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



OpcLabs.EasyOpcUAPrimitives Assembly > OpcLabs.EasyOpc.UA.PubSub.ComTypes Namespace > _UAPublisherId Interface : ToStringPublisherId Method
Converts the publisher Id to a string-type publisher Id.
Syntax
'Declaration
 
<JetBrains.Annotations.NotNullAttribute()>
Function ToStringPublisherId() As UAPublisherId
'Usage
 
Dim instance As _UAPublisherId
Dim value As UAPublisherId
 
value = instance.ToStringPublisherId()
[JetBrains.Annotations.NotNull()]
UAPublisherId ToStringPublisherId()
[JetBrains.Annotations.NotNull()]
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 OpcLabs.EasyOpc.UA.PubSub.UASubscribeDataSetFilter has an implicit conversion from OpcLabs.EasyOpc.UA.PubSub.UAPublisherId, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned OpcLabs.EasyOpc.UA.PubSub.UAPublisherId (containing the publisher Id that you want to allow in the filter) in any place where OpcLabs.EasyOpc.UA.PubSub.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 FromUAPublisherId static method instead.

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

Remarks

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

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