/// <summary>
/// Starts monitoring the value of the currently selected item.
/// </summary>
public void CreateMonitoredItem(ReferenceDescription node)
{
ListOfMonitoredItemCreateRequest itemsToCreate = new ListOfMonitoredItemCreateRequest();
MonitoredItemCreateRequest itemToCreate = new MonitoredItemCreateRequest();
itemToCreate.ItemToMonitor = new ReadValueId();
itemToCreate.ItemToMonitor.NodeId = new NodeId(node.NodeId);
itemToCreate.ItemToMonitor.AttributeId = Attributes.Value;
itemToCreate.MonitoringMode = MonitoringMode.Reporting_2;
itemToCreate.RequestedParameters = new MonitoringParameters();
itemToCreate.RequestedParameters.ClientHandle = ++m_monitoredItemCount;
itemToCreate.RequestedParameters.SamplingInterval = 1000;
itemToCreate.RequestedParameters.QueueSize = 0;
itemToCreate.RequestedParameters.DiscardOldest = true;
itemToCreate.RequestedParameters.Filter = new ExtensionObject();
itemsToCreate.Add(itemToCreate);
ListOfMonitoredItemCreateResult results;
ListOfDiagnosticInfo diagnosticInfos;
m_client.CreateMonitoredItems(
m_client.CreateRequestHeader(),
m_subscriptionId,
TimestampsToReturn.Both_2,
itemsToCreate,
out results,
out diagnosticInfos);
if (results != null)
{
// update the list view.
MonitoredItemCreateResult result = results[0];
ListViewItem item = new ListViewItem(itemToCreate.RequestedParameters.ClientHandle.ToString());
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[1].Text = node.DisplayName.Text;
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[2].Text = "<Unknown>";
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[3].Text = String.Format("{0}", result.StatusCode);
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[4].Text = String.Format("{0:HH:mm:ss}", DateTime.Now);
UpdatesLV.Items.Add(item);
// save the monitored item.
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.MonitoredItemId = result.MonitoredItemId;
monitoredItem.ItemToMonitor = itemToCreate.ItemToMonitor;
monitoredItem.MonitoringMode = itemToCreate.MonitoringMode;
monitoredItem.Parameters = itemToCreate.RequestedParameters;
monitoredItem.Parameters.SamplingInterval = result.RevisedSamplingInterval;
monitoredItem.Parameters.QueueSize = result.RevisedQueueSize;
m_monitoredItems.Add(itemToCreate.RequestedParameters.ClientHandle, monitoredItem);
item.Tag = monitoredItem;
}
}
/// <summary>
/// Starts monitoring the value of the currently selected item.
/// </summary>
public void CreateMonitoredItem(ReferenceDescription node)
{
ListOfMonitoredItemCreateRequest itemsToCreate = new ListOfMonitoredItemCreateRequest();
MonitoredItemCreateRequest itemToCreate = new MonitoredItemCreateRequest();
itemToCreate.ItemToMonitor = new ReadValueId();
itemToCreate.ItemToMonitor.NodeId = new NodeId(node.NodeId);
itemToCreate.ItemToMonitor.AttributeId = Attributes.Value;
itemToCreate.MonitoringMode = MonitoringMode.Reporting_2;
itemToCreate.RequestedParameters = new MonitoringParameters();
itemToCreate.RequestedParameters.ClientHandle = ++m_monitoredItemCount;
itemToCreate.RequestedParameters.SamplingInterval = 1000;
itemToCreate.RequestedParameters.QueueSize = 0;
itemToCreate.RequestedParameters.DiscardOldest = true;
itemToCreate.RequestedParameters.Filter = new ExtensionObject();
itemsToCreate.Add(itemToCreate);
ListOfMonitoredItemCreateResult results;
ListOfDiagnosticInfo diagnosticInfos;
m_client.CreateMonitoredItems(
m_client.CreateRequestHeader(),
m_subscriptionId,
TimestampsToReturn.Both_2,
itemsToCreate,
out results,
out diagnosticInfos);
if (results != null)
{
// update the list view.
MonitoredItemCreateResult result = results[0];
ListViewItem item = new ListViewItem(itemToCreate.RequestedParameters.ClientHandle.ToString());
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[1].Text = node.DisplayName.Text;
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[2].Text = "<Unknown>";
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[3].Text = String.Format("{0}", result.StatusCode);
item.SubItems.Add(new ListViewItem.ListViewSubItem());
item.SubItems[4].Text = String.Format("{0:HH:mm:ss}", DateTime.Now);
UpdatesLV.Items.Add(item);
// save the monitored item.
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.MonitoredItemId = result.MonitoredItemId;
monitoredItem.ItemToMonitor = itemToCreate.ItemToMonitor;
monitoredItem.MonitoringMode = itemToCreate.MonitoringMode;
monitoredItem.Parameters = itemToCreate.RequestedParameters;
monitoredItem.Parameters.SamplingInterval = result.RevisedSamplingInterval;
monitoredItem.Parameters.QueueSize = result.RevisedQueueSize;
m_monitoredItems.Add(itemToCreate.RequestedParameters.ClientHandle, monitoredItem);
item.Tag = monitoredItem;
}
}
