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NET Products 15.1 To learn about breaking changes in this version, please refer to the following page: Breaking Changes in 15.1.6 (.NET Product Line) To learn about known issues in this version, please refer to the following page: Known Issues in 15.1.6 (.

fun topics, it’s helpful to examine some of the main concepts that WPF introduces above and beyond what . The topics in this chapter are some of the main culprits responsible for WPF’s notoriously steep learning curve.

By familiarizing yourself with these concepts now, you’ll be able to approach the rest of this book (or any other WPF documentation) with confidence.

Some of this chapter’s concepts are unique to WPF (such as logical and visual trees), but others are just extensions of concepts that should be quite familiar (such as properties).

As you learn about each one, you’ll see how to apply it to a very simple piece of user interface that most programs need—an .

WPF’s classes have a very deep inheritance hierarchy, so it can be hard to get your head wrapped around the significance of various classes and their relationships.

A handful of classes are fundamental to the inner workings of WPF and deserve a quick explanation before we get any further in the book.

Figure 3.1 shows these important classes and their relationships.

fun topics, it's helpful to examine some of the main concepts that WPF introduces above and beyond what . The topics in this chapter are some of the main culprits responsible for WPF's notoriously steep learning curve.

By familiarizing yourself with these concepts now, you'll be able to approach the rest of this book (or any other WPF documentation) with confidence.

Some of this chapter's concepts are brand new (such as logical and visual trees), but others are just extensions of concepts that should be quite familiar (such as properties and events).

As you learn about each one, you'll also see how to apply it to a very simple piece of user interface that most programs need—an Note that a logical tree exists even for WPF user interfaces that aren't created in XAML.