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()>
<DefaultValueAttribute("")>
<XmlIgnoreAttribute()>
Public Property Callback As EasyAENotificationEventHandler
'Usage
 
Dim instance As EasyAEEventsSubscriptionArguments
Dim value As EasyAENotificationEventHandler
 
instance.Callback = value
 
value = instance.Callback
[CanBeNull()]
[DefaultValue("")]
[XmlIgnore()]
public EasyAENotificationEventHandler Callback {get; set;}
[CanBeNull()]
[DefaultValue("")]
[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.
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