Contains information gathered about OPC nodes (areas or sources in OPC event server's area space).
Syntax
'Declaration
<ElementsNotNullAttribute()>
<NotNullAttribute()>
Public ReadOnly Property NodeElements As AENodeElement()
'Usage
Dim instance As AEAreaOrSourceDialog
Dim value() As AENodeElement
instance.NodeElements = value
value = instance.NodeElements
Example
.NET
// This example shows how to let the user browse for OPC Alarms&Events areas or sources.
using System.Linq;
using System.Windows.Forms;
using OpcLabs.EasyOpc.AlarmsAndEvents.Forms.Browsing;
namespace FormsDocExamples._AEAreaOrSourceDialog
{
static class ShowDialog
{
public static void Main1(IWin32Window owner)
{
var areaOrSourceDialog = new AEAreaOrSourceDialog
{
ServerDescriptor = {ServerClass = "OPCLabs.KitEventServer.2"}
};
DialogResult dialogResult = areaOrSourceDialog.ShowDialog(owner);
if (dialogResult != DialogResult.OK)
return;
// Display results
string nodeElementsString = string.Join("\n", areaOrSourceDialog.NodeElements.Select(element => element));
MessageBox.Show(owner, nodeElementsString);
}
}
}
# This example shows how to let the user browse for OPC Alarms&Events areas or sources.
# The QuickOPC package is needed. Install it using "pip install opclabs_quickopc".
import opclabs_quickopc
# Import .NET namespaces.
from System.Windows.Forms import *
from OpcLabs.EasyOpc.AlarmsAndEvents.Forms.Browsing import *
areaOrSourceDialog = AEAreaOrSourceDialog()
areaOrSourceDialog.ServerDescriptor.ServerClass = "OPCLabs.KitEventServer.2"
dialogResult = areaOrSourceDialog.ShowDialog()
print(dialogResult)
if dialogResult != DialogResult.OK:
exit()
# Display results.
print()
for nodeElement in areaOrSourceDialog.NodeElements:
print(nodeElement)
Requirements
Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows
See Also
