Connectivity Software User's Guide and Reference
UADataVariableWriteEventArgs Constructor(UAServerOperationContext,UADataVariable,UAAttributeData)



OpcLabs.ServerOpcUA Assembly > OpcLabs.EasyOpc.UA.OperationModel Namespace > UADataVariableWriteEventArgs Class > UADataVariableWriteEventArgs Constructor : UADataVariableWriteEventArgs Constructor(UAServerOperationContext,UADataVariable,UAAttributeData)
The server operation context associated with the write operation.

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

The data variable to which the data is being written.

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

The attribute data (value, status code, and timestamps) to be written.

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

Initializes a new instance of the class, with given server operation context, data variable, and attribute data (value, status code and timestamps).
Syntax
'Declaration
 
Public Function New( _
   ByVal serverOperationContext As UAServerOperationContext, _
   ByVal dataVariable As UADataVariable, _
   ByVal attributeData As UAAttributeData _
)
'Usage
 
Dim serverOperationContext As UAServerOperationContext
Dim dataVariable As UADataVariable
Dim attributeData As UAAttributeData
 
Dim instance As New UADataVariableWriteEventArgs(serverOperationContext, dataVariable, attributeData)

Parameters

serverOperationContext
The server operation context associated with the write operation.

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

dataVariable
The data variable to which the data is being written.

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

attributeData
The attribute data (value, status code, and timestamps) to be written.

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

Exceptions
ExceptionDescription

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

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