How to display related object properties in an ASP.Net GridView/DetailsView control

I've just spent the last couple of days reading the Concepts document and looking at some tutorials.

I still can't find anything which shows how to easily display related object properties in an ASP.Net GridView/DetailsView control. I mean, for example, where you retrieve a list of orders from the Orders table - you have foreign key fields in the table, such as CustomerId and EmployeeId. Those are meaningless, and naturally you want to display the Customer name, or the Employee.Fullname field rather than the Id column. 

Is there an easy way to do this? Do I have to create a custom property in the Order object, which shows the desired data? Even better would be to use something like "Bind('Order.Customer.Fullname')" in the declarative code for the GridView. I have no idea.

Could you throw some light on the subject? Is there a Funhouse Web ASP.Net application?