I'm trying to create a custom edit interface for a specific block type in EPi7.

I need to create a "+" button which brings up a modal popup where you can add name/value pairs and then save them in the episerver database. I know I can extend the user interface with DOJO.

What kind of property can I use to save name/value paris, like a dictionary, to the database? Will it work with a regular dictionary, like this:

publicvirtualDictionary<string,string>CategoryItems{get;set;}

straight into the block type?

Any recommendations on how to do this?