C#/WPF: PropertyChanged for all Properties in ViewModel?

You can indicate all properties have changed by using null or string.Empty for the property name in PropertyChangedEventArgs. This is mentioned in the documentation for PropertyChanged.

One other solution I used to tackle the problem of: first setting the value and then calling the PropertyChangedEventArgs is by adding a Set function in my ViewModelBase which looks like this:

public class ViewModelBase : INotifyPropertyChanged
{
    protected bool Set<T>(ref T backingField, T value, [CallerMemberName] string propertyname = null)
    {
        // Check if the value and backing field are actualy different
        if (EqualityComparer<T>.Default.Equals(backingField, value))
        {
            return false;
        }

        // Setting the backing field and the RaisePropertyChanged
        backingField = value;
        RaisePropertyChanged(propertyname);
        return true;
   }
}

Instead of doing this:

public string Name { 
    get { return PersonEntity.Name; }
    set { PersonEntity.Name = value; RaisePropertyChanged("Name");
} 

You can now achieve the same by doing this:

public string Name { 
    get { return PersonEntity.Name; }
    set { Set(ref PersonEntity.Name,value);
}