UML class drawer tool in VC#.

I'm implementing a small custom UML class drawer tool in VC#. i use tableLayoutPanle and a class being inherited from UserContol. I add all class attributes and relationships specifications in this class. my tool thoroughly show UML class and relationship. Here my teacher want to make it an editable file. i mean save these specification as a file, re-open it later and make some editing specification and adding new attribute or . Here i get a problem that i don't know how to make this editable file.

some advise me - save these class specification in any access file or SQL server and reuse them. but i don't like this. I want to make a file like any other UML diagram file, Visio or Rational Rose. User can choose any file that he wants to modify. However, i don't know how to implement ...

pls help me. I will demonstrate this to my teacher on this coming Monday.

Thanks

Post moved to its own thread (it didn't belong where it was posted).

- Brad!