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UA-.NETStandard/SampleApplications/Samples/Controls.Net4/Sessions/SessionTreeCtrl.cs
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44 KiB
C#

/* ========================================================================
* Copyright (c) 2005-2019 The OPC Foundation, Inc. All rights reserved.
*
* OPC Foundation MIT License 1.00
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
* ======================================================================*/
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Reflection;
using System.IO;
using Opc.Ua.Client;
using Opc.Ua.Client.Controls;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
namespace Opc.Ua.Sample.Controls
{
public partial class SessionTreeCtrl : Opc.Ua.Client.Controls.BaseTreeCtrl
{
#region Contructors
public SessionTreeCtrl()
{
InitializeComponent();
m_eventRegistrations = new Dictionary<object,TreeNode>();
m_endpointUrls = new StringCollection();
m_dialogs = new Dictionary<Subscription,SubscriptionDlg>();
m_SessionSubscriptionsChanged = new EventHandler(Session_SubscriptionsChanged);
m_SubscriptionStateChanged = new SubscriptionStateChangedEventHandler(Subscription_StateChanged);
}
#endregion
#region Private Fields
private BrowseTreeCtrl m_AddressSpaceCtrl;
private NotificationMessageListCtrl m_NotificationMessagesCtrl;
private ToolStripStatusLabel m_ServerStatusCtrl;
private EventHandler m_SessionSubscriptionsChanged;
private SubscriptionStateChangedEventHandler m_SubscriptionStateChanged;
private Dictionary<object,TreeNode> m_eventRegistrations;
private StringCollection m_endpointUrls;
private Dictionary<Subscription,SubscriptionDlg> m_dialogs;
private ApplicationConfiguration m_configuration;
private ServiceMessageContext m_messageContext;
private ConfiguredEndpoint m_endpoint;
private string m_filePath;
#endregion
#region Public Interface
/// <summary>
/// The configuration to use when creating sessions.
/// </summary>
public ApplicationConfiguration Configuration
{
get { return m_configuration; }
set { m_configuration = value; }
}
/// <summary>
/// The message context to use with the sessions.
/// </summary>
public ServiceMessageContext MessageContext
{
get { return m_messageContext; }
set { m_messageContext = value; }
}
/// <summary>
/// The locales to use when creating the session.
/// </summary>
public string[] PreferredLocales { get; set; }
/// <summary>
/// Closes all open sessions within the control.
/// </summary>
public void Close()
{
// close any dialogs.
foreach (SubscriptionDlg dialog in new List<SubscriptionDlg>(m_dialogs.Values))
{
dialog.Close();
}
// close all active sessions.
foreach (TreeNode root in NodesTV.Nodes)
{
Session session = root.Tag as Session;
if (session != null)
{
session.Close();
}
}
Clear();
}
/// <summary>
/// Clears the contents of the control,
/// </summary>
public void Clear()
{
// close all active sessions.
foreach (TreeNode root in NodesTV.Nodes)
{
Session session = root.Tag as Session;
if (session != null)
{
session.Close();
}
}
Clear(NodesTV.Nodes);
}
/// <summary>
/// The control used to display the address space for a session.
/// </summary>
public BrowseTreeCtrl AddressSpaceCtrl
{
get { return m_AddressSpaceCtrl; }
set { m_AddressSpaceCtrl = value; }
}
/// <summary>
/// The control used to display the notification messages returned for a session..
/// </summary>
public NotificationMessageListCtrl NotificationMessagesCtrl
{
get { return m_NotificationMessagesCtrl; }
set { m_NotificationMessagesCtrl = value; }
}
/// <summary>
/// The control use to display the selected server's status.
/// </summary>
public ToolStripStatusLabel ServerStatusCtrl
{
get { return m_ServerStatusCtrl; }
set { m_ServerStatusCtrl = value; }
}
/// <summary>
/// Creates a session with the endpoint.
/// </summary>
public async Task<Session> Connect(ConfiguredEndpoint endpoint)
{
if (endpoint == null) throw new ArgumentNullException("endpoint");
EndpointDescriptionCollection availableEndpoints = null;
// check if the endpoint needs to be updated.
if (endpoint.UpdateBeforeConnect)
{
ConfiguredServerDlg configurationDialog = new ConfiguredServerDlg();
endpoint = configurationDialog.ShowDialog(endpoint, m_configuration);
if (endpoint == null)
{
return null;
}
availableEndpoints = configurationDialog.AvailableEnpoints;
}
m_endpoint = endpoint;
// copy the message context.
m_messageContext = m_configuration.CreateMessageContext(true);
X509Certificate2 clientCertificate = null;
X509Certificate2Collection clientCertificateChain = null;
if (endpoint.Description.SecurityPolicyUri != SecurityPolicies.None)
{
if (m_configuration.SecurityConfiguration.ApplicationCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate must be specified.");
}
clientCertificate = await m_configuration.SecurityConfiguration.ApplicationCertificate.Find(true);
if (clientCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate cannot be found.");
}
// load certificate chain
clientCertificateChain = new X509Certificate2Collection(clientCertificate);
List<CertificateIdentifier> issuers = new List<CertificateIdentifier>();
await m_configuration.CertificateValidator.GetIssuers(clientCertificate, issuers);
for (int i = 0; i < issuers.Count; i++)
{
clientCertificateChain.Add(issuers[i].Certificate);
}
}
// create the channel.
ITransportChannel channel = SessionChannel.Create(
m_configuration,
endpoint.Description,
endpoint.Configuration,
clientCertificate,
m_configuration.SecurityConfiguration.SendCertificateChain ? clientCertificateChain : null,
m_messageContext);
// create the session.
return Connect(endpoint, channel, availableEndpoints);
}
/// <summary>
/// Opens a new session.
/// </summary>
public Session Connect(ConfiguredEndpoint endpoint, ITransportChannel channel, EndpointDescriptionCollection availableEndpoints)
{
if (channel == null) throw new ArgumentNullException("channel");
try
{
// create the session.
Session session = new Session(channel, m_configuration, endpoint, null);
session.ReturnDiagnostics = DiagnosticsMasks.All;
if (!new SessionOpenDlg().ShowDialog(session, PreferredLocales))
{
return null;
}
// session now owns the channel.
channel = null;
// delete the existing session.
Close();
// add session to tree.
AddNode(session);
// return the new session.
return session;
}
finally
{
// ensure the channel is closed on error.
if (channel != null)
{
channel.Close();
}
}
}
/// <summary>
/// Deletes a session.
/// </summary>
public void Delete(Session session)
{
if (session == null) throw new ArgumentNullException("session");
TreeNode node = FindNode(NodesTV.Nodes, session);
if (node != null)
{
Clear(node.Nodes);
node.Remove();
}
// close any dialogs.
foreach (SubscriptionDlg dialog in new List<SubscriptionDlg>(m_dialogs.Values))
{
dialog.Close();
}
session.Close();
NodesTV.SelectedNode = null;
SelectNode();
}
/// <summary>
/// Deletes a subscription.
/// </summary>
public void Delete(Subscription subscription)
{
if (subscription == null) throw new ArgumentNullException("subscription");
// close any dialog.
SubscriptionDlg dialog = null;
if (m_dialogs.TryGetValue(subscription, out dialog))
{
dialog.Close();
}
Session session = subscription.Session;
session.RemoveSubscription(subscription);
TreeNode node = FindNode(NodesTV.Nodes, subscription);
if (node != null)
{
Clear(node.Nodes);
node.Remove();
}
NodesTV.SelectedNode = FindNode(NodesTV.Nodes, session);
}
/// <summary>
/// Deletes a monitored item.
/// </summary>
public void Delete(MonitoredItem monitoredItem)
{
if (monitoredItem == null) throw new ArgumentNullException("monitoredItem");
TreeNode node = FindNode(NodesTV.Nodes, monitoredItem);
if (node != null)
{
Clear(node.Nodes);
node.Remove();
}
Subscription subscription = monitoredItem.Subscription;
subscription.RemoveItem(monitoredItem);
subscription.ApplyChanges();;
NodesTV.SelectedNode = FindNode(NodesTV.Nodes, subscription);
}
/// <summary>
/// Creates a new subscription.
/// </summary>
public Subscription CreateSubscription(Session session)
{
// create form.
SubscriptionDlg dialog = new SubscriptionDlg();
dialog.FormClosing += new FormClosingEventHandler(Subscription_FormClosing);
// create subscription.
Subscription subscription = dialog.New(session);
if (subscription != null)
{
m_dialogs.Add(subscription, dialog);
subscription.Handle = dialog;
return subscription;
}
return null;
}
public void Reload(Session session)
{
// update any dialogs.
foreach (SubscriptionDlg dialog in new List<SubscriptionDlg>(m_dialogs.Values))
{
foreach(Subscription subscription in session.Subscriptions)
{
if (subscription.Handle == dialog)
{
dialog.Show(subscription);
}
}
}
// clear all nodes.
Clear(NodesTV.Nodes);
// add session to tree.
AddNode(session);
SelectNode();
}
#endregion
#region Overridden Members
/// <see cref="BaseTreeCtrl.EnableMenuItems" />
protected override void EnableMenuItems(TreeNode clickedNode)
{
NewSessionMI.Enabled = true;
NewWindowMI.Visible = this.FindForm() is ClientForm;
NewWindowMI.Enabled = true;
Session session = clickedNode.Tag as Session;
if (session != null)
{
SessionSaveMI.Enabled = true;
SessionLoadMI.Enabled = true;
SetLocaleMI.Enabled = true;
DeleteMI.Enabled = true;
ReadMI.Enabled = true;
WriteMI.Enabled = true;
BrowseMI.Enabled = session.Connected;
BrowseAllMI.Enabled = BrowseMI.Enabled;
BrowseObjectsMI.Enabled = BrowseMI.Enabled;
BrowseObjectTypesMI.Enabled = BrowseMI.Enabled;
BrowseEventTypesMI.Enabled = BrowseMI.Enabled;
BrowseServerViewsMI.Enabled = BrowseMI.Enabled;
BrowseVariableTypesMI.Enabled = BrowseMI.Enabled;
BrowseDataTypesMI.Enabled = BrowseMI.Enabled;
BrowseReferenceTypesMI.Enabled = BrowseMI.Enabled;
SubscriptionMI.Enabled = session.Connected;
SubscriptionCreateMI.Enabled = SubscriptionMI.Enabled;
}
Subscription subscription = clickedNode.Tag as Subscription;
if (subscription != null)
{
DeleteMI.Enabled = true;
ReadMI.Enabled = true;
WriteMI.Enabled = true;
SubscriptionMI.Enabled = subscription.Session.Connected;
SubscriptionMonitorMI.Enabled = SubscriptionMI.Enabled;
SubscriptionEnabledPublishingMI.Enabled = SubscriptionMI.Enabled;
SubscriptionEnabledPublishingMI.Checked = subscription.CurrentPublishingEnabled;
}
MonitoredItem monitoredItem = clickedNode.Tag as MonitoredItem;
if (monitoredItem != null)
{
DeleteMI.Enabled = true;
ReadMI.Enabled = true;
WriteMI.Enabled = true;
}
}
/// <summary>
/// Finds the first tag in the tree above the node that matches the type argument.
/// </summary>
private T Get<T>(TreeNode node)
{
if (node == null)
{
return default(T);
}
if (node.Tag is T)
{
return (T)node.Tag ;
}
return Get<T>(node.Parent);
}
/// <see cref="BaseTreeCtrl.SelectNode" />
protected override void SelectNode()
{
base.SelectNode();
TreeNode selectedNode = NodesTV.SelectedNode;
Session session = Get<Session>(selectedNode);
Subscription subscription = Get<Subscription>(selectedNode);
// update address space control.
if (m_AddressSpaceCtrl != null)
{
m_AddressSpaceCtrl.SetView(session, BrowseViewType.Objects, null);
}
// update notification messages control.
if (m_NotificationMessagesCtrl != null)
{
m_NotificationMessagesCtrl.Initialize(session, subscription);
}
}
#endregion
/// <summary>
/// Recursively clears a subtree.
/// </summary>
private void Clear(TreeNodeCollection nodes)
{
foreach (TreeNode node in nodes)
{
if (m_eventRegistrations.Remove(node.Tag))
{
if (node.Tag is Session)
{
((Session)node.Tag).SubscriptionsChanged -= m_SessionSubscriptionsChanged;
}
else if (node.Tag is Subscription)
{
((Subscription)node.Tag).StateChanged -= m_SubscriptionStateChanged;
}
}
Clear(node.Nodes);
}
nodes.Clear();
}
#region Private Members
/// <summary>
/// Called when the set of items for a subscription changes.
/// </summary>
private void Subscription_StateChanged(object sender, EventArgs e)
{
TreeNode node = FindNode(NodesTV.Nodes, sender);
if (node == null)
{
return;
}
UpdateNode(node, sender as Subscription);
}
/// <summary>
/// Called when the set of subscriptions for a session changes.
/// </summary>
private void Session_SubscriptionsChanged(object sender, EventArgs e)
{
TreeNode node = FindNode(NodesTV.Nodes, sender);
if (node == null)
{
return;
}
UpdateNode(node, sender as Session);
node.EnsureVisible();
node.Expand();
}
/// <summary>
/// Recursively finds the node with the specified tag.
/// </summary>
private TreeNode FindNode(TreeNodeCollection collection, object tag)
{
foreach (TreeNode node in collection)
{
if (Object.ReferenceEquals(node.Tag, tag))
{
return node;
}
TreeNode child = FindNode(node.Nodes, tag);
if (child != null)
{
return child;
}
}
return null;
}
/// <summary>
/// Recursively finds the node with the specified tag and returns the immediate child with the specified child tag.
/// </summary>
private TreeNode FindChild(TreeNodeCollection collection, object tag, object childTag)
{
TreeNode parent = FindNode(collection, tag);
if (parent == null)
{
return null;
}
foreach (TreeNode child in parent.Nodes)
{
if (Object.ReferenceEquals(child.Tag, childTag))
{
return child;
}
}
return null;
}
/// <summary>
/// Adds a session to the tree.
/// </summary>
private void AddNode(Session session)
{
if (session == null) throw new ArgumentNullException("session");
TreeNode node = AddNode(null, session, session.SessionName, "Server");
UpdateNode(node, session);
if (!m_eventRegistrations.ContainsKey(session))
{
session.SubscriptionsChanged += m_SessionSubscriptionsChanged;
m_eventRegistrations.Add(session, node);
}
NodesTV.SelectedNode = node;
}
/// <summary>
/// Updates a session node in the tree.
/// </summary>
private void UpdateNode(TreeNode parent, Session session)
{
UpdateNode(parent, session, session.SessionName, (session.Connected)?"Server":"ServerStopped");
Clear(parent.Nodes);
if (Object.ReferenceEquals(parent.Tag, session))
{
foreach (Subscription subscription in session.Subscriptions)
{
AddNode(parent, subscription);
}
}
}
/// <summary>
/// Adds a subscription to the tree.
/// </summary>
private void AddNode(TreeNode parent, Subscription subscription)
{
TreeNode node = AddNode(parent, subscription, subscription.DisplayName, "Object");
UpdateNode(node, subscription);
if (!m_eventRegistrations.ContainsKey(subscription))
{
subscription.StateChanged += m_SubscriptionStateChanged;
m_eventRegistrations.Add(subscription, node);
}
}
/// <summary>
/// Updates a subscription node in the tree.
/// </summary>
private void UpdateNode(TreeNode parent, Subscription subscription)
{
Clear(parent.Nodes);
parent.Text = subscription.DisplayName;
foreach (MonitoredItem monitoredItem in subscription.MonitoredItems)
{
AddNode(parent, monitoredItem, monitoredItem.DisplayName, "Property");
}
}
#endregion
private void BrowseAllMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new AddressSpaceDlg().Show(session, BrowseViewType.All, null);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseObjectsMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new AddressSpaceDlg().Show(session, BrowseViewType.Objects, null);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseObjectTypesMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new BrowseTypesDlg().Show(session, ObjectTypeIds.BaseObjectType);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseVariableTypesMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new BrowseTypesDlg().Show(session, VariableTypeIds.BaseDataVariableType);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseDataTypesMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new AddressSpaceDlg().Show(session, BrowseViewType.DataTypes, null);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseReferenceTypesMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new AddressSpaceDlg().Show(session, BrowseViewType.ReferenceTypes, null);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseEventTypesMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
new BrowseTypesDlg().Show(session, ObjectTypeIds.BaseEventType);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void BrowseServerViewsMI_DropDownOpening(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
BrowseServerViewsMI.DropDown.Items.Clear();
Browser browser = new Browser(session);
browser.BrowseDirection = BrowseDirection.Forward;
browser.IncludeSubtypes = true;
browser.ReferenceTypeId = null;
browser.NodeClassMask = (int)NodeClass.View;
browser.ContinueUntilDone = true;
ReferenceDescriptionCollection references = browser.Browse(Objects.ViewsFolder);
foreach (ReferenceDescription reference in references)
{
ToolStripItem item = BrowseServerViewsMI.DropDown.Items.Add(reference.ToString());
item.Click += new EventHandler(BrowseServerViewsMI_Click);
item.Tag = reference;
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
void BrowseServerViewsMI_Click(object sender, EventArgs e)
{
try
{
TreeNode selectedNode = NodesTV.SelectedNode;
// change nothing if nothing selected.
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
ToolStripMenuItem menuitem = sender as ToolStripMenuItem;
if (menuitem != null)
{
ReferenceDescription reference = menuitem.Tag as ReferenceDescription;
new AddressSpaceDlg().Show(
session,
BrowseViewType.ServerDefinedView,
(NodeId)reference.NodeId);
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SubscriptionCreateMI_Click(object sender, EventArgs e)
{
try
{
// get current selection.
TreeNode selectedNode = NodesTV.SelectedNode;
if (selectedNode == null)
{
return;
}
// get selected session.
Session session = selectedNode.Tag as Session;
if (session == null)
{
return;
}
// create the subscription.
CreateSubscription(session);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
void Subscription_FormClosing(object sender, FormClosingEventArgs e)
{
foreach (KeyValuePair<Subscription,SubscriptionDlg> current in m_dialogs)
{
if (current.Value == sender)
{
m_dialogs.Remove(current.Key);
return;
}
}
}
private async void NewSessionMI_Click(object sender, EventArgs e)
{
try
{
await Connect(m_endpoint);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void DeleteMI_Click(object sender, EventArgs e)
{
try
{
// get current selection.
TreeNode selectedNode = NodesTV.SelectedNode;
if (selectedNode == null)
{
return;
}
// delete session.
Session session = selectedNode.Tag as Session;
if (session != null)
{
Delete(session);
}
// delete subscription
Subscription subscription = selectedNode.Tag as Subscription;
if (subscription != null)
{
Delete(subscription);
}
// delete monitored item
MonitoredItem monitoredItem = selectedNode.Tag as MonitoredItem;
if (monitoredItem != null)
{
Delete(monitoredItem);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void ReadMI_Click(object sender, EventArgs e)
{
try
{
// get the current session.
Session session = Get<Session>(NodesTV.SelectedNode);
if (session == null || !session.Connected)
{
return;
}
// build list of nodes to read.
ReadValueIdCollection valueIds = new ReadValueIdCollection();
MonitoredItem monitoredItem = Get<MonitoredItem>(NodesTV.SelectedNode);
if (monitoredItem != null)
{
ReadValueId valueId = new ReadValueId();
valueId.NodeId = monitoredItem.ResolvedNodeId;
valueId.AttributeId = monitoredItem.AttributeId;
valueId.IndexRange = monitoredItem.IndexRange;
valueId.DataEncoding = monitoredItem.Encoding;
valueIds.Add(valueId);
}
else
{
Subscription subscription = Get<Subscription>(NodesTV.SelectedNode);
if (subscription != null)
{
foreach (MonitoredItem item in subscription.MonitoredItems)
{
ReadValueId valueId = new ReadValueId();
valueId.NodeId = item.ResolvedNodeId;
valueId.AttributeId = item.AttributeId;
valueId.IndexRange = item.IndexRange;
valueId.DataEncoding = item.Encoding;
valueIds.Add(valueId);
}
}
}
// show form.
new ReadDlg().Show(session, valueIds);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void WriteMI_Click(object sender, EventArgs e)
{
try
{
// get the current session.
Session session = Get<Session>(NodesTV.SelectedNode);
if (session == null || !session.Connected)
{
return;
}
// build list of nodes to read.
WriteValueCollection values = new WriteValueCollection();
MonitoredItem monitoredItem = Get<MonitoredItem>(NodesTV.SelectedNode);
if (monitoredItem != null)
{
WriteValue value = new WriteValue();
value.NodeId = monitoredItem.ResolvedNodeId;
value.AttributeId = monitoredItem.AttributeId;
value.IndexRange = monitoredItem.IndexRange;
MonitoredItemNotification datachange = monitoredItem.LastValue as MonitoredItemNotification;
if (datachange != null)
{
value.Value = (DataValue)Utils.Clone(datachange.Value);
}
values.Add(value);
}
else
{
Subscription subscription = Get<Subscription>(NodesTV.SelectedNode);
if (subscription != null)
{
foreach (MonitoredItem item in subscription.MonitoredItems)
{
WriteValue value = new WriteValue();
value.NodeId = item.ResolvedNodeId;
value.AttributeId = item.AttributeId;
value.IndexRange = item.IndexRange;
MonitoredItemNotification datachange = item.LastValue as MonitoredItemNotification;
if (datachange != null)
{
value.Value = (DataValue)Utils.Clone(datachange.Value);
}
values.Add(value);
}
}
}
// show form.
new WriteDlg().Show(session, values);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SubscriptionEnabledPublishingMI_Click(object sender, EventArgs e)
{
try
{
// get current selection.
TreeNode selectedNode = NodesTV.SelectedNode;
if (selectedNode == null)
{
return;
}
// delete session.
Subscription subscription = selectedNode.Tag as Subscription;
if (subscription != null)
{
subscription.SetPublishingMode(SubscriptionEnabledPublishingMI.Checked);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SubscriptionMonitorMI_Click(object sender, EventArgs e)
{
try
{
// get selected session.
Subscription subscription = SelectedTag as Subscription;
if (subscription == null)
{
return;
}
// show form
SubscriptionDlg dialog = null;
if (!m_dialogs.TryGetValue(subscription, out dialog))
{
dialog = new SubscriptionDlg();
dialog.FormClosing += new FormClosingEventHandler(Subscription_FormClosing);
m_dialogs.Add(subscription, dialog);
subscription.Handle = dialog;
}
dialog.Show(subscription);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SessionSaveMI_Click(object sender, EventArgs e)
{
try
{
// get selected session.
Session session = SelectedTag as Session;
if (session == null)
{
return;
}
// create a default file.
if (String.IsNullOrEmpty(m_filePath))
{
FileInfo defaultInfo = new FileInfo(Application.ExecutablePath);
m_filePath = defaultInfo.DirectoryName;
m_filePath += Path.DirectorySeparatorChar;
m_filePath += session.SessionName;
m_filePath += ".xml";
}
// prompt user to select file.
FileInfo fileInfo = new FileInfo(m_filePath);
SaveFileDialog dialog = new SaveFileDialog();
dialog.CheckFileExists = false;
dialog.CheckPathExists = true;
dialog.DefaultExt = ".xml";
dialog.Filter = "Result Files (*.xml)|*.xml|All Files (*.*)|*.*";
dialog.ValidateNames = true;
dialog.Title = "Save Subscriptions";
dialog.FileName = m_filePath;
dialog.InitialDirectory = fileInfo.DirectoryName;
dialog.RestoreDirectory = true;
if (dialog.ShowDialog() != DialogResult.OK)
{
return;
}
// save file.
session.Save(dialog.FileName);
// remember file path.
m_filePath = dialog.FileName;
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SessionLoadMI_Click(object sender, EventArgs e)
{
try
{
// get selected session.
Session session = SelectedTag as Session;
if (session == null)
{
return;
}
// create a default file.
if (String.IsNullOrEmpty(m_filePath))
{
FileInfo defaultInfo = new FileInfo(Application.ExecutablePath);
m_filePath = defaultInfo.DirectoryName;
m_filePath += Path.DirectorySeparatorChar;
m_filePath += session.SessionName;
m_filePath += ".xml";
}
FileInfo fileInfo = new FileInfo(m_filePath);
OpenFileDialog dialog = new OpenFileDialog();
dialog.CheckFileExists = true;
dialog.CheckPathExists = true;
dialog.DefaultExt = ".xml";
dialog.Filter = "Result Files (*.xml)|*.xml|All Files (*.*)|*.*";
dialog.Multiselect = false;
dialog.ValidateNames = true;
dialog.Title = "Load Subscriptions";
dialog.FileName = m_filePath;
dialog.InitialDirectory = fileInfo.DirectoryName;
dialog.RestoreDirectory = true;
if (dialog.ShowDialog() != DialogResult.OK)
{
return;
}
// remember file path.
m_filePath = dialog.FileName;
// load file.
IEnumerable<Subscription> subscriptions = session.Load(dialog.FileName);
// create the subscriptions automatically if the session is connected.
if (session.Connected)
{
foreach (Subscription subscription in subscriptions)
{
subscription.Create();
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void NewWindowMI_Click(object sender, EventArgs e)
{
try
{
ClientForm form = this.FindForm() as ClientForm;
if (form != null)
{
form.OpenForm();
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void SetLocaleMI_Click(object sender, EventArgs e)
{
try
{
// get selected session.
Session session = SelectedTag as Session;
if (session == null)
{
return;
}
string locale = new SelectLocaleDlg().ShowDialog(session);
if (locale == null)
{
return;
}
PreferredLocales = new string[] { locale };
session.ChangePreferredLocales(new StringCollection(PreferredLocales));
}
catch (Exception exception)
{
MessageBox.Show(exception.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}