public Worker()
{
currentStep = NotifyingProperty.Create(() => CurrentStep, () => PropertyChanged);
totalSteps = NotifyingProperty.Create(() => TotalSteps, () => PropertyChanged);
// A PropertyChanged notification will be created for Progress every time
// either the CurrentStep *or* TotalSteps changes.
NotifyingProperty.CreateDependent(
() => Progress,
() => PropertyChanged,
() => CurrentStep,
() => TotalSteps);
}
public NotifyPropertyChanged()
{
currentStep = NotifyingProperty.Create(() => CurrentStep, () => null);
}