If set to True, notifies the GXDevice, if a value, state, error level or error description of a GXProperty changes. If set to False, the developer has to use NotifyPropertyChange to inform GXDevice about changes. Read and write failures are always notified, even if AutoNotifyPropertyChange is set to False.

CopyC#

' In this example AutoNotifyPropertyChange is set to False and notifications are sent manually.
dim GXProp as GXProperty
set GXProp = GXDevice1.Properties(1)
GXProp.Value = "123"
GXDevice1.NotifyPropertyChange GXProp, GX_PROPERTY_STATE_VALUE_CHANGED

GXPropertyCollection.OnPropertyChanged