Dot Net Developer Interview Questions

1,247 dot net developer interview questions shared by candidates

1) What is Encapsulation and Polymorphism 2) Difference between Abstraction and Interface 3) Difference between IQueryable and IEnumerable 4) Explain Extension Methods, Anonymous method, Middleware 5) Write a C# program for reversing of the Whole String. 6) Write a C# program to print index of Array from given Array Of Numbers [2, 7, 11, 15] whose Sum is 9.
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Dot Net Expert

Interviewed at HashedIn by Deloitte

4
Oct 3, 2024

1) What is Encapsulation and Polymorphism 2) Difference between Abstraction and Interface 3) Difference between IQueryable and IEnumerable 4) Explain Extension Methods, Anonymous method, Middleware 5) Write a C# program for reversing of the Whole String. 6) Write a C# program to print index of Array from given Array Of Numbers [2, 7, 11, 15] whose Sum is 9.

From there, interviewers usually dive into: • The architecture you worked on (.NET Core, MVC, Web API, Microservices). • Your specific contributions (not just team effort). • How you handled challenges (debugging, performance optimization, database queries, exception handling, etc.).
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Dot NET Developer

Interviewed at Mphasis

3.4
Sep 9, 2025

From there, interviewers usually dive into: • The architecture you worked on (.NET Core, MVC, Web API, Microservices). • Your specific contributions (not just team effort). • How you handled challenges (debugging, performance optimization, database queries, exception handling, etc.).

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