m_connectedOnce)
{
m_connectedOnce = true;
EventsLV.IsSubscribed = false;
EventsLV.DisplayConditions = true;
EventsLV.ChangeArea(Opc.Ua.ObjectIds.Server, false);
FilterDeclaration filter = new FilterDeclaration();
ushort namespaceIndex = (ushort)m_session.NamespaceUris.GetIndex(DsatsDemo.Namespaces.DsatsDemo);
filter.EventTypeId = ExpandedNodeId.ToNodeId(DsatsDemo.ObjectTypeIds.LockConditionType, m_session.NamespaceUris);
filter.AddSimpleField(String.Empty, BuiltInType.NodeId, false);
filter.AddSimpleField(Opc.Ua.BrowseNames.EventId, BuiltInType.ByteString, false);
filter.AddSimpleField(Opc.Ua.BrowseNames.EventType, BuiltInType.NodeId, false);
filter.AddSimpleField(Opc.Ua.BrowseNames.ConditionName, BuiltInType.String, true);
filter.AddSimpleField(new QualifiedName[] {
new QualifiedName(DsatsDemo.BrowseNames.LockState, namespaceIndex),
new QualifiedName(Opc.Ua.BrowseNames.CurrentState)
},
BuiltInType.String,
ValueRanks.Scalar,
true);
filter.AddSimpleField(new QualifiedName(DsatsDemo.BrowseNames.ClientUserId, namespaceIndex), BuiltInType.String, true);
filter.AddSimpleField(new QualifiedName(DsatsDemo.BrowseNames.SubjectName, namespaceIndex), BuiltInType.String, true);
filter.AddSimpleField(new QualifiedName(DsatsDemo.BrowseNames.SessionId, namespaceIndex), BuiltInType.NodeId, true);
EventsLV.ChangeFilter(filter, true);
m_filter = filter;
PhaseCB.Items.Clear();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = new NodeId(DsatsDemo.Objects.Rig_Phases, namespaceIndex);
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
DataValue value = m_session.ReadValue(new NodeId(DsatsDemo.Variables.Rig_CurrentPhase, namespaceIndex));
NodeId currentPhase = value.GetValue <NodeId>(null);
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, nodeToBrowse, false);
if (references != null)
{
for (int ii = 0; ii < references.Count; ii++)
{
PhaseCB.Items.Add(references[ii]);
if (currentPhase == references[ii].NodeId)
{
PhaseCB.SelectedIndex = ii;
}
}
}
m_connectedOnce = true;
}
EventsLV.IsSubscribed = true;
EventsLV.ChangeSession(m_session, true);
EventsLV.ConditionRefresh();
}
catch (Exception exception)
{
MessageBox.Show(exception.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void AddSubscription()
{
try
{
if (m_session == null)
{
return;
}
if (m_subscription != null)
{
m_session.RemoveSubscription(m_subscription);
m_subscription = null;
}
m_subscription = new Subscription();
m_subscription.PublishingEnabled = true;
m_subscription.PublishingInterval = 5000;
m_subscription.Priority = 1;
m_subscription.KeepAliveCount = 10;
m_subscription.LifetimeCount = 20;
m_subscription.MaxNotificationsPerPublish = 5000;
m_session.AddSubscription(m_subscription);
m_subscription.Create();
for (int ii = 0; ii < tanksRef.Count; ii++)
{
// filter the node (should be the tank)
if (tanksRef[ii].BrowseName.Name.Contains(TankDataTypes.tanks))
{
BrowseDescription n = new BrowseDescription();
n.NodeId = (NodeId)tanksRef[ii].NodeId;
n.BrowseDirection = BrowseDirection.Forward;
n.IncludeSubtypes = true;
n.NodeClassMask = (uint)(NodeClass.Variable);
n.ResultMask = (uint)(BrowseResultMask.All);
ReferenceDescriptionCollection props = ClientUtils.Browse(
m_session,
n,
false);
if (props.Count > 0)
{
for (int jj = 0; jj < props.Count; jj++)
{
// filter the Properties of the tank
if (TankDataTypes.containsProp(props[jj].DisplayName.Text))
{
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = (NodeId)props[jj].NodeId;
monitoredItem.DisplayName = props[jj].BrowseName.Name;
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.Notification += new MonitoredItemNotificationEventHandler(monitoredItem_Notification);
m_subscription.AddItem(monitoredItem);
}
}
}
}
}
m_subscription.ApplyChanges();
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
}
