c# - Get notified when static property changes in wpf

Question

Here microsoft described that in wpf 4.5 we can use INotifypropertyChanged for static properties as well. So I tried to do that.

Here is the code:

public static event PropertyChangedEventHandler StaticPropertyChanged;
    protected static void OnStaticPropertyChanged(string PropertyName)
    {
        PropertyChangedEventHandler handler = StaticPropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(PropertyName));
        }
    }

But I dont know what to use instead of this keyword in the above code?

Here is my code:

public static event PropertyChangedEventHandler StaticPropertyChanged;
protected static void OnStaticPropertyChanged(string PropertyName)
{
    PropertyChangedEventHandler handler = StaticPropertyChanged;
    if (handler != null)
    {
        handler(typeof(MainWindowViewModel), new PropertyChangedEventArgs(PropertyName));
    }
}

private static Haemogram _cHaemogram;
public static Haemogram cHaemogram
{
    get
    {
        return _cHaemogram;
    }
    set
    {
        _cHaemogram = value;
        OnStaticPropertyChanged("cHaemogram");
    }
}

Answer 1

Unless anything uses the sender parameter, it won't matter. Logically it would make sense to use the type:

handler(typeof(TypeDeclaringEvent), new PropertyChangedEventArgs(PropertyName));

EDIT: Note that in the document you referred to, it states:

The static event can use either of the following signatures.

   public static event EventHandler MyPropertyChanged;
   public static event EventHandler<PropertyChangedEventArgs> StaticPropertyChanged;

Your event doesn't comply with these, which could be an issue.