Add a "<Add New Item>" to a databound combobox control

[zachattack05]

Not sure how to do this one...

I have a combobox that is bound to a datasource and I would like to add a entry to the tail end of the combobox that says "<Add New Item>" which, when clicked opens a wizard that will allow the user to add a new record to the underlying datasource.

I attached an image of what I'm talking about.

When I try to edit the Items property, I get an error saying "Cannot modify the Items collection when the DataSource property is set."

Unfortunately adding the "<Add New Item>" to the underlying datasource isn't really an option.

The other issue is, of course, that because it is in a databound object, when the underlying data source is updated, the text "<Add New Item>" should not be inserted into the underlying datasource.

Any suggestions would be welcome.

[Momerath]

Pull the datasource into some collection (List<T> comes to mind) and add your item then bind the list to the control.

[zachattack05]

Not a bad idea!
I'll give that a go!