OPC Studio User's Guide and Reference
UADataChangeNotificationObservable<TValue> Constructor(EasyUAClientSelector,IAliasProvider,IEnumerable<UAMonitoredItemArguments>)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.Reactive Namespace > UADataChangeNotificationObservable<TValue> Class > UADataChangeNotificationObservable<TValue> Constructor : UADataChangeNotificationObservable<TValue> Constructor(EasyUAClientSelector,IAliasProvider,IEnumerable<UAMonitoredItemArguments>)
The selector of the client object that is used for OPC Unified Architecture operations.

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

The alias provider to be used for resolving aliases by this reactive object.

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

For each OPC monitored item, contains its OPC endpoint and node descriptors, and OPC subscription and monitoring parameters.

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

Syntax
'Declaration
 
Public Function New( _
   ByVal clientSelector As EasyUAClientSelector, _
   ByVal aliasProvider As IAliasProvider, _
   ByVal arguments As IEnumerable(Of UAMonitoredItemArguments) _
)
'Usage
 
Dim clientSelector As EasyUAClientSelector
Dim aliasProvider As IAliasProvider
Dim arguments As IEnumerable(Of UAMonitoredItemArguments)
 
Dim instance As New UADataChangeNotificationObservable(Of TValue)(clientSelector, aliasProvider, arguments)

Parameters

clientSelector
The selector of the client object that is used for OPC Unified Architecture operations.

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

aliasProvider
The alias provider to be used for resolving aliases by this reactive object.

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

arguments
For each OPC monitored item, contains its OPC endpoint and node descriptors, and OPC subscription and monitoring parameters.

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