Silverlight Validation, Binding, DataForm and DataGrid Lab

Open the file "Generic.xaml" located in the "Themes" folder. Look for the TextBox which is bound to the "Group" property. We would like to set the value of this property to "General" for all new employees. To do that we will use the new Binding feature in Silverlight 4: TargetNullValue. Replace the binding XAML in the TextBox with the following ... ................
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