OPC Studio User's Guide and Reference
UAEventFilterBuilder Constructor(UAAttributeField[])



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > UAEventFilterBuilder Class > UAEventFilterBuilder Constructor : UAEventFilterBuilder Constructor(UAAttributeField[])
The select clauses.

Because the UAAttributeField has an implicit conversion from OpcLabs.EasyOpc.UA.Filtering.UASimpleAttributeOperand, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a OpcLabs.EasyOpc.UA.Filtering.UASimpleAttributeOperand in place of this parameter, and the corresponding OPC UA attribute field will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUASimpleAttributeOperand static method instead.

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

The individual elements of the parameter value cannot be null (Nothing in Visual Basic).

Initializes a new instance of the class, specifying the array of Select clauses.
Syntax
'Declaration
 
Public Function New( _
   ByVal ParamArray selectClauseArray() As UAAttributeField _
)
'Usage
 
Dim selectClauseArray() As UAAttributeField
 
Dim instance As New UAEventFilterBuilder(selectClauseArray)
public UAEventFilterBuilder( 
   params UAAttributeField[] selectClauseArray
)
public:
UAEventFilterBuilder( 
   ... array<UAAttributeField^>^ selectClauseArray
)

Parameters

selectClauseArray
The select clauses.

Because the UAAttributeField has an implicit conversion from OpcLabs.EasyOpc.UA.Filtering.UASimpleAttributeOperand, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a OpcLabs.EasyOpc.UA.Filtering.UASimpleAttributeOperand in place of this parameter, and the corresponding OPC UA attribute field will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUASimpleAttributeOperand static method instead.

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

The individual elements of the parameter value 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