Why can you read an attribute placed on a const using reflection in C#? -


i playing around reflection , accident realized place custom field attribute on const class variable, (using reflection) read class' fields, find const attribute , perform actions. working fine.

i curious why works fine. unless mis-understood how consts work, thought constants "compiled out" , references constant became constant's actual value after compiling. if case, why can reflection still see const values?

all references const compiled away - not const declaration itself. const declarations emitted part of il compiler.

here's example (notice il retains const field).

c#:

class foo {     const int = 0; }

il:

.class private auto ansi beforefieldinit foo     extends [mscorlib]system.object {     .method public hidebysig specialname rtspecialname instance void .ctor() cil managed     {     }       .field private static literal int32 = int32(0)     }

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