What does compile time 'const' mean?

Question

They say the difference between readonly and const is that const is compile-time (while readonly is run time). But what exactly does that mean, The fact that it\'s compile t

Answer 1

One consequence of const being compile time is that changes to the const in one assembly does not get picked up automatically by other assemblies without recompiling them all.

Eg:

1. Assembly A has public const of int = 10
2. Assembly B refers to that const.
3. Both compiled. Now Assembly A const changed to 20, redeployed.
4. Assembly B not recompiled.

At runtime, Assembly B thinks the value of the const is still 10, not 20.

If it were readonly, it would pick up the new value.