/// <summary>
/// Prompts the user to select a node.
/// </summary>
public ReferenceDescription ShowDialog(
Session session,
NodeId rootId,
ViewDescription view,
string caption,
params NodeId[] referenceTypeIds)
{
// set the caption.
if (!String.IsNullOrEmpty(caption))
{
this.Text = caption;
}
// set default root.
if (NodeId.IsNull(rootId))
{
rootId = Opc.Ua.ObjectIds.ObjectsFolder;
}
// set default reference type.
if (referenceTypeIds == null)
{
referenceTypeIds = new NodeId[] { Opc.Ua.ReferenceTypeIds.HierarchicalReferences };
}
// initialize the control.
BrowseCTRL.Initialize(session, rootId, referenceTypeIds);
BrowseCTRL.View = view;
// display the dialog.
if (ShowDialog() != DialogResult.OK)
{
return(null);
}
return(BrowseCTRL.SelectedNode);
}
async void Window_PageClosing(object sender, RoutedEventArgs e)
{
if (m_masterPage == null && m_pages.Count > 0)
{
MessageDlg dialog = new MessageDlg("Close all sessions?", MessageDlgButton.Yes, MessageDlgButton.No);
MessageDlgButton result = await dialog.ShowAsync();
if (result != MessageDlgButton.Yes)
{
return;
}
}
BrowseCTRL.Clear();
for (int ii = 0; ii < m_pages.Count; ii++)
{
if (Object.ReferenceEquals(m_pages[ii], sender))
{
m_pages.RemoveAt(ii);
break;
}
}
}
/// <summary>
/// Connects to a server.
/// </summary>
public void Connect(ConfiguredEndpoint endpoint)
{
if (endpoint == null)
{
return;
}
Session session = SessionsCTRL.Connect(endpoint);
if (session != null)
{
// stop any reconnect operation.
if (m_reconnectHandler != null)
{
m_reconnectHandler.Dispose();
m_reconnectHandler = null;
}
m_session = session;
m_session.KeepAlive += new KeepAliveEventHandler(StandardClient_KeepAlive);
BrowseCTRL.SetView(m_session, BrowseViewType.Objects, null);
StandardClient_KeepAlive(m_session, null);
}
}
private void ChangeViewBTN_Click(object sender, EventArgs e)
{
try
{
ViewDescription view = null;
ReferenceDescription reference = ViewCB.SelectedItem as ReferenceDescription;
if (reference != null && !NodeId.IsNull(reference.NodeId))
{
view = new ViewDescription();
view.ViewId = ExpandedNodeId.ToNodeId(reference.NodeId, m_session.NamespaceUris);
view.ViewVersion = 0;
view.Timestamp = DateTime.MinValue;
}
BrowseCTRL.View = view;
BrowseCTRL.RefreshSelection();
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <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;
// browse the instances in the server.
BrowseCTRL.Initialize(m_session,
ObjectIds.RootFolder,
ReferenceTypeIds.Organizes,
ReferenceTypeIds.Aggregates,
ReferenceTypeIds.HierarchicalReferences);
if (m_session != null)
{
var typeSystem = new ComplexTypeSystem(m_session);
typeSystem.Load().Wait();
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
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>
/// Changes the session used by the control.
/// </summary>
/// <param name="session">The session.</param>
public void ChangeSession(Session session)
{
BrowseCTRL.ChangeSession(session);
}
/// <summary>
/// The reference for the parent of the currently selected node.
/// </summary>
public void RefreshSelection()
{
BrowseCTRL.RefreshSelection();
}
/// <summary>
/// Returns the child node at the specified index.
/// </summary>
public ReferenceDescription GetChildOfSelectedNode(int index)
{
return(BrowseCTRL.GetChildOfSelectedNode(index));
}
private void toolStripMainWriteValueButton_Click(object sender, EventArgs e)
{
BrowseCTRL.WriteMI_Click(sender, e);
}
private void toolStripMainReadValueButton_Click(object sender, EventArgs e)
{
BrowseCTRL.ReadMI_Click(sender, e);
}
private void toolStripMainBrowseASButton_Click(object sender, EventArgs e)
{
BrowseCTRL.BrowseMI_Click(sender, e);
}
