wpf 如何以编程方式设置附加属性，例如。Viewport2DVisual3D.IsVisualHostMaterialProperty
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How to set an attached property programmatically eg. Viewport2DVisual3D.IsVisualHostMaterialProperty
提问by Marco
I'd like to know how to programmatically set the WPF Dependecy Property Viewport2DVisual3D.IsVisualHostMaterialProperty .
我想知道如何以编程方式设置 WPF 依赖属性 Viewport2DVisual3D.IsVisualHostMaterialProperty 。
In the xaml I would use:
在 xaml 中，我会使用：
<Viewport2DVisual3D>
<Viewport2DVisual3D.Geometry>
<MeshGeometry3D Positions = "0,0,0 0,-30.9274,0 0,-30.9274,-24.4287 0,0,-24.4287"
TextureCoordinates = "0,0 0,1 1,1 1,0"
TriangleIndices = "0 1 2 0 2 3"/>
</Viewport2DVisual3D.Geometry>
<Viewport2DVisual3D.Material>
<DiffuseMaterial Viewport2DVisual3D.IsVisualHostMaterial="True"/>
</Viewport2DVisual3D.Material>
<Viewport2DVisual3D.Visual>
<Grid>
<Image Source="{StaticResource BG}"/>
</Grid>
</Viewport2DVisual3D.Visual>
</Viewport2DVisual3D>
But how can it be done in code behind?
但是如何在后面的代码中完成呢？
回答by pushpraj
It's fairly simple
这很简单
just give the DiffuseMaterial a name
只需为 DiffuseMaterial 命名
<Viewport2DVisual3D>
<Viewport2DVisual3D.Geometry>
<MeshGeometry3D Positions="0,0,0 0,-30.9274,0 0,-30.9274,-24.4287 0,0,-24.4287"
TextureCoordinates="0,0 0,1 1,1 1,0"
TriangleIndices="0 1 2 0 2 3" />
</Viewport2DVisual3D.Geometry>
<Viewport2DVisual3D.Material>
<DiffuseMaterial x:Name="diffuse" />
</Viewport2DVisual3D.Material>
<Viewport2DVisual3D.Visual>
<Grid>
<Image Source="{StaticResource BG}" />
</Grid>
</Viewport2DVisual3D.Visual>
</Viewport2DVisual3D>
in code
在代码中
set it like this
设置成这样
diffuse.SetValue(Viewport2DVisual3D.IsVisualHostMaterialProperty, true);
or
或者
Viewport2DVisual3D.SetIsVisualHostMaterial(diffuse, true);
the property Viewport2DVisual3D.IsVisualHostMaterialPropertyis an attached property which can be set in the above mentioned ways
该属性Viewport2DVisual3D.IsVisualHostMaterialProperty是一个附加属性，可以通过上述方式设置
