I have created a big box. Inside this big box I have two smaller boxes that are connected with an arrow.

Now to my problem. When I tries to select the arrow, the bigger box gets selected. I can select the two smaller boxes with no problem.

I can see the arrow and the two boxes inside my big box. I seems that the two boxes and the arrow are in front of the big box.

What should I do to select the arrow?

Thanks for the answer.

But I didn't got it to work

I did it like this where _ctrlFlowChart is a FlowChart object:

_ctrlFlowChart.HitTestPriority = HitTestPriority.ZOrder;