Interview Trap: Null Propagation vs NullReferenceException Trap in C# #csharpinterview @dnfvideo
Interview Trap: Null Propagation vs NullReferenceException Trap in C# #csharpinterview @dnfvideo
Uploaded May 2026 | Updated September 2026, 2 weeks ago
One operator in C# looks like it makes null safe — but it does not protect you as much as you think.
The ?. operator is called null propagation, and most developers believe it prevents NullReferenceException everywhere it is used.

That belief is wrong, and it fails in interviews. Let me show you why in this video and how to fix it.

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Interview Trap: Null Propagation vs NullReferenceException Trap in C# #csharpinterview

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