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.
The first snippet (shortcut inpc) provides a barebones implementation of INotifyPropertyChanged:
#region INotifyPropertyChanged support
protected virtual void OnPropertyChanged(string propertyName)
var handler = PropertyChanged;
if (handler != null)
handler(this, new PropertyChangedEventArgs(propertyName));
public event PropertyChangedEventHandler PropertyChanged;
You’d probably want to put the above into a base class to save repetition. You don’t have to use this implementation, but the second snippet calls OnPropertyChanged, so you need a compatible function available.
If you want to add some validation on the propertyName parameter, remember that null and String.Empty are legitimate values.
The second snippet (shortcut propn) implements a property with a backing field and a call to OnPropertyChanged when the value of the property is set:
public int MyProperty
m_MyProperty = value;