INotifyPropertyChanged

Test.cs

class Test : INotifyPropertyChanged
{
	private string foo;

	public string Foo
	{
		get
		{
			return foo;
		}
		set
		{
			foo = value;
			NotifyPropertyChanged();
		}
	}

	public event PropertyChangedEventHandler PropertyChanged;

	private void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
	{
		OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
	}

	protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
	{
		if (PropertyChanged != null)
		{
			PropertyChanged(this, e);
		}
	}
}