OPC Studio User's Guide and Reference
Callback Property (EasyAEEventsSubscriptionArguments)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.AlarmsAndEvents.OperationModel Namespace > EasyAEEventsSubscriptionArguments Class : Callback Property
A callback method to be invoked for each event notification.
Syntax
'Declaration
 
<CanBeNullAttribute()>
<XmlIgnoreAttribute()>
Public Property Callback As EasyAENotificationEventHandler
'Usage
 
Dim instance As EasyAEEventsSubscriptionArguments
Dim value As EasyAENotificationEventHandler
 
instance.Callback = value
 
value = instance.Callback
[CanBeNull()]
[XmlIgnore()]
public EasyAENotificationEventHandler Callback {get; set;}
[CanBeNull()]
[XmlIgnore()]
public:
property EasyAENotificationEventHandler^ Callback {
   EasyAENotificationEventHandler^ get();
   void set (    EasyAENotificationEventHandler^ value);
}

Property Value

If this is a null reference, only the notification events are generated, but no callback method is invoked.

This value of this property can be null (Nothing in Visual Basic).

The default value of this property is null.

Remarks

This method can be called whether this is a refresh or standard event notification.

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