The INotifyPropertyChanged interface is one of the mechanisms available to update WPF bindings when a property value changes.
If you work with the Model-View-ViewModel pattern, you probably implement INotifyPropertyChanged in your ViewModel classes.
To help myself create properties with support for INotifyPropertyChanged, I created a couple of simple code snippets with literal replacements for the property name and type.
Click here to download and install the snippets.