DataContractJsonSerializer не поддерживает элементы данных типа "<var>Type Name</var>". Вместо этого можно использовать тип int, System.Object или определение конкретного перечисляемого типа.

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DataContractJsonSerializer does not support data members of type '<var>Type Name</var>'. Consider using int, System.Object, or a concrete enum definition instead.

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