C# Interview Questions — a practical guide to C# interview questions with clear examples you can reuse in real projects.
C# Tutorial Series (119/121). Prefer one article? Read the complete C# tutorial.
Short description
Be ready for value vs reference, async/await, DI, LINQ, and boxing.
Sample Q&A
Q: Interface vs abstract class?
A: Interfaces = contracts (multi); abstract class = shared base + optional impl.
Q: async void?
A: Avoid except event handlers.
Q: IEnumerable vs IQueryable?
A: In-memory vs provider query translation (e.g. EF).