edit which data is rendered with google Chart through EditorPart

Question

I am using the GoogleChart API to render some charts . To do this, I am executing a LINQ Query which looks similar to this:

var dataList = from products in entities.Productlist
               select new { products.Name, products.Price, products.piecesInStock, products.ID, 
                           products.category, products.piecesOrdered, products.maxPieces };
Dictionary<string, double> dataValues = new Dictionary<string, double>();
foreach (var item in dataList)
   {
       dataValues.Add(item.Name, (item.piecesInStock / item.maxPieces));
   }

after this, I am calling a custom method which is dealing with the javascript. The idea is to make my life a bit easier by letting me choose which values are displayed (read: item.maxPieces, item.price etc <--- the listcolumns) through the editorpart.

what would be the way to go, to accomplish this?

Kind regards