Question:What are the benefits of using the ExpandoObject class over a using dictionary? 

A It offers easier data binding from XAML. 
B It's interoperable with dynamic languages, which will be expecting DLR properties rather than dictionary entries. 
C WPF data binding will understand dynamic properties, so WPF controls can bind to an ExpandoObject more readily than a dictionary. 
D ExpandoObject can help in creating complex hierarchical objects. ExpandoObject implements the INotifyPropertyChanged interface, which gives more control over properties than a dictionary. 

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D 

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Mohammad Towhidul Islam

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