OPC Studio User's Guide and Reference
Explicit Type Conversion(UAQualifiedName,UANodeElement) Operator



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.AddressSpace Namespace > UANodeElement Class > Explicit Type Conversion Operator : Explicit Type Conversion(UAQualifiedName,UANodeElement) Operator
The node element to be converted.

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

Converts a UANodeElement to a qualified name.
Syntax
'Declaration
 
<CanBeNullAttribute()>
<ContractAnnotationAttribute("null => null; notnull => notnull")>
Overloads Public Operator Narrowing CType( _
   ByVal nodeElement As UANodeElement _
) As UAQualifiedName
'Usage
 
[CanBeNull()]
[ContractAnnotation("null => null; notnull => notnull")]
public UAQualifiedName operator explicit( 
   UANodeElement nodeElement
)
[CanBeNull()]
[ContractAnnotation("null => null; notnull => notnull")]
public:
UAQualifiedName^ operator explicit( 
   UANodeElement^ nodeElement
)

Parameters

nodeElement
The node element to be converted.

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

Return Value

For a non-null input, returns the qualified name with expanded text from the browse name of the node element. Returns null if the input is null.

Because the UAQualifiedName has an implicit conversion to System.String, and it converts to the expanded text of the qualified name (UAQualifiedName.ExpandedText), in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UAQualifiedName in any place where expanded text of a qualified name (a string) is expected as input, and the corresponding expanded text will be taken automatically from the qualified name.

Also, because the OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement has an implicit conversion from UAQualifiedName, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UAQualifiedName (containing a target qualified name, which becomes the "any hierarchical" forward reference) in any place where OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement is expected as input, and the corresponding OPC UA browse path element 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.UABrowsePathElement.FromUAQualifiedName static method instead.

Also, because the OpcLabs.EasyOpc.UA.UAReadParameters has an implicit conversions from UAQualifiedName, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply the returned UAQualifiedName (representing the name of the encoding to be used) in any place where OpcLabs.EasyOpc.UA.UAReadParameters is expected as input, and the corresponding OPC UA read parameters will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromDouble or FromUAQualifiedName static method instead.

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

Remarks

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