我不确定9.7英寸的限制。我记得40英寸的限制与渲染打印区域有关。

我不确定您设计的表单上的图表布局;但是，您可以通过设置
水平和/或垂直锚点属性来减少或消除代码。

I am unsure about the layout of the chart on the form you have designed; however, you may be able to reduce or eliminate the code by setting the Horizontal and/or vertical Anchor properties.