Visual Studio 2015 preview and XAML user interface debugging

One of the great new features in Visual Studio 2015 preview version is the support for user interface (UI) debugging in XAML applications. Running your application live from Visual Studio, you can get a live tree displaying the structure of your UIs, and also the ability edit properties on the fly. These two new features are called Live Visual Tree and Live Property Explorer. These features became available in CTP6.

In addition, there's a feature called "In-App Selection", which allows you to use your mouse to select UI elements from a running application, and then the Live Tree is shown with the selected element. This is much like the F12 tools in browsers for selecting elements on the HTML page.

At this point, these tools are available for WPF applications, but in the future they are planned to be available for Windows Store applications.