is it possible

i am trying to access the private member of a class
from outside is it possible.
my friend told to me it's possible.

It is diificult but possible. Basically you will need to use reflection and force the field to be visible. The code looks something like:

Now theField, a member of theClass is, in effect, public.

I'd also add that in almost all circumstances, it's also a bad idea. Reflection can be abused to break encapsulation, which is one of the fundamental principles of good OOP and design.