设计师刷新3D [英] Designer Refresh 3D

问题描述

我在XAML中指定了Model3DGroup，带有灯光和一个Model3DGroup子元素。 

基于依赖属性，我定义了"BoxCount"。我在程序上定义的各个位置动态地向Model3DGroup子项添加其他框。 在OnBoxCountChanged处理程序中，我从Model3DGroup中删除任何旧框，
然后生成并添加新框。  

问题在于，当我在设计器中更改BoxCount时，它有时不会清除旧框（因此它会在旧框之上绘制新框）。  ;但是，如果我重建项目，它会清除旧框。 在运行时，
一切似乎都运行良好。

有没有办法在属性更改时强制刷新？  viewport3D.InvalidateVisual（）;不起作用。

解决方案

尝试 UpdateLayout（）：  http://msdn.microsoft.com/en-us/library/system.windows.uielement.updatelayout.aspx

I have a Model3DGroup specified in XAML With lights and one Model3DGroup child element. 

Based on a dependency property I have defined "BoxCount" I dynamically add additional boxes to the Model3DGroup children at various positions I define procedurally.  In the OnBoxCountChanged handler, I remove any old boxes from the Model3DGroup, and then generate and add the new boxes.  

The problem is that when I change the BoxCount in the designer, it sometimes does not clear the old boxes (so it draws the new boxes on top of the old ones).  However, if I do a rebuild of the project, it does clear the old boxes.  At runtime, everything seems to work fine.

Is there a way to force a refresh when the property changes?  viewport3D.InvalidateVisual(); does not work.

解决方案

Try UpdateLayout(): http://msdn.microsoft.com/en-us/library/system.windows.uielement.updatelayout.aspx.

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