I have a TextBox with a binding to a property of an object (as shown in XAML below):

Text="{Binding Path=EmpFirst}"

In my C# code, I need to be able to determine what the Binding Path is for any given TextBox. In other words, I want to be able to refer to this TextBox, in my C# code-behind and retrieve 'EmpFirst' as the Binding Path.

Does any body know how to do this?