How is PropertyChangedEventHandler used?

Question

How is PropertyChangedEventHandler used? Can you tell me what this bit of code is in the class "Initalization Method"? In the project we are working on, there is a class that has a private initialization method. And there is some code in this method that I want to discuss.
But first let me describe the class. A class is defined as something like this: public class Skoobie: BaseThingy, ISkoobie

So this means that the Skoobie class has two parents from whom it inherits. What are all the consequences of this?

Anyway, the Initalize method looks something like this:

private void Initialize()
{
            this.PropertyChanged += (o, e) =>
                {
                     If (e != null)
                     {
                        // some stuff is done
                     }

                };
}

Now, "PropertyCHanged" is a member of the parent class "BaseThingy", which is defined as follows:

PropertyChangedEventHandler PropertyChanged; this.PropertyChanged + = (o, e) = > ... ? LINQ thingy?

Answer 1

(http://msdn.microsoft.com/en-us/library/bb397687.aspx), PropertyChanged.
INotifyPropertyChanged: http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged.aspx
, WPF/Silverlight. . .

Skoobie: BaseThingy, ISkoobie # . ( ISkoobie - , BaseThingy - )