c# - IL: ldfld vs ldflda -

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i'm writing small il-weaving application using mono.cecil, requires me manipulate target assembly on il level.

my question quite simple, still find matter confusing. what practical difference between ldfld , ldflda instructions?

i have consulted msdn, , appears while ldfld fetches value of field, ldflda gets address of field. okay... mean? first thought former used value types (and string), , latter reference types, have compiled c# snippet , checked in reflector, , proved me wrong.

i haven't been able find distinct pattern in when c# compiler emits ldflda instead of ldfld, , searches didn't reveal articles explain this. when use ldflda instead of ldfld?

any appreciated.

i guess used structures:

struct counter {    public int i; }  struct {    public counter c; }  s; s.c.i++;

i pretty sure c here loaded address otherwise create copy of counter. that's why can't propery.


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