Value Types, Reference Types, and Boxing

Difficulty: Beginner · 18 min

Copying semantics, boxing and unboxing, equality, nullable value types, and the stack-versus-heap misconceptions interviewers expect candidates to correct.

Prep paths

C# Interview Foundations: Types, LINQ, and ConcurrencyA practical C# interview path covering the type system, object-oriented design, generics, collections, LINQ, resource safety, async workflows, cancellation, and .NET memory management.