Top 40 C# Interview Questions | 2026

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Basic C# Interview Questions & Answers
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1. What Is C#?
2. List Some Key C# Features.

How do you hide base class methods?

Using the new keyword in the derived class, the base class method can be hidden or suppressed. New implementation can be added to the derived class.

What does the keyword "virtual" mean in the method definition?

Ans: The method can be over-ridden.

How method overriding different from overloading?

Overriding different from Overloading:

If we are overriding the method, derived class method behaviour is changed from the base class. In Overloading, method with same name by different signature is used.

OOP's Interview Question: What is OOP in C#?

Here i am discussing about, "OOP's related inter question's are asked up to fresher level".