Question

If I execute this line I create a string which is a reference.

string mystring = "Hello World"

Is variable mystring in the same context as the object I declare it? And the data "Hello World" on the heap?

Answer 1

Official Answer: it’s an implementation detail and you don’t need to know.

It is of course knowable for a specific (current) version of the framework:

1. if this is inside a method, then mystring is a reference variable, usually on the stack. But when it is captured by a lambda, or when the method is async, or … it is moved to the heap.

2. if this is inside a class, then each instance will contain a mystring reference as a field, stored on the heap.

In both cases there is an anonymous string object on the heap containing "Hello World"