OPC Studio User's Guide and Reference
Implicit Type Conversion Operator (UAEventFilter)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > UAEventFilter Class : Implicit Type Conversion Operator
The select clauses.

The value of this parameter can be null (Nothing in Visual Basic).

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

Converts an attribute field collection to an event filter, by creating a filter with given Select clauses, and no Where clause.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Public Operator Widening CType( _
   ByVal selectClauses As UAAttributeFieldCollection _
) As UAEventFilter
'Usage
 
[CanBeNull()]
public UAEventFilter operator implicit( 
   UAAttributeFieldCollection selectClauses
)
[CanBeNull()]
public:
operator UAEventFilter^ ( 
   UAAttributeFieldCollection^ selectClauses
)

Parameters

selectClauses
The select clauses.

The value of this parameter can be null (Nothing in Visual Basic).

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

Return Value

This method can return null (Nothing in Visual Basic).

Remarks

This operator is equivalent to FromUAAttributeFieldCollection.

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