Example C Sharp interview questions and how to answer them

By Indeed Editorial Team

Published 19 May 2022

The Indeed Editorial Team comprises a diverse and talented team of writers, researchers and subject matter experts equipped with Indeed's data and insights to deliver useful tips to help guide your career journey.

Getting a job as a coder requires a unique set of technical skills. C Sharp is one of the most desired proficiencies of being a coding expert. Having a full understanding of some of the most common C Sharp interview questions is a clear benefit for any applicant. In this article, we examine a range of different C Sharp interview questions and consider ideal answers for succeeding in your job interview process.

C Sharp interview questions

Knowing C Sharp interview questions before walking through the door is a clear advantage for any application. This means that you can prepare in advance, and have some answers to more complicated questions before the interviewer asks them. Learn more of the interview questions recruiters commonly use and find out tips for answering them to the best of your ability.

Remember that not all the questions you receive in an interview specifically pertain to your skills in C#. This is because an employer is hiring you as a person rather than simply your skill set. The below list contains a combination of C# specific questions and more broad questions that are a part of most job interviews:

Tell me about your experience using C#?

At this stage of the process, an interviewer establishes your existing level with the programming language. Whilst the interviewer has some idea of your existing level of experience from your CV, this is an opportunity to deepen their understanding of your previous work. The first reason interviewers ask this question is to establish your honesty. When the story between your CV and your interview corroborates, an interviewer knows that you're honest throughout the rest of the interview.

Asking about your level of experience is a good opportunity for the recruiter to expand the conversation into a wider range of different topics. For example, if you and the recruiter have experience working in the same place, this is a way of starting a conversation. In this section, talking about your work is a good way of building a better personal relationship with the recruiter.

Related: A guide on how to ace an interview (with tips and examples)

What are your weaknesses when coding in C#?

One of the main questions an interviewer may ask about your time with C# is regarding any of the weaknesses you have with the coding language. This is for a couple of reasons. The first is that an employer seeks a member of staff with the right skills for their team, so avoiding weaknesses in areas that the company prioritises is beneficial for your application. The company knows you have the right skills for the workplace without requiring too much training going forwards.

Recruiters ask this question to work out your role in the company. There is a wide range of C# development roles in many companies. Understanding your skills means the employer moves members of staff around, making sure that everyone works in an area they feel comfortable with whilst they learn the relevant skills. Flexible C# workplaces are more effective workplaces, as they achieve their end goals through teamwork and more effective labour allocation.

Related: Coding skills: definitions, examples and how to highlight

Recall a time when you made a mistake in C#. What happened and how did you correct it?

This is another common question for a coding interview and establishes further information about your career and your skill set. Many recruiters ask this question as it provides significant insight into not only your professional work but your problem-solving abilities. The question establishes your technical skills, demonstrating your level of coding ability as you respond to your mistakes.

A recruiter gains further insight into your personality by asking this question. This is because your responses to mistakes present a level of accountability. People willing to take accountability for their own work are ideal for employers, as they understand cases in which there are mistakes and act in a quick and effective way, finding a resolution. This is a valuable personality feature for any company.

Related: Interview Question: Tell Me About A Time You Made A Mistake

Fix this C# code snippet

This is unlike many other C# interview questions, focusing on a more practical aspect of the interview than verbally responding to a question. In this question, the recruiter provides a code snippet for the interviewer. From this point, the interviewer assesses the code, fixing the issues with the code and providing a complete product at the end of the allotted time. Although less common, this question informs interviewers about applicants to a significant extent.

Besides seeing if the applicant fixes the code snippet, interviewers get an insight into the personality of the applicant. Reacting in a positive manner, for example, implies that the applicant is ready for a challenge with little notice. In your interview, be active in fixing a code snippet and provide a more positive and professional response to the challenge in front of you.

Are you certified in C#? Or do you have any specialised education in C#?

This is more of a formal question and has a very simple benefit for the interviewer. In this question, tell the interviewer about any of the specific certifications and qualifications you hold in C#. This includes anything specific to particular disciplines in C#, as this informs the interviewer of the areas you excel in.

Here, avoid discussing more generic qualifications you hold. For example, holding a degree in computer science does not directly relate to your level of competency in C#. However, discussing something such as Google Cloud certifications relates to your ability to build web tools, sites and applications. Keeping your certifications as relevant as possible means that you're more likely to succeed in the job application as your experience benefits the company in a more precise manner.

Related: 14 coding courses to improve your skills (with definitions)

What is the problem with this C# code snippet?

Similar to the case of fixing a C# code snippet, this question features the interviewer presenting a code snippet to the applicant. Here, an applicant does not fix the code snippet. Instead, the applicant finds the problem with the C# code snippet. After finding the issue, the interviewer and applicant have a discussion about the problem, the impact the problem has on the code and some potential routes to resolution.

This is a more conversational way of implementing a practical element into an interview and tells the interviewer a lot about you. It outlines your problem-solving process. The method by which you go through an issue is important and sets out your problem.

More technical questions

Rather than stating a specific form of technical question, this is an entire category of questions in its own right. This establishes your technical abilities and knowledge in coding, such as your knowledge of terminology and the function of different parts of code. With a C# interview, this includes:

  • What is code compilation in C#?

  • What is the difference between managed and unmanaged code?

  • What is a delegate variable?

  • What is a string?

  • What basic operations can a string complete?

  • What are Custom Control and User Control?

  • How do you create an array with only non-default variables?

The potential for these questions means that's a good idea to revise your technical knowledge of C# prior to the interview. Whilst you know the technical information, recalling it at a moment's notice is key in an interview. Look through old notes and books as a simple form of revision prior to your interview.

Related: 13 common technical interview questions (with tips and example answers)

Why are you right for this role?

This is a more generic question, present in the vast majority of interviews. Still, this question is one of the most important in an interview. The best answers discuss the ethos of the company, your own personality and how you're the right person to take on that specific role in that company. Without dealing with your qualifications or the technical side of the position, this is your opportunity for putting your personality forwards.

In this question, relate your previous experiences and personality to the company as closely as possible. This is important, as demonstrating that you're an ideal match for the business relates to both your personality and the work you have completed in the past. Researching the company in advance and preparing an answer to this question ahead of the interview is ideal. It means that you do not improvise a sub-optimal answer in the interview itself, but display confidence.

Related: Answering: Why Are You the Best Person for this Job?

Please note that none of the companies, institutions or organisations mentioned in this article are affiliated with Indeed. The model shown is for illustration purposes only, and may require additional formatting to meet accepted standards.

Related articles

Coding vs programming: what are the main differences?

Explore more articles