![]() Its size is determined by these alignments and it will resize as the panel resizes. Its right and bottom edges are aligned with the edge of the panel. Its left side is aligned with the blue rectangle. The orange rectangle isn't given an explicit size.Its left side is aligned with the red rectangle, and its right side is aligned with the blue rectangle, which determines its width. The green rectangle is given an explicit height of 44.It's placed in the upper left corner of the panel, which is the default position. The red rectangle is given an explicit size of 44x44.Here are a few things to note about the sizing of the rectangles: This XAML shows how to arrange elements in a RelativePanel. This table shows the attached properties you can use to align an element in relation to the panel or other elements. You can use RelativePanel with VisualStateManager and AdaptiveTrigger to rearrange your UI for different window sizes. By default, an element is positioned in the upper left corner of the panel. RelativePanel lets you layout UI elements by specifying where they go in relation to other elements and in relation to the panel. For more info about layout panels and UI performance, see Optimize your XAML layout. Using the built-in border properties reduces the XAML element count, which can improve the UI performance of your app. ![]() Here’s an example of how to set border properties on a Grid. The border properties are BorderBrush, BorderThickness, CornerRadius, and Padding. The RelativePanel, StackPanel, and Grid panels define border properties that let you draw a border around the panel without wrapping them in an additional Border element. įor more info about attached properties, see Attached properties overview. This informs the parent Canvas that the Button should be positioned 50 effective pixels from the left edge of the Canvas. Here is an example of how you can set the Canvas.Left attached property on a Button control in XAML. If you have panels that are nested inside other panels, attached properties on UI elements that specify layout characteristics to a parent are interpreted by the most immediate parent panel only. Attached properties use the syntax AttachedPropertyProvider.PropertyName. Most XAML layout panels use attached properties to let their child elements inform the parent panel about how they should be positioned in the UI. Get the WinUI 2 Gallery app (Microsoft Store)īefore we discuss individual panels, let's go over some common properties that all panels have.If you have the WinUI 2 Gallery app installed, see the RelativePanel, StackPanel, Grid, VariableSizedWrapGrid, and Canvas in action. The number and complexity of nested panel elements needed to create your desired layout.How overlapping child elements are layered on top of each other (z-order).How the panel sizes its child elements.How the panel positions its child elements.There are several things to consider when choosing a layout panel: ![]() Here, we describe each panel and show how to use it to layout XAML UI elements. The built-in XAML layout panels include RelativePanel, StackPanel, Grid, VariableSizedWrapGrid, and Canvas. Layout panels are containers that allow you to arrange and group UI elements in your app.
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