Start the TestXaml application in the Release configuration. Here's an example, using the same WPF test application we used before. When you attach to a running XAML application, you can use the Live Visual Tree on the UI elements of that application too. You can use these XAML tools even when you don't have the source code. The MainWindow.xaml file opens in Visual Studio and the cursor is placed on the line where the button is defined. Select Select element and Track Focused Element, and then you select the button in our test application. This mode shows the XAML where the element was declared, if you have access to the source code of the application. You can enable this mode by selecting this button on the Live Visual Tree toolbar. You should see the text block node in the Live Visual Tree and the text block properties in the Live Property Viewer, as well as the horizontal and vertical lines on the bounds of the text block. For example, turn both Select element and Display layout on, and select the Add Item text block in the application. When Display layout adorners is on, it causes the application window to show horizontal and vertical lines along the bounds of the selected object so you can see what it aligns to, as well as rectangles showing the margins. You can enable this mode when you select the button that is immediately to the right of the Select element. Starting in Visual Studio 2019 version 16.4, you can configure the behavior of element selection.ĭisplay Layout Adorners in the Running Application. With this mode on, you can select a UI element in the application, and the Live Visual Tree (and the Live Property Viewer) automatically updates to show the node in the tree corresponding to that element, and its properties. You can enable this mode when you select this button on the Live Visual Tree toolbar. Select Element in the Running Application. When the window comes up you should see the in-app toolbar appear within your running application. For more information about build configurations, see Understanding Build Configurations.) (The build configuration must be Debug, not Release. Private void button_Click(object sender, RoutedEventArgs e)īuild the project and start debugging. NET version appears in the Target Framework drop-down).Ĭhange MainWindow.xaml to the following: Īdd the following command handler to the file: int count Create the projectĬreate a new C# WPF application ( File > New > Project, type "C# WPF", choose the WPF Application project template, name the project TestXAML, and then verify that the correct. Even-numbered items are colored gray, and odd-numbered items are colored yellow. Every time you click the button, another item is added to the list. Let's get started with a very simple WPF application that has a list view and a button. NET 8 and later, Visual Studio 2022 17.9 and later Windows 10 and later, with the Windows 10 SDK and later Windows Presentation Foundation (4.0 and later) applications You can use these tools in the following configurations: Type of App These tools give you a tree view of the UI elements of your running XAML application, and show you the runtime properties of any UI element you select. You can get a real-time view of your running XAML code with the Live Visual Tree and the Live Property Explorer.
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