使用plot cube的Visible属性查看其可见性：

// stores the current state. (You may even use one of the ILPlotCube.Visible flags directly)
bool m_panelState = false;

// give the plot cubes unique tags so we can find them later.
private void ilPanel1_Load(object sender, EventArgs e) {
    ilPanel1.Scene.Add(new ILPlotCube("plotcube1") {
        Plots = {
            Shapes.Circle100, // just some arbitrary content
            new ILLabel("Plot Cube 1")
        },
        // first plot cube starts invisible
        Visible = false
    });
    ilPanel1.Scene.Add(new ILPlotCube("plotcube2") {
        Plots = {
            Shapes.Hemisphere, // just some content
            new ILLabel("Plot Cube 2")
        }
    });
}
// a button is used to switch between the plot cubes
private void button1_Click(object sender, EventArgs e) {
    m_panelState = !m_panelState;
    SetState(); 
}
// both plot cubes are made (un)visible depending on the value of the state variable
private void SetState() {
    ilPanel1.Scene.First<ILPlotCube>("plotcube1").Visible = m_panelState;
    ilPanel1.Scene.First<ILPlotCube>("plotcube2").Visible = !m_panelState;
    ilPanel1.Refresh(); 
}

重要的部分是在面板上调用Refresh()，以便立即显示修改。
请注意，通常情况下，如果您以后可能需要绘制对象，最好将其保留在周围。与其将它们从场景图中删除，然后重新创建类似的对象，将对象设置为Visible = false要快得多，并且不会产生（重新）创建图形对象的相当大的成本。