Search Adaface test library by skills or roles
⌘ K

C# Online Test

The C# test has scenario-based MCQ questions to evaluate C# basics (variables, functions, types etc.), C# OOP concepts (classes and design patterns), efficient C# usage (exceptions handling, garbage collection etc.) and the ability to scale C# programs using Asynchronous programming. The test uses simple coding questions to evaluate hands-on C# programming knowledge.

Customized Based On:

  • Experience/ difficulty level
  • Multiple skills in 1 assessment
  • Job description/ role requirements

Covered Topics:

Use of variables
functions and data types
OOP concepts (Objects; Classes; Methods)
Inheritance and polymorphism
Dealing with Errors/ Exceptions and Nulls
Garbage Collector and Memory footprint
Structural and Creational Design Patterns
Asynchronous programming
API development principles
See full list
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

Human Resources Manager

Singapore Government

reduction in screening time

Sample C# Online Test Questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this C# Online Test will be non-googleable.

🧐 Question🔧 Skill💪 Difficulty⌛ Time
Classes and Constructors
What is the output of the following C# code?
C#Medium2 min
Arrays and Exceptions
What is the output of the following C# code?
Arrays Exceptions
C#Easy2 min
Multiple Namespaces
Class Student exists in both firstnamespace and secondnamespace namespaces. Which of the following are the correct ways to use the Student class?
C#Medium2 min
Static and constructors
What is the output of the following C# code?
C#Medium3 min

How to use the Adaface C# Online Test

Start screening candidates within minutes with the ready-to-go C# Online Test

1. Choose the most appropriate test for your role

2. Start inviting candidates to complete the assessment

3. Receive real time notifications and shortlist the best candidates

OR Customize the Adaface C# Online Test according to your job description

1. Get a custom assessment from our library of 500+ skills within 48 hours

2. Start inviting candidates to complete the assesment

3. Receive real time notifications and shortlist the best candidates

Adaface C# Online Test is trusted by enterprises worldwide

Morgan Stanley
SG Government
Ernst and Young
Optimum Solutions
United Nations
Love Bonito

About the Adaface C# Assessment Test

Evaluate C# technical and coding skills with Adaface skills assessment platform powered by an intelligent chatbot


Types and Variables
Expressions and Operators
Control Statements
Classes, Objects and Methods
Dealing with Null values
Object-oriented Programming (OOP)
Inheritance and Polymorphism
API development
Garbage Collector
Memory footprint
Prototype Pattern
Adapter Pattern
Lambda Expressions
Memory management

Recommended Roles:

C# Developer
C# Programmer
Senior C# Engineer
Software Developer (C#)
C# .NET Developer
System Analyst (C#)
Unity Programmer
Senior Software Engineer (C#)

Why You Should Use This C# Online Test

The C# online assessment test is designed and validated by industry experts to assess C# skills of the candidate. Top tech companies are using our C# programming test to reduce candidate screening time by 85%.

The test evaluates the candidates on key C# skills hiring managers look for:

  • Core features of programming – variables, constants, functions and data types
  • Control the flow of programs using conditional statements. Using arrays and lists.
  • Working with C# types- properties, fields and access modifiers
  • Work with classes, constructors, fields, properties, methods and indexers (OOP Concepts)
  • Developing loosely-coupled, testable and extensible applications using interfaces
  • Ability to handle errors and avoid them
  • Knowledge of delegates, events, and garbage collection basics
  • Asynchronous programming and data security - encrypting user files and hash data

The test includes coding questions to evaluate hands-on C# programming skills.

How To Screen Senior C# Developers

We customize the assessment based on the seniority level expected from the candidates. The customization happens on two levels:

  • Advanced topics will be picked for designing MCQ questions
  • Coding question will be of a higher difficulty level to ensure it evaluates the usage of advanced C#

Here are a few topics we include for designing Senior C# Engineer tests:

  • Knowledge of common problems: classes vs structures, abstract classes vs interfaces, creational patterns vs constructors
  • Avoiding common implementation smells such as poor naming, excessively long methods, output parameters
  • Avoiding common architectural design smells such as primitive obsession, hidden dependencies
  • Measuring and optimizing the memory footprint of your code
  • Efficiently structuring code with structural and creational design patterns
  • Multi-step object construction with the Builder pattern
  • Core multi-threading knowledge: data exchange, safe thread usage, crashes
  • Dealing with problems of asynchronous code, like race conditions, deadlocks, livelocks and synchronization issues

Distribution Of Test Scores

The actual score distribution will vary based on your candidate pipeline quality, but you should typically expect ~20% of the candidates to do well on Adaface assessments.

The score distribution for our assessments follow the normal curve. This is a good sign- standardized tests like SAT and GRE follow the normal distribution (bell curve).

Status quo assessments typically have the exact opposite of the bell curve (too many candidates getting close to 0, too many candidates getting close to 100 and too few candidates in the middle). This is typically because they focus on theoretical questions or trick questions, which are very binary in nature- either you know the trick/ theory or you don’t.

How Adaface Is Different

Adaface conversational assessments are reflective of on-the-job skills and see an 86% completion rate as compared to ~50% for traditional assessment platforms.



Theoretical questions/ puzzles

Feels like a test

One-size-fits-all assessments




Questions for on-the-job skills




C# Online Test FAQs

Can I evaluate .NET along with C#?

Yes. We support evaluating C# and .NET in the same assessment. You can review our standard ready-to-go C# + .NET test to understand how the assessment would be designed. For customized assessments, we design the questions as per your job description and the final test will evaluate C#, .NET and coding skills together.

Can I evaluate .NET MVC in the same assessment?

Yes. We support evaluating C# and .NET MVC in the same assessment. For customized assessments, we design the questions as per your job description and the final test will evaluate C#, .NET MVC and coding skills together.

Can I evaluate frontend skills along with C#?

Yes. You can evaluate multiple skills in a single assessment. You can check our standard HTML/ CSS, React, Angular, Vue assessments to get a sense of what questions would be asked. You can get a custom assessment designed that has questions to evaluate all the must-have skills of your job description. So for a standard Full Stack React C# developer role, the test will have questions to evaluate React, JavaScript, HTML/ CSS, ASP.NET, C# and coding skills.

What is a custom assessment?

Every role is different and requires a custom assessment to identify top candidates efficiently. Adaface subject matter experts understand your job description/ role requirements and pick the most relevant questions from our library of 10000+ questions to create a technical assessment that helps you find the qualified candidates in your candidate pipeline quickly. All custom assessments are set up based on the job description, role requirements, must-have skills, experience level and salary range within a maximum of 48 hours and you will get an email notification once it goes live.

Check out a sample assessment here (no credit card required).

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

How is Adaface different from other assessment tools?

We believe that status quo tech assessment platforms are not a fair way for companies to evaluate engineers because they focus on trick questions/ puzzles/ niche algorithms. We started Adaface to help companies find great engineers by assessing on-the-job skills required for a role. Read more about why we started Adaface.

Here's what's different with Adaface:

  • High quality non-googleable questions that test for on-the-job skills as opposed to theoretical knowledge.
  • A friendly conversational assessment with a chatbot, instead of sending a "test" to a candidate. This translates to a higher completion rate. Adaface assessments (86% candidate completion rate), as opposed to traditional tests (40-50% candidate completion rate)
  • Customized assessments for 700+ skills at different experience levels.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Web proctoring
  • Webcam proctoring
  • Plagairism detection
  • Non-googleable questions
  • Secure browser

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

The platform is completely self-serve, so here's one way to proceed:

  • You can sign up for free to get a feel for how it works.
  • The free trial includes one sample assessment (Java/ JavaScript) that you will find in your dashboard when you sign up. You can use it to review the quality of questions, and the candidate experience of a conversational test on Adaface.
  • To review the quality of questions, you can also review our public questions for 50+ skills here.
  • Once you're convinced that you want to try it out with real assessments and candidates, you can pick a plan according to your requirements.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

hashtag image heart icon Brandon
Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
Have any questions about the Adaface C# Online Test?
Have any questions about the Adaface C# Online Test?
Chat with us ✨
Terms Privacy Trust Guide