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Top 14 C# Design Patterns Interview Questions and Answers

04/Jan/2021 | 10 minutes to read

Here is a List of essential C# Design Patterns Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these C# Design Patterns questions are explained in a simple and easiest way. These questions will help you to clear your next Job interview.

C# Design Patterns Interview Questions

C# Design Patterns Interview Questions and Answers

These interview questions are targeted for Design Patterns. You must know the answers of these frequently asked Design Patterns questions to clear the interview. C# Programming language is used to show the Design Patterns examples.

1. What is a design pattern?

Design Pattern can be defined as

  • A solution to commonly occurring problem in software design.
  • A solution used by programmers to solve common problems in different situations.
  • Not tied to specific problem, Provides general solutions.
  • Not a ready to use design that can be directly fit into source code.
  • A solution that can be customized to solve a particular problem.

2. What are the different types of Design Pattern?

Design Patterns had categorized into three types based on the problem they solve.

  • Creation Design Patterns
  • Structural Design Patterns
  • Behavioural Design Patterns

3. What is the Bounded Context design pattern?

4. Explain Singleton Design Pattern.

5. Explain How will you implement thread safe singleton design pattern in C#?

6. Explain Factory Pattern.

7. Describe Repository Design Pattern. Have you implemented repository design pattern in C#?

8. What is the difference between Singleton design pattern and Static class in C#?

9. Describe the Dependency Injection (DI) design pattern?

10. What problem design patterns solve?

Design Patterns are the solutions to common occurring general problems. They are not the exact solution of any problem rather you need to customize them. For example, When you want a single instance of any class then you implement singleton design pattern that you can customize as per your need like thread safe implementation.

11. What is component-service design pattern?

12. What is dispose design pattern in C#?

Some General Interview Questions for C# Design Patterns

1. How much will you rate your self in C# Design Patterns?

When you attend an interview, Interviewer may ask you to rate your self in specific Technology like C# Design Patterns, So It's depend on your knowledge and work experience in C# Design Patterns.

2. What challenges did you face while working on C# Design Patterns?

This question may be specific to your technology and completely depends on your past work experience. So you need to just explain the challenges you faced related to C# Design Patterns in your Project.

3. What was your role in last Project related to C# Design Patterns?

It's based on your role and responsibilities assigned to you and what functionality you implemented using C# Design Patterns in your project. This question is generally asked in every interview.

4. How much experience do you have in C# Design Patterns?

Here you can tell about your overall work experience on C# Design Patterns.

5. Have you done any C# Design Patterns Certification or Training?

It's depend on candidate like you have done any C# Design Patterns training or certification. Certifications or trainings are not essential but good to have.


We have covered some frequently asked C# Design Patterns Interview Questions and Answers to help you for your Interview. All these Essential C# Design Patterns Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any C# Design Patterns Interview if you face any difficulty to answer any question please write to us at Our IT Expert team will find the best answer and will update on portal. In case if we find any new C# Design Patterns questions, we will update the same here.

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