'Declaration
<NotNullAttribute()> Public Overloads Shared Function Attribute( _ ByVal typeId As UANodeDescriptor, _ ByVal relativeBrowsePathString As String _ ) As UAAttributeOperand
'Usage
Dim typeId As UANodeDescriptor Dim relativeBrowsePathString As String Dim value As UAAttributeOperand value = UAFilterElements.Attribute(typeId, relativeBrowsePathString)
[NotNull()] public static UAAttributeOperand Attribute( UANodeDescriptor typeId, string relativeBrowsePathString )
[NotNull()] public: static UAAttributeOperand^ Attribute( UANodeDescriptor^ typeId, String^ relativeBrowsePathString )
Parameters
- typeId
- Contains OPC node identifier (descriptor) of the type.
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 this parameter, 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.
If you are using OPC Wizard (for server development), an implicit conversion from OpcLabs.EasyOpc.UA.NodeSpace.UAServerNode can be used in the same way to simply pass the server node in place of this parameter, which will use its OpcLabs.EasyOpc.UA.NodeSpace.UAServerNode.EffectiveNodeDescriptor property for the operation.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - relativeBrowsePathString
- Relative browse path string.
The value of this parameter cannot be
null
(Nothing
in Visual Basic).
Return Value
This method never returns null
(Nothing
in Visual Basic).