Hi William

In the visual editor die DataSource property of the BindingSource
object is set to the type of the object which should be displayed (in
the designer, you select a Type within your project). If you look at
the designer generated code there is something like (let´s take a
class named "Person" as DataSource):

myBindingSource.DataSource = typeof(Person);

--> so the designer is able to display (generate) the right columns for
you and you see them in the designer (in your grid).

When you want to display some data in the grid (eg when a button is
pressed) you do the following:

... buttonXYZ_pressed(...) {

 // load data
 ICollection<Person> persons = LoadPersons(.....);

 // bind it to the BindingSource
 myBindingSource.DataSource = persons.
}

Did I understand your problem right?

hth,
 Chris