【单选题】
You use Microsoft Visual Studio 2010 and Microsoft . <br /> NET Framework 4 to create a Windows Presentation Foundation (WPF) application. <br /> You create a WPF window in the application. <br /> You add the following code segment to the application. <br /> public class ViewModel <br /> { <br /> public CollectionView Data { get; set; } <br /> }<br /> public class BusinessObject <br /> { <br /> public string Name { get; set; } <br /> }<br /> The DataContext property of the window is set to an instance of the ViewModel class. <br /> The Data property of the ViewModel instance is initialized with a collection of BusinessObject objects. <br /> You add a TextBox control to the Window. <br /> You need to bind the Text property of the TextBox control to the Name property of the current item of the CollectionView of the DataContext object. <br /> You also need to ensure that when a binding error occurs, the Text property of the TextBox control is set to N/A . <br /> Which binding expressi
A、 { Binding Path=Data/Name, FallbackValue='N/A' }
B、 { Binding Path=Data.Name, FallbackValue='N/A' }
C、 { Binding Path=Data/Name, TargetNullValue='N/A' }
D、 { Binding Path=Data.Name, TargetNullValue='N/A' }
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