C# 如何以编程方式设置附加属性，例如Viewport2DVisual3D.IsVisualHostMaterialProperty

我想知道如何以编程方式设置WPF Dependecy属性Viewport2DVisual3D.IsVisualHostMaterialProperty

在xaml中，我将使用：

<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>

但是如何在代码隐藏中完成呢？

这相当简单

只要给扩散材料起个名字就行了

<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>

或

---

属性

Viewport2DVisual3D.IsVisualHostMaterialProperty

是一个附加属性，可以通过上述方式设置

谢谢，我需要在运行时添加一组Viewport2DVisual3D对象，所以我“翻译”了C中的其他说明，但无法找到如何设置该particoular属性。。。

diffuse.SetValue(Viewport2DVisual3D.IsVisualHostMaterialProperty, true);

Viewport2DVisual3D.SetIsVisualHostMaterial(diffuse, true);