Hey,

 I'm new to WPF so I'm probably doing something completely wrong here:

I have a Person class.  I want to bind a list of these to the grid.  This list will be fetched sometime after the form is loaded, based on criteria from the user.  I want to be able to see the columns at design time.

This is what I tried: I put a PersonCollection property in my Window code behind, in my XAML I added DataContext="{Binding RelativeSource={RelativeSource Self}}" in the Window tag to set the window as its own data context, then I added DataSource="{Binding RatingAgencyModelList}"  in the grid tag to set the property as the data source of the grid.  At run time the data is loaded as expected.  However, at design time I don't see any columns.  Am I doing something wrong?

Thanks