Connectivity Software User's Guide and Reference
ToStringPublisherId Method (UAPublisherId)



OpcLabs.EasyOpcUAPrimitives Assembly > OpcLabs.EasyOpc.UA.PubSub Namespace > UAPublisherId Class : ToStringPublisherId Method
Converts the publisher Id to a string-type publisher Id.
Syntax
'Declaration
 
Public Function ToStringPublisherId() As UAPublisherId
'Usage
 
Dim instance As UAPublisherId
Dim value As UAPublisherId
 
value = instance.ToStringPublisherId()
public UAPublisherId ToStringPublisherId()
public:
UAPublisherId^ ToStringPublisherId(); 

Return Value

Returns a publisher Id with string-type identifier. If the current publisher Id is already null or of string type, returns the current instance. Otherwise, returns a new publisher Id with the numeric value converted to a string identifier.

Because the UASubscribeDataSetFilter has an implicit conversion from UAPublisherId, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UAPublisherId (containing the publisher Id that you want to allow in the filter) in any place where UASubscribeDataSetFilter is expected as input, and the corresponding OPC UA subscribe dataset filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UASubscribeDataSetFilter.FromUAPublisherId static method instead.

This method never returns null (Nothing in Visual Basic).

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