Code generation for properties in a UserControl

[steve.kaye]

I'm writing a control which contains a collection of Column objects
which needs to be written to InitializeCompo nent() by the designer.
I've created a collection object (ColumnCollecti on) derived from
CollectionBase which contains Column objects. The Column object has
the TypeConverter attribute and the TypeConverter class implements
CanConvertTo() and ConvertTo() for type InstanceDescrip tor. It does
work but there are a few problems that I have.

Firstly, I have a problem where the designer fails to write the
collection when I go to save it. This seems to occur randomly but
could be more frequent if I am actually working on the Column object
itself. It happens quite frequently for me and much less frequently
for the users of my control. The error given to me by the designer is
: "Code generation for property 'Columns' failed. Error was: 'Unable
to cast object of type 'EditColumn' to type 'EditColumn'.'" As you can
see it's trying to cast an object to the type that it already is.

Secondly, I have released this grid for people to use and I now want to
change the Column object to add more properties which need to be
written too. Is there some way to do this and allow the code that has
already been written to work.

Thanks for any help

steve.kaye