c# - Windows Phone - Does not exist in the namespace 'System.Windows' -


i'm developing app windows phone, based on datasnap (delphi).

however, error displayed reference system.windows.threading; :

the type or namespace name 'threading' not exist in namespace 'system.windows' (are missing assembly reference?)

i add windowsbase.dll, not resolved.

not libraries available in .net environment available in wp environment.

use aync , await implementing threading. check intro async , await : asynchronous programming windows phone 8


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