Sys.PropertyChangedEventArgs.propertyName Property
Gets the name of the property that changed.
var a = propertyChangedEventArgsVar.propertyName();
Return Value
A string that contains the name of the property that changed.
Remarks
Use the propertyName property to determine the name of the property that changed.
See Also
Concepts
Defining Custom Component Properties and Raising PropertyChanged Events
Reference
Sys.PropertyChangedEventArgs Class