Vista - XAML and binding to datatables (ADO.net)

I have found out how to do simple bindings to datatables by programatically
assigning the datatable to the DataContext property of an appropriate XAML
element.

I am using a listview to show this (master) table by setting
ItemsSource="{Binding}" and it is obviously sorted according to the table's
default view's sort property.

I am also able to show a child table in another listview by setting
ItemsSource="{Binding Path=FK_ChildTable_MasterTable}"
However, this list is not sorted according to the child table's default
view's sort property.
Anyone knows how to solve this ?

I also need to show some fields from the master table's master table (and
actually this table's master table as well),
I tried with (using a TextBlock element) <TextBlock Text="{Binding
Path=FK_MasterTable_MastersMasterTable/Name}"..., but the syntax is
obviously not correct.
I solved the problem in a way by adding calculated columns to the master
table with expressions similar to:
"myDataSet.MasterTable.Columns.Add("MastersMasterName", typeof(string),
"Parent(FK_MasterTable_MastersMasterTable).Name"
This works, but may potensially accumulate a lot of fields "down in the
hierarchy" and I think there must be a better way.
Anyone knows how ?

try: Path=FK_ChildTable_MasterTable.DefaultView

There's some automatic binding of a table via its default view, but it may
not work once you start redirecting to children, meaning you'd have to
explicitly reference the .DefaultView property

Oh, yeah, and check the Output window. If a binding error won't throw an
exception, it'll show up in the Output console