c# - Simply declaring a function signature from an external DLL does not give a runtime exception if the DLL or function doesn't exist, right? -


for example, if i'm declaring:

internal static class winapi {     [dllimport("dwmapi.dll", preservesig = false)]     internal static extern bool dwmiscompositionenabled(); }

but i'm not calling dwmiscompositionenabled function in project, hope not raise exception when running program on systems dwmapi.dll not exist (or function not exist in dll). (real case: dwmapi.dll requires windows vista, doesn't exist on windows xp).

this problem if , when api called.

you consider thin c# wrapper on p/invoke facilitate handling error, if call multiple places.


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