How to partially overlay a picturebox over form controls

Question

I want to have an image partially overlaying a winform control (in this case a datagridview) but it seems that's not working as i would. I followed the answer found here and it works fine when the parent is the control (DGV) but not when the parent is the form...
I will like to have something like this:

But instead i get something like this :

Following the answer and setting the parent to DGV works fine....

Answer 1

You can use two PictureBoxes and bring one below the DGV and nest the other. Then move the overlay to the right place.. both should be identical otherwise, i.e. have the same Image and the same SizeMode.

Here is a function that'll do it:

void overlayCtls(Control ctlBase, Control ctlOverlay, Control ctlTgt )
{
    ctlOverlay.BackColor = Color.Transparent;
    ctlOverlay.Parent = ctlTgt;
    ctlOverlay.Location = new Point(ctlBase.Left - ctlTgt.Left, ctlBase.Top - ctlTgt.Top);
}

And the result:

Notes:

• You explictily need to do the nesting as a DGV is not a container, so it will not be enough to move it in place in the designer.
• You explictily need to set the BackColor to Transparent even if it was set in the designer. Looks like it will be taken from the parent unless set in code.
• The nested child control will overlay not only the ClientArea of its Parent but also any Border.