c# - The type 'X' does not exist in the type 'Y.Z' -


our team has migrated visual studio 2008/.net3.5 visual studio 2010/.net4.0. now, vs2010 gives me strange error message. it's reproducible following program:

using system;  namespace some.main { }  namespace somelib {     interface     {     } }  namespace consoleapplication1 {     using some.main;     using somelib;      class program     {         static void main(string[] args)         {             console.write("press enter continue");             console.readline();         }     } }

this worked fine in vs2008, in vs2010 following error message:

the type name 'main' not exist in type 'somelib.some'

interestingly, if hit 'build solution', program builds fine, , can execute without problems. it's visual studio seems have problem code.

unfortunately, i'm working on large-ish legacy application , cannot (easily) change names of these namespaces.

i'd know how can fix error, , i'm curious causes it.

you make editor confused. some both namespace , interface name, evidently doesn't check/parse usings in order they're declared.

if want make clear you're referring namespace , not type name add global:: using declaration (to start root namespace), this:

using global::some.main;

update
very post here on linked @alex in comment: should 'using' statements inside or outside namespace?


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