OPC Studio User's Guide and Reference
NodeDescriptors Property (UADataDialog)



OpcLabs.EasyOpcForms Assembly > OpcLabs.EasyOpc.UA.Forms.Browsing Namespace > UADataDialog Class : NodeDescriptors Property
Array of node descriptor objects.
Syntax
'Declaration
 
<NotNullAttribute()>
Public Property NodeDescriptors As UANodeDescriptor()
'Usage
 
Dim instance As UADataDialog
Dim value() As UANodeDescriptor
 
instance.NodeDescriptors = value
 
value = instance.NodeDescriptors
[NotNull()]
public UANodeDescriptor[] NodeDescriptors {get; set;}
[NotNull()]
public:
property array<UANodeDescriptor^>^ NodeDescriptors {
   array<UANodeDescriptor^>^ get();
   void set (    array<UANodeDescriptor^>^ value);
}

Property Value

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

The individual elements of the property value cannot be null (Nothing in Visual Basic).

Remarks

When multi-select is enabled and the dialog allows the user to pick the OPC-UA endpoint, the count of endpoint descriptors must be the same as the count of node descriptors.

The getter method of this property is pure, i.e. it does not have observable side effects.

Because the OpcLabs.EasyOpc.UA.UANodeDescriptor has implicit conversions from OpcLabs.EasyOpc.UA.AddressSpace.UANodeId, OpcLabs.EasyOpc.UA.AddressSpace.UANodeElement, OpcLabs.EasyOpc.UA.Navigation.UABrowsePath and System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a OpcLabs.EasyOpc.UA.AddressSpace.UANodeId object (representing the Id of the OPC UA node), a node element object (from OPC UA browsing), OpcLabs.EasyOpc.UA.Navigation.UABrowsePath object (representing OPC UA absolute browse path), or a string (with expanded node Id text) in place of OpcLabs.EasyOpc.UA.UANodeDescriptor value when setting this property, and the corresponding 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.UA.UANodeDescriptor.FromString, OpcLabs.EasyOpc.UA.UANodeDescriptor.FromUABrowsePath, OpcLabs.EasyOpc.UA.UANodeDescriptor.FromUANodeElement or OpcLabs.EasyOpc.UA.UANodeDescriptor.FromUANodeId 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