VS 2005

The short version:
   How can I set the enabled state of a button depending on if a
strongly-typed datatable has a DeleteCommand?

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The long version:

I have a windows form with a binding navigator.

There are various strongly-types datatables used throughout the form
attached to controls.

In the navigator RefreshItems event I am setting various buttons enabled
states.  I have a problem with the delete button which I am setting like
this:

navigator.btnDelete.enabled = navigator.bindingSource.AllowRemove

But this always evaluates to TRUE regardless is the underlying bindingsource
datatable has an adapter.DeleteCommand, i.e. its not possible to delete.

So I tried to do the same from a dataview.

Dim dv as DataView = New DataView(myTable)
navigator.btnDelete.enabled = dv.AllowDelete

But this also evaluates to TRUE.

What do I need to test to see if the underlying datatable will allow a
delete?

Rick