C# 8 and .NET Core 3 Projects Using Azure - Second Edition

OnPropertyChanged

XAML works by rerendering the screen when it is necessary to do so. In the case of WPF and UWP, this means that we need to tell it that something has changed, and we do that by implementing a method on the INotifyPropertyChanged interface called OnPropertyChanged:

public void OnPropertyChanged([CallerMemberName] string propertyName = null){    this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));}

When this is called, it rerenders the aspect of the screen that is bound to whatever property is passed in.

CallerMemberName was introduced back in .NET 4.5 and it allows you to reference the name of the caller without explicitly defining it at design time. That is, if we change the name of one of the properties, ...