The UniqueId property value typically consists of dependency names combined string data that uniquely identifiers the data that is being monitored by a ChangeMonitor instance. The value of the UniqueId property is a string. The value of the string is used to assign the unique ID of the ChangeMonitor instance.
Notes to Implementers:
By overriding the property, you can define a custom implementation for the string value of the property in order to assign it a unique ID.
Notes to Inheritors:
In derived classes, you must set the value of the property in the constructor.