C#.NET — During the lifetime of a single object, how many times can its constructor run?

Introduction / Context:
A constructor initializes a new object immediately after memory is allocated. The semantics guarantee predictable, one-time setup for that instance.

Given Data / Assumptions:

• An object is created with new, which allocates memory and then calls the constructor.
• We are talking about one specific instance's lifetime.

Concept / Approach:
The constructor executes exactly once per instance, at construction time. You cannot re-run the constructor on an already created object. Re-initialization requires a separate method or creating a new instance.

Step-by-Step Solution:

Verification / Alternative check:
Experiment by trying to call the constructor like an ordinary method on an existing instance; this is not allowed.

Why Other Options Are Wrong:

• A/D/E: Misunderstand life-cycle; constructor is not a repeatable routine on the same object.
• C: No such project setting changes constructor semantics.

Common Pitfalls:
Assuming a constructor can serve as a reset method; write an explicit Reset() if needed.

Final Answer:
Only once.