OPC Studio User's Guide and Reference
EasyUADataSetSubscriptionChangeArguments Constructor(UASubscribeDataSetFilter)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.PubSub.OperationModel Namespace > EasyUADataSetSubscriptionChangeArguments Class > EasyUADataSetSubscriptionChangeArguments Constructor : EasyUADataSetSubscriptionChangeArguments Constructor(UASubscribeDataSetFilter)
Specifies how the incoming PubSub messages should be filtered before being delivered to the application.

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 a OpcLabs.EasyOpc.UA.PubSub.UAPublisherId (containing the publisher Id that you want to allow in the filter) in place of this parameter, 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.

The value of this parameter cannot be null (Nothing in Visual Basic).

Initializes a new instance of the class, specifying the filter.
Syntax
'Declaration
 
Public Function New( _
   ByVal filter As UASubscribeDataSetFilter _
)
'Usage
 
Dim filter As UASubscribeDataSetFilter
 
Dim instance As New EasyUADataSetSubscriptionChangeArguments(filter)
public EasyUADataSetSubscriptionChangeArguments( 
   UASubscribeDataSetFilter filter
)
public:
EasyUADataSetSubscriptionChangeArguments( 
   UASubscribeDataSetFilter^ filter
)

Parameters

filter
Specifies how the incoming PubSub messages should be filtered before being delivered to the application.

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 a OpcLabs.EasyOpc.UA.PubSub.UAPublisherId (containing the publisher Id that you want to allow in the filter) in place of this parameter, 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.

The value of this parameter cannot be 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