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>
/// Returns the child node at the specified index.
/// </summary>
public ReferenceDescription GetChildOfSelectedNode(int index)
{
return(BrowseCTRL.GetChildOfSelectedNode(index));
}