Error(s):

(9:1) A namespace cannot directly contain members such as fields or methods
(13:20) Expected class, delegate, enum, interface, or struct
(15:23) Expected class, delegate, enum, interface, or struct
(16:23) Expected class, delegate, enum, interface, or struct
(17:23) Expected class, delegate, enum, interface, or struct
(18:23) Expected class, delegate, enum, interface, or struct
(20:24) Expected class, delegate, enum, interface, or struct
(21:1) Type or namespace definition, or end-of-file expected