OPC Studio User's Guide and Reference
Trigger Property (UADataChangeFilterAttribute)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.LiveMapping Namespace > UADataChangeFilterAttribute Class : Trigger Property
Specifies the conditions under which a data change notification should be reported.
Syntax
'Declaration
 
Public Property Trigger As UADataChangeTrigger
'Usage
 
Dim instance As UADataChangeFilterAttribute
Dim value As UADataChangeTrigger
 
instance.Trigger = value
 
value = instance.Trigger
public UADataChangeTrigger Trigger {get; set;}
public:
property UADataChangeTrigger Trigger {
   UADataChangeTrigger get();
   void set (    UADataChangeTrigger value);
}

Property Value

Because there is an implicit conversion from OpcLabs.EasyOpc.UA.UADataChangeTrigger to OpcLabs.EasyOpc.UA.UADataChangeFilter, you can simply use the returned OpcLabs.EasyOpc.UA.UADataChangeTrigger in any place where OpcLabs.EasyOpc.UA.UADataChangeFilter is expected as input, and the data change filter will be constructed automatically from the data change trigger. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.UADataChangeFilter.FromUADataChangeTrigger static method instead.

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