A ModelProperty represents a property on an item. ModelProperty objects are associated with an instance of an item, which enables them to have simple Value get/set properties, instead of the more cumbersome GetValue/SetValue mechanism of PropertyDescriptor. A ModelProperty’s value may come from a locally set value, or it may be inherited from somewhere higher up in the property mechanism. Because all items in the tree contain Source properties, you can easily determine the real source of a property value by using the following code:

Console.WriteLine(property.Value.Source); 

Value returns nullNothingnullptra null reference (Nothing in Visual Basic) if the property is not set anywhere in the hierarchy. Type converters and editors defined on the underlying data model are wrapped so that they accept ModelItem objects as parameters.

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