Crainiate Community

My suggestion here is to serialise the entire model after every action using a stream. This is the only way to implement your own undo/redo system without access to the source code. This can be done by calling Diagram.Save/Load with a stream (you can used a compressed stream in .net 2.0) You can use...

If afraid this is a limitation of the undo/redo system in version 4.0. It cannot seperate undo/redo tasks by "command' only at the "element" level. This is something we will address in version 5.0. You could write your own undo/redo system by serialising the model after each command...