If found a solution to a related question here http://stackoverflow.com/questions/3079563/designer-problem-with-compositedataboundcontrol. But I now have the strange behavior that I can edit the template, after setting the datasourcecontrol correctly, and put in label controls and edit the bindings correctly like I would expect. That is great but when I stop editing the template and look in the source view it is empty?
What do I have to do so that my visual editing of the template is not in vain and that the correct generated markup gets inserted in source view?