How can I generate a 'flow' arrow from one control to another in a windows form application?

I have a windows forms application where the user can generate a bunch of user controls that get displayed in a panel. These controls can be dragged around by the user. That is going great. Now I want the user to be able to link the controls together somehow. Ideally it would be an arrow that goes from one control to another (like in this image: http://www.cocoontech.com/w/ima开发者_开发技巧ges/8/82/Premise_ObjectDiagram.png), but I am willing to try other things. I would love to find some kind of tutorial on doing something like this.

if all controls are inside a panel then override the panel's Paint event and draw the arrows

This discussion might help you - MusiGenesis's answer seems close to what you want