OPC Studio User's Guide and Reference
Implicit Type Conversion(UANodeDescriptor,UANodeId) Operator



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > UANodeDescriptor Class > Implicit Type Conversion Operator : Implicit Type Conversion(UANodeDescriptor,UANodeId) Operator
The node Id to be converted.

Because the OpcLabs.EasyOpc.UA.AddressSpace.UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.AddressSpace.UANodeId.UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Converts a OpcLabs.EasyOpc.UA.AddressSpace.UANodeId to a node descriptor.
Syntax
'Declaration
 
<CanBeNullAttribute()>
<ContractAnnotationAttribute("null => null; notnull => notnull")>
Overloads Public Operator Widening CType( _
   ByVal nodeId As UANodeId _
) As UANodeDescriptor
'Usage
 
[CanBeNull()]
[ContractAnnotation("null => null; notnull => notnull")]
public UANodeDescriptor operator implicit( 
   UANodeId nodeId
)
[CanBeNull()]
[ContractAnnotation("null => null; notnull => notnull")]
public:
operator UANodeDescriptor^ ( 
   UANodeId^ nodeId
)

Parameters

nodeId
The node Id to be converted.

Because the OpcLabs.EasyOpc.UA.AddressSpace.UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.AddressSpace.UANodeId.UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Return Value

For a non-null input, returns the node descriptor with the given node Id. Returns null if the input is null.

Because there are implicit conversions to OpcLabs.EasyOpc.UA.Navigation.UANamedNodeDescriptor and OpcLabs.EasyOpc.UA.Navigation.UANamedNodePath from UANodeDescriptor, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UANodeDescriptor in any place where OpcLabs.EasyOpc.UA.Navigation.UANamedNodeDescriptor is expected (in this case the UANodeDescriptor contains the final node descriptor) or where OpcLabs.EasyOpc.UA.Navigation.UANamedNodePath is expected (in this case the UANodeDescriptor contains the base and only node in the named node path), and the corresponding OPC UA named node descriptor or named node path will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.Navigation.UANamedNodeDescriptor.FromUANodeDescriptor or OpcLabs.EasyOpc.UA.Navigation.UANamedNodePath.FromUANodeDescriptor static method instead.

This method can return null (Nothing in Visual Basic).

Remarks

This operator is equivalent to FromUANodeId.

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

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