private void Notification_MonitoredItem(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
if (this.InvokeRequired)
{
this.BeginInvoke(new MonitoredItemNotificationEventHandler(Notification_MonitoredItem), monitoredItem, e);
return;
}
MonitoredItemNotification notification = e.NotificationValue as MonitoredItemNotification;
if (notification == null)
{
return;
}
//Seach for item in listview
bool foundItem = false;
ListViewItem foundLvItem = new ListViewItem();
foreach (ListViewItem item in SubscriptionListView.Items)
{
if (item.Text == monitoredItem.StartNodeId.ToString())
{
foundItem = true;
foundLvItem = item;
break;
}
}
//Don't allow double display
if (!foundItem)
{
Node node = myHelperApi.ReadNode(monitoredItem.StartNodeId.ToString());
ListViewItem lvItem = new ListViewItem(new[] { monitoredItem.StartNodeId.ToString(), monitoredItem.DisplayName,
monitoredItem.SamplingInterval.ToString(), notification.Value.Value == null ? "(null)" : notification.Value.Value.ToString(), notification.Value.StatusCode.ToString(),
notification.Value.ServerTimestamp.ToString() });
SubscriptionListView.Items.Add(lvItem).Tag = monitoredItem;
}
else
{
foundLvItem.SubItems.Clear();
foundLvItem.Text = monitoredItem.StartNodeId.ToString();
foundLvItem.SubItems.AddRange(new[] { monitoredItem.DisplayName,
monitoredItem.SamplingInterval.ToString(), notification.Value.Value == null ? "(null)" : notification.Value.Value.ToString(), notification.Value.StatusCode.ToString(),
notification.Value.ServerTimestamp.ToString() });
}
}
private void NodeTreeView_BeforeSelect(object sender, TreeViewCancelEventArgs e)
{
descriptionGridView.Rows.Clear();
try
{
ReferenceDescription refDesc = (ReferenceDescription)e.Node.Tag;
Node node = myClientHelperAPI.ReadNode(refDesc.NodeId.ToString());
VariableNode variableNode = new VariableNode();
string[] row1 = new string[] { "Node Id", refDesc.NodeId.ToString() };
string[] row2 = new string[] { "Namespace Index", refDesc.NodeId.NamespaceIndex.ToString() };
string[] row3 = new string[] { "Identifier Type", refDesc.NodeId.IdType.ToString() };
string[] row4 = new string[] { "Identifier", refDesc.NodeId.Identifier.ToString() };
string[] row5 = new string[] { "Browse Name", refDesc.BrowseName.ToString() };
string[] row6 = new string[] { "Display Name", refDesc.DisplayName.ToString() };
string[] row7 = new string[] { "Node Class", refDesc.NodeClass.ToString() };
string[] row8 = new string[] { "Description", "null" };
//try { row8 = new string[] { "Description", node.Description.ToString() }; }
//catch { row8 = new string[] { "Description", "null" }; }
string[] row9 = new string[] { "Type Definition", refDesc.TypeDefinition.ToString() };
string[] row10 = new string[] { "Write Mask", node.WriteMask.ToString() };
string[] row11 = new string[] { "User Write Mask", node.UserWriteMask.ToString() };
if (node.NodeClass == NodeClass.Variable)
{
variableNode = (VariableNode)node.DataLock;
List <NodeId> nodeIds = new List <NodeId>();
List <string> displayNames = new List <string>();
List <ServiceResult> errors = new List <ServiceResult>();
NodeId nodeId = new NodeId(variableNode.DataType);
nodeIds.Add(nodeId);
mySession.ReadDisplayName(nodeIds, out displayNames, out errors);
string[] row12 = new string[] { "Data Type", displayNames[0] };
string[] row13 = new string[] { "Value Rank", variableNode.ValueRank.ToString() };
string[] row14 = new string[] { "Array Dimensions", variableNode.ArrayDimensions.Capacity.ToString() };
string[] row15 = new string[] { "Access Level", variableNode.AccessLevel.ToString() };
string[] row16 = new string[] { "Minimum Sampling Interval", variableNode.MinimumSamplingInterval.ToString() };
string[] row17 = new string[] { "Historizing", variableNode.Historizing.ToString() };
object[] rows = new object[] { row1, row2, row3, row4, row5, row6, row7, row8, row9, row10, row11, row12, row13, row14, row15, row16, row17 };
foreach (string[] rowArray in rows)
{
descriptionGridView.Rows.Add(rowArray);
}
}
else
{
object[] rows = new object[] { row1, row2, row3, row4, row5, row6, row7, row8, row9, row10, row11 };
foreach (string[] rowArray in rows)
{
descriptionGridView.Rows.Add(rowArray);
}
}
descriptionGridView.ClearSelection();
}
catch (Exception ex)
{
if (BGW_OPCUA.IsBusy)
{
BGW_OPCUA.CancelAsync();
}
MessageBox.Show(ex.Message, "Error");
}
}