OPC Studio User's Guide and Reference
Equality Operator (UAEventFilter)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > UAEventFilter Class : Equality Operator
First object to be compared.

Because the UAEventFilter has an implicit conversion from UAAttributeFieldCollection, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an OPC UA attribute field collection (representing the Select clauses of the event filter) in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUAAttributeFieldCollection static method instead.

Also, because the UAEventFilterBuilder has an implicit conversion to UAEventFilter, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAEventFilterBuilder in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can convert a UAEventFilterBuilder to UAEventFilter using the UAEventFilterBuilder.ToUAEventFilter static method instead.

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

Second object to be compared.

Because the UAEventFilter has an implicit conversion from UAAttributeFieldCollection, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an OPC UA attribute field collection (representing the Select clauses of the event filter) in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUAAttributeFieldCollection static method instead.

Also, because the UAEventFilterBuilder has an implicit conversion to UAEventFilter, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAEventFilterBuilder in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can convert a UAEventFilterBuilder to UAEventFilter using the UAEventFilterBuilder.ToUAEventFilter static method instead.

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

Determines whether the two objects are equal.
Syntax
'Declaration
 
Public Operator =( _
   ByVal eventFilter1 As UAEventFilter, _
   ByVal eventFilter2 As UAEventFilter _
) As Boolean
'Usage
 

Parameters

eventFilter1
First object to be compared.

Because the UAEventFilter has an implicit conversion from UAAttributeFieldCollection, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an OPC UA attribute field collection (representing the Select clauses of the event filter) in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUAAttributeFieldCollection static method instead.

Also, because the UAEventFilterBuilder has an implicit conversion to UAEventFilter, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAEventFilterBuilder in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can convert a UAEventFilterBuilder to UAEventFilter using the UAEventFilterBuilder.ToUAEventFilter static method instead.

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

eventFilter2
Second object to be compared.

Because the UAEventFilter has an implicit conversion from UAAttributeFieldCollection, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an OPC UA attribute field collection (representing the Select clauses of the event filter) in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromUAAttributeFieldCollection static method instead.

Also, because the UAEventFilterBuilder has an implicit conversion to UAEventFilter, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAEventFilterBuilder in place of this parameter, and the corresponding OPC UA event filter will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can convert a UAEventFilterBuilder to UAEventFilter using the UAEventFilterBuilder.ToUAEventFilter static method instead.

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

Return Value

True if the objects are equal; false otherwise.
Remarks

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

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