Question

Sorry for being confused, at C++ I know to return local variable’s reference or pointers can cause bad_reference exception. I am not sure how it is in C# ?

e.g

List<StringBuilder> logs = new List<StringBuilder>();
void function(string log)
{
   StringBuilder sb = new StringBuilder();
   logs.Add(sb);
}

at this function a local object is created and stored in a list, is that bad or must be done in another way. I am really sorry for asking this, but I am confused after coding C++ for 2 months.

Thanks.

Answer 1

Your C# code doesn’t return an object reference so it doesn’t match your concern. It is however a problem that doesn’t exist in C#. The CLR doesn’t let you create objects on the stack, only the heap. And the garbage collector makes sure that object references stay valid.