How to cast DataTableReader to NpgSqlDataReader

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C#3.5

serialization

DataReader

, +

I'm trying to cast DataTableReader to NpgSqlDataReader (its an abstract class) with no success. tried inheriting from it but than i cant because it has internal function that could not be override. The final thing im trying to do is move an object of NpgSqlDataReader from one process to another.

Thanks for the help.