OPC Studio User's Guide and Reference
NodeDescriptor Property (AEAreaOrSourceDialog)



OpcLabs.EasyOpcForms Assembly > OpcLabs.EasyOpc.AlarmsAndEvents.Forms.Browsing Namespace > AEAreaOrSourceDialog Class : NodeDescriptor Property
Contains information necessary to identify an OPC Alarms&Events node (area or source), such as its QualifiedName.
Syntax
'Declaration
 
<BrowsableAttribute(False)>
Public Property NodeDescriptor As AENodeDescriptor
'Usage
 
Dim instance As AEAreaOrSourceDialog
Dim value As AENodeDescriptor
 
instance.NodeDescriptor = value
 
value = instance.NodeDescriptor
[Browsable(false)]
public AENodeDescriptor NodeDescriptor {get; set;}
[Browsable(false)]
public:
property AENodeDescriptor^ NodeDescriptor {
   AENodeDescriptor^ get();
   void set (    AENodeDescriptor^ value);
}

Property Value

The value of this property cannot be null (Nothing in Visual Basic).

Remarks

Because the OpcLabs.EasyOpc.AlarmsAndEvents.AENodeDescriptor has an implicit conversion from System.String and OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.AENodeElement, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the qualified name of the node), or a OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.AENodeElement object (result from OPC browsing), in place of OpcLabs.EasyOpc.AlarmsAndEvents.AENodeDescriptor value when setting this property, and the corresponding OPC A&E node descriptor will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.AlarmsAndEvents.AENodeDescriptor.FromString or OpcLabs.EasyOpc.AlarmsAndEvents.AENodeDescriptor.FromAENodeElement static method instead.

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