https://learn.microsoft.com/zh-tw/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.uielement.invalidatearrange?view=windows-app-sdk-1.8
UIElement.InvalidateArrange Method (Microsoft.UI.Xaml) - Windows App SDK | Microsoft Learn
Invalidates the arrange state (layout) for a UIElement. After the invalidation, the UIElement will have its layout updated, which will occur asynchronously.
windows appmethodmicrosoftuixaml