问题
I have FlowLayoutPanel and UserControl's on it with drag & drop reordering. This sort of works. But the problem is that child controls prevent dragging of the actual parent UserControl.
So my question is how to enable dragging of a UserControl that contains child controls?
回答1:
If I understand you right I had the same problem as you and I solved it by propagating events of the child element to it's parent.
If you have a draggable UserControl containing a label. You have to call the events of the UserControl when the events of the label occurs. E.g. in the Label's OnMouseDown() call the UserControl's OnMouseDown() and just pass the Event-Args. I didn't find a better way than handling each event that is required for drag and drop separately.
来源：https://stackoverflow.com/questions/9773860/net-usercontrol-drag-drop-child-controls