本文整理汇总了C#中Opc.Ua.Client.MonitoredItem.GetFieldValue方法的典型用法代码示例。如果您正苦于以下问题：C# MonitoredItem.GetFieldValue方法的具体用法？C# MonitoredItem.GetFieldValue怎么用？C# MonitoredItem.GetFieldValue使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Opc.Ua.Client.MonitoredItem的用法示例。
在下文中一共展示了MonitoredItem.GetFieldValue方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ItemNotification
/// <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());
//.........这里部分代码省略.........
示例2: AddressSpaceChange_Notification
/// <summary>
/// Processes a Publish response from the UA server for AddressSpace changes.
/// </summary>
/// <param name="monitoredItem"></param>
/// <param name="e"></param>
void AddressSpaceChange_Notification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
try
{
EventFieldList eventFields = e.NotificationValue as EventFieldList;
if (eventFields == null)
{
return;
}
if (monitoredItem != null)
{
if (monitoredItem.ClientHandle != eventFields.ClientHandle)
{
return;
}
}
INode eventUA = monitoredItem.GetEventType(eventFields);
if (eventUA.NodeId == new NodeId(Opc.Ua.ObjectTypes.BaseModelChangeEventType))
{
//TODO:if we get this event we know a change was made, but we do not know what so we will beed to get all EventTypes and compare and update our config data
}
else if (eventUA.NodeId != new NodeId(Opc.Ua.ObjectTypes.GeneralModelChangeEventType))
{
//We are not interested in any other event, so we will return.
//If we can set the where clause on the filter for this item, this else clause can be removed.
return;
}
else
{
object v = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.GeneralModelChangeEventType, new QualifiedName(Opc.Ua.BrowseNames.Changes));
//ChangeStructureDataTypeCollection changes = (ChangeStructureDataTypeCollection) monitoredItem.GetFieldValue(eventFields, ObjectTypes.GeneralModelChangeEventType, new QualifiedName(GeneralModelChangeEvent.Names.Changes));
}
}
catch (Exception ex)
{
Utils.Trace(ex, "Unexpected error in AddressSpaceChange_Notification");
}
}示例3: MonitoredItem_Notification
/// <summary>
/// Processes a Publish response from the UA server.
/// </summary>
/// <param name="monitoredItem"></param>
/// <param name="e"></param>
void MonitoredItem_Notification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
try
{
EventFieldList eventFields = e.NotificationValue as EventFieldList;
if (eventFields == null)
{
return;
}
if (monitoredItem != null)
{
if (monitoredItem.ClientHandle != eventFields.ClientHandle)
{
return;
}
}
INode eventUA = monitoredItem.GetEventType(eventFields);
EventCategory cat = FindEventCatInfo(eventUA.BrowseName.ToString());
if (cat == null) return; // The event is not of a category that we recognize.
if (cat.EventType == OpcRcw.Ae.Constants.CONDITION_EVENT)
{
NodeId branchId = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.ConditionType, Opc.Ua.BrowseNames.BranchId) as NodeId;
if (!NodeId.IsNull(branchId)) return; // We don't support condition branches in the COM Proxy
}
EventNotification ev = new EventNotification();
ev.EventId = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, new QualifiedName(Opc.Ua.BrowseNames.EventId)) as byte[];
ev.SourceID = System.Convert.ToString(monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, new QualifiedName(Opc.Ua.BrowseNames.SourceName)));
ev.Time = System.Convert.ToDateTime(monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, new QualifiedName(Opc.Ua.BrowseNames.Time)));
ev.Message = System.Convert.ToString(monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, new QualifiedName(Opc.Ua.BrowseNames.Message)));
ev.EventType = cat.EventType;
ev.EventCategory = cat.CategoryID;
ev.Severity = System.Convert.ToInt32(monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, new QualifiedName(Opc.Ua.BrowseNames.Severity)));
List<EventAttribute> Attrs = GetEventAttributes(cat.CategoryID);
UniqueList<string> strEventNodeIds = new UniqueList<string>();
foreach (EventAttribute attr in Attrs)
if (attr.strEventNodeId != "")
strEventNodeIds.AddUnique(attr.strEventNodeId);
ev.EventAttributes = new Dictionary<int, object>();
foreach (EventAttribute attr in m_configFile.Attributes)
{
foreach (string strEventNodeId in strEventNodeIds)
{
if (attr.strEventNodeId == strEventNodeId)
{
object value = monitoredItem.GetFieldValue(eventFields, (NodeId)attr.strEventNodeId, new QualifiedName(attr.BrowseName, attr.BrowseNameNSIndex));
if (value == null)
{
ev.EventAttributes.Add(attr.AttributeID, "");
}
else if ((value.GetType() != null) & (short)ComUtils.GetVarType(value) != 0)
{
ev.EventAttributes.Add(attr.AttributeID, value);
}
else
{
// any value with a UA type that does not have a corresponding COM type will be returned as a string
ev.EventAttributes.Add(attr.AttributeID, value.ToString());
}
}
}
}
//Condition-Related Event properties
ev.ConditionName = "";
ev.SubConditionName = "";
ev.ChangeMask = 0;
ev.NewState = OpcRcw.Ae.Constants.CONDITION_ENABLED | OpcRcw.Ae.Constants.CONDITION_ACKED;
ev.Quality = OpcRcw.Da.Qualities.OPC_QUALITY_GOOD;
ev.AckRequired = false;
ev.ActiveTime = DateTime.Now;
ev.Cookie = 0;
if (ev.EventType == OpcRcw.Ae.Constants.CONDITION_EVENT)
SetConditionEventFields(monitoredItem, eventFields, ev, cat);
//Tracking Events and for Condition-Related Events which are acknowledgment notifications
if (cat.EventType == OpcRcw.Ae.Constants.TRACKING_EVENT)
ev.ActorID = System.Convert.ToString(monitoredItem.GetFieldValue(eventFields, (NodeId)eventUA.NodeId, new QualifiedName(Opc.Ua.BrowseNames.ClientUserId)));
IncomingEventHandler eventHandler = new IncomingEventHandler();
//extract the area associated with this event.
AreaNode areaNode;
string[] areas = null;
if (m_notifiers.TryGetValue(monitoredItem.ClientHandle, out areaNode))
{
areas = new string[] { areaNode.AreaName };
}
//.........这里部分代码省略.........
示例4: SetConditionEventFields
/// <summary>
/// Additional new event processing when the received event maps to a (COM AE) condition event type. We need to extract
/// the condition name, subcondition name, changeMask, newState, Quality, AckRequired, ActiveTime and cookie.
/// </summary>
/// <param name="monitoredItem"></param>
/// <param name="eventFields"></param>
/// <param name="ev"></param>
/// <param name="cat"></param>
void SetConditionEventFields(MonitoredItem monitoredItem, EventFieldList eventFields, EventNotification ev, EventCategory cat)
{
LocalizedText localText;
String ConditionName;
StatusCode? Status;
DateTime? TimeOfLastTransition;
try
{
NodeId eventType = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.BaseEventType, Opc.Ua.BrowseNames.EventType) as NodeId;
// UA events are categorized into three subsets. The first of these subsets consists of types and subtypes of ConditionType
// which yields the event condition name, quality and enable/disable status.
if (m_session.TypeTree.IsTypeOf(eventType, Opc.Ua.ObjectTypes.ConditionType))
{
ConditionName = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.ConditionType, Opc.Ua.BrowseNames.ConditionName) as String;
if (ConditionName != null)
ev.ConditionName = ConditionName;
else
ev.ConditionName = cat.BrowseName;
// Set the subcondition name as conditionname for now. If the event of of type AlarmconditionType and a subcondition (UA substate)
// exists then this field will be set accordingly.
ev.SubConditionName = ev.ConditionName;
bool? enabled = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.ConditionType,
"/EnabledState/Id", Attributes.Value) as bool?;
Status = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.ConditionType,
"/Quality", Attributes.Value) as StatusCode?;
ev.Quality = MapStatusToQuality(Status);
if (enabled == true)
ev.NewState |= OpcRcw.Ae.Constants.CONDITION_ENABLED;
else
ev.NewState &= ~OpcRcw.Ae.Constants.CONDITION_ENABLED;
}
// The second of the three UA event subsets consists of types and subtypes of AcknowledgeableconditionType.
// This categorization yields events which support acknowledgement in addition to enable/disable state
if (m_session.TypeTree.IsTypeOf(eventType, Opc.Ua.ObjectTypes.AcknowledgeableConditionType))
{
bool? acked = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.AcknowledgeableConditionType,
"/AckedState/Id", Attributes.Value) as bool?;
// Extract the "ConditionId" (nodeId of the condition instance)
ev.ConditionId = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.AcknowledgeableConditionType,
"", Attributes.NodeId) as NodeId;
ev.AcknowledgeMethod = Opc.Ua.Methods.AcknowledgeableConditionType_Acknowledge;
if (acked == true)
{
ev.NewState |= OpcRcw.Ae.Constants.CONDITION_ACKED;
ev.AckRequired = false;
}
else
{
ev.NewState &= ~OpcRcw.Ae.Constants.CONDITION_ACKED;
ev.AckRequired = true;
}
}
// the third of the three UA event subsets consists of types and subtypes of AlarmConditionType. This
// categorization yields events which support the notion of Active/Inactive and also may support substates
// (subconditions).
if (m_session.TypeTree.IsTypeOf(eventType, Opc.Ua.ObjectTypes.AlarmConditionType))
{
bool? active = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.AlarmConditionType,
"/ActiveState/Id", Attributes.Value) as bool?;
TimeOfLastTransition = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.AlarmConditionType,
"/ActiveState/TransitionTime", Attributes.Value) as DateTime?;
if (active == true)
{
ev.NewState |= OpcRcw.Ae.Constants.CONDITION_ACTIVE;
ev.ActiveTime = TimeOfLastTransition ?? DateTime.MinValue;
}
// Active subconditon.
localText = monitoredItem.GetFieldValue(eventFields, Opc.Ua.ObjectTypes.AlarmConditionType,
"/ActiveState/EffectiveDisplayName", Attributes.Value) as LocalizedText;
if (localText != null && localText.ToString() != "")
ev.SubConditionName = localText.ToString();
}
else // If this is not an AlarmConditionType (thus no UA active/inactive states apply) default to Active
ev.NewState |= OpcRcw.Ae.Constants.CONDITION_ACTIVE;
}
catch (Exception e)
//.........这里部分代码省略.........
示例5: ItemNotificationHandler
/// <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);
}
}