You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a ListBox control named lbxItems that is databound to a collection of objects. Each object has a DisplayValue property. You add a Button control to the application. You need to ensure that the Content property of the Button control is databound to the DisplayValue property of the selected item of lbxItems.
Which binding expression should you use?
A.
{ Binding ElementName=lbxItems, Source=SelectedItem, Path=DisplayValue }
B.
{ Binding Source=lbxItems, ElementName=SelectedItem, Path=DisplayValue }
C.
{ Binding ElementName=lbxItems, Path=SelectedItem.DisplayValue }
D.
{ Binding Source=lbxItems, Path=SelectedItem.DisplayValue }