OPC Studio User's Guide and Reference
UAEventFilter Constructor(UAAttributeFieldCollection)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > UAEventFilter Class > UAEventFilter Constructor : UAEventFilter Constructor(UAAttributeFieldCollection)
The select clauses.
Initializes a new instance of the class.
Syntax
'Declaration
 
Public Function New( _
   ByVal selectClauses As UAAttributeFieldCollection _
)
'Usage
 
Dim selectClauses As UAAttributeFieldCollection
 
Dim instance As New UAEventFilter(selectClauses)
public UAEventFilter( 
   UAAttributeFieldCollection selectClauses
)
public:
UAEventFilter( 
   UAAttributeFieldCollection^ selectClauses
)

Parameters

selectClauses
The select clauses.
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.

Remarks
The choice of available constructors is intentionally limited. For more flexibility, construct OpcLabs.EasyOpc.UA.Filtering.UAContentFilterElementBuilder, and use its implicit conversion to this object.
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