Binding to Nested Properties
Generally, when creating a binding, you'll be binding to a single property on the source object. For example, the DataContext property of a TextBox control might be assigned a Person object, and you might want to bind to the FirstName property on that object, with the FirstName property returning a string:
<TextBox Text="{Binding FirstName, Source={StaticResource personResource}}" />
However, what if the Person object doesn't have a FirstName property but instead has a Name property that returns a PersonName object, and it's this object that has the FirstName property, meaning that you're effectively dealing with nested properties? How do you handle that sort of binding? This is possible by using the same style of dot notation you use in C# code to traverse down the object hierarchy:
<TextBox Text="{Binding Name.FirstName, Source={StaticResource personResource}}" />
You can traverse down multiple levels of the object hierarchy for as far as you need.