OPC Studio User's Guide and Reference
OnAreDataSubscribedChanged Method



OpcLabs.ServerOpcUA Assembly > OpcLabs.EasyOpc.UA.NodeSpace Namespace > UADataVariable Class : OnAreDataSubscribedChanged Method
The old value of the property.
Called when the value of the AreDataSubscribed property has changed.
Syntax
'Declaration
 

Protected Overridable Sub OnAreDataSubscribedChanged( _
   ByVal oldValue As Boolean _
) 
'Usage
 

Dim instance As UADataVariable
Dim oldValue As Boolean
 
instance.OnAreDataSubscribedChanged(oldValue)
protected virtual void OnAreDataSubscribedChanged( 
   bool oldValue
)
protected:
virtual void OnAreDataSubscribedChanged( 
   bool oldValue
)

Parameters

oldValue
The old value of the property.
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

Reference

UADataVariable Class
UADataVariable Members

 

 

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