<RootClass xmlns="clr-namespace:XamarinBug2927;assembly=System.Xaml_test_net_4_0" > <RootClass.Child> <MyChildClass> <MyChildClass.Descendant> <DescendantClass Value='x' DoWork='HandleMyEvent' /> </MyChildClass.Descendant> </MyChildClass> </RootClass.Child> </RootClass>