/// <summary>
/// Returns value of the field name containing the event type.
/// </summary>
public static T GetEventValue <T>(this EventFieldList eventFields, string name,
MonitoredItem monitoredItem, T defaultValue = default)
{
// get value
var value = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, name);
if (value != null)
{
return(value.As <T>());
}
return(defaultValue);
}
/// <summary>
///
/// </summary>
/// <param name="monitoredItem"></param>
/// <param name="e"></param>
protected virtual void ItemNotificationHandler(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
try
{
if (monitoredItem != null)
{
Opc.Ua.MonitoredItemNotification change = e.NotificationValue as Opc.Ua.MonitoredItemNotification;
if (change != null)
{
DataValue dv = change.Value;
if (dv != null)
{
ListViewItem[] lvis = ItemsLV.Items.Find(monitoredItem.ClientHandle.ToString(), false);
if (lvis.Length > 0)
{
DiagnosticListViewItem dlvi = lvis[0].Tag as DiagnosticListViewItem;
dlvi.UpdateInListView(lvis[0], dv, m_Session);
}
}
else
{
Utils.Trace("dv is null: {0}", MethodBase.GetCurrentMethod());
}
}
else
{
EventFieldList eventFields = e.NotificationValue as EventFieldList;
if (eventFields != null)
{
// get the event fields.
NodeId eventType = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.EventType) as NodeId;
string sourceName = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.SourceName) as string;
DateTime? time = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Time) as DateTime?;
ushort? severity = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Severity) as ushort?;
LocalizedText message = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Message) as LocalizedText;
NodeId sourceNode = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.SourceNode) as NodeId;
if (eventType == new NodeId(ObjectTypes.AuditAddNodesEventType))
{
}
else
{
}
}
else
{
Utils.Trace("eventFields is null " + MethodBase.GetCurrentMethod());
}
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <see cref="BaseListCtrl.UpdateItem" />
protected override void UpdateItem(ListViewItem listItem, object item)
{
EventFieldList eventFields = item as EventFieldList;
if (eventFields == null)
{
base.UpdateItem(listItem, item);
return;
}
MonitoredItem monitoredItem = m_subscription.FindItemByClientHandle(eventFields.ClientHandle);
if (monitoredItem == null)
{
listItem.SubItems[0].Text = String.Format("[{0}]", eventFields.ClientHandle);
listItem.SubItems[1].Text = "(unknown)";
listItem.SubItems[2].Text = null;
listItem.SubItems[3].Text = null;
listItem.SubItems[4].Text = null;
listItem.SubItems[5].Text = null;
listItem.Tag = eventFields;
return;
}
// get the event fields.
NodeId eventType = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.EventType) as NodeId;
string sourceName = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.SourceName) as string;
DateTime? time = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.Time) as DateTime?;
ushort? severity = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.Severity) as ushort?;
LocalizedText message = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.Message) as LocalizedText;
// fill in the columns.
listItem.SubItems[0].Text = String.Format("[{0}]", eventFields.ClientHandle);
INode typeNode = m_subscription.Session.NodeCache.Find(eventType);
if (typeNode == null)
{
listItem.SubItems[1].Text = String.Format("{0}", eventType);
}
else
{
listItem.SubItems[1].Text = String.Format("{0}", typeNode);
}
listItem.SubItems[2].Text = String.Format("{0}", sourceName);
if (time != null && time.Value != DateTime.MinValue)
{
listItem.SubItems[3].Text = String.Format("{0:HH:mm:ss.fff}", time.Value.ToLocalTime());
}
else
{
listItem.SubItems[3].Text = String.Empty;
}
listItem.SubItems[4].Text = String.Format("{0}", severity);
if (message != null)
{
listItem.SubItems[5].Text = String.Format("{0}", message.Text);
}
else
{
listItem.SubItems[5].Text = String.Empty;
}
listItem.Tag = eventFields;
}
/// <summary>
/// Processes a Publish response from the server.
/// </summary>
///
void ItemNotification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
if (InvokeRequired)
{
BeginInvoke(new MonitoredItemNotificationEventHandler(ItemNotification), monitoredItem, e);
return;
}
else if (!IsHandleCreated)
{
return;
}
try
{
if (monitoredItem != null)
{
string Key = monitoredItem.StartNodeId.Identifier.ToString() + "." + monitoredItem.RelativePath;
ListViewItem[] lvis = listView1.Items.Find(Key, true);
Opc.Ua.MonitoredItemNotification change = e.NotificationValue as Opc.Ua.MonitoredItemNotification;
if (change != null)
{
DataValue dv = change.Value;
if (lvis.Length == 1)
{
ListViewItem lvi = lvis[0];
int subindex = lvi.SubItems.IndexOfKey(Key);
ListViewItem.ListViewSubItem si = lvi.SubItems[subindex];
TypedMonitoredItem mi = si.Tag as TypedMonitoredItem;
if (mi != null)
{
if (mi.ClientHandle == monitoredItem.ClientHandle)
{
if (dv != null && dv.Value != null)
{
if (monitoredItem.Status.Id == StatusCodes.BadNodeIdUnknown)
{
// Randy said we would get this, but we don't
RemoveSessionItem(lvi, true);
}
else
{
si.Text = mi.ToString(dv);
}
}
else
{
// This is what we get
RemoveSessionItem(lvi, true);
}
}
else
{
Utils.Trace("(mi.ClientHandle != monitoredItem.ClientHandle " + MethodBase.GetCurrentMethod());
}
}
else
{
Utils.Trace("mi is null " + MethodBase.GetCurrentMethod());
}
}
else
{
Utils.Trace("lvis.Length != 1 " + MethodBase.GetCurrentMethod());
}
}
else
{
EventFieldList eventFields = e.NotificationValue as EventFieldList;
if (eventFields != null)
{
// get the event fields.
NodeId eventType = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.EventType) as NodeId;
string sourceName = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.SourceName) as string;
DateTime? time = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Time) as DateTime?;
ushort? severity = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Severity) as ushort?;
LocalizedText message = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.Message) as LocalizedText;
NodeId sourceNode = monitoredItem.GetFieldValue(eventFields, ObjectTypes.BaseEventType, BrowseNames.SourceNode) as NodeId;
//Utils.Trace("eventType: {0}, message: {1}, sourceName: {2} sourceNode: {3}", eventType.ToString(), message.Text.ToString(), sourceName.ToString(), sourceNode.ToString());
if (eventType == new NodeId(ObjectTypes.AuditActivateSessionEventType))
{
Utils.Trace("AuditActivateSessionEventType detected " + MethodBase.GetCurrentMethod());
AddSessions();
m_Subscription.ModifyItems();
m_Subscription.ApplyChanges();
}
}
else
{
Utils.Trace("eventFields is null " + MethodBase.GetCurrentMethod());
}
}
}
else
{
Utils.Trace("monitoredItem is null " + MethodBase.GetCurrentMethod());
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}