无法将任何控件设置为在C＃Winforms中透明

Question

EDIT: I tested this with other controls, and they all seem to be unable to have transparency. I am using .net framework 4.5.2 When I set the .BackColor property of any control to Color.Transparent, they all show up as the same color as the background but I cannot see any controls under them. For example, I cannot make PictureBox transparent.

I've been trying everything to make a chart transparent (so I can see controls under it)

This is for System.Windows.Forms.DataVisualization.Charting .

I tried setting both the background and the foreground and the chart areas background and secondary background to transparent, but the chart is still the same color as the windows form (grayish-white).

From what I read online, it's sufficient to set the background of the chart and chartArea0 (which is my only chart area)

As such:

Chart chart = new Chart();
chart.BackColor = Color.Transparent;
chart.ChartAreas.Add(new ChartArea("ChartArea1"));
chart.ChartAreas[0].BackColor = Color.Transparent;

Please let me know what I can do to make it transparent.

Answer 1

It seems that WinForms only allow "fake transparency", By this definition, they are drawing the Parent object on the background of the child object.

Therefore, where I wanted to draw one chart on top of another, I needed to do the following:

chart1.Parent = chart2;
chart2.Parent = chart3;