c# - Calling Add on List in ExpandoObject throws RuntimeBinderException -


i let visual studio break on clr exceptions. facing weird; following does work, throws exception seems caught internally in .net:

dynamic obj = new expandoobject();  obj.list = new list<object>(); obj.list.add(new { }); // throws runtimebinderexception

exceptions mean bad happened. there wrong code? or weird little implementation detail can ignored?


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