UIElement.OnRenderSizeChanged
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When overridden in a derived class, participates in rendering operations that are directed by the layout system.This method is invoked after layout update, and before rendering, if the element's RenderSize has changed as a result of layout update.
This method has no default implementation.A typical WPF framework-level element uses the override implementation fromFrameworkElement.TheFrameworkElement implementation invalidates theWidth andHeight properties and handles the basics of remaking the layout.OverridingOnRenderSizeChanged at the UIElement level implies that your element implementation is deliberately not using the WPF framework-level implementation, and therefore your element must handle layout logic more directly, typically by writing a replacement layout system.
- UIElement.OnRenderSizeChanged
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