C# Online Test

TestDome skill assessments are used by more than 8,000 companies and 880,000 test takers.

For Jobseekers

Practice your skills and earn a certificate of achievement when you score in the top 25%.

Take a Practice Test

For Companies

Test candidates with real-world problems and interview the best ones.

Sign Up to Offer this Test

About the test

The C# online test assesses knowledge of programming in the C# language through a series of live coding problems.

The assessment includes work-sample tasks such as:

  • Working with classes, objects, and interfaces to write reusable code.
  • Implementing and properly using algorithms and data structures to optimize application performance.
  • Using components provided by the .NET framework class library.

A good C# developer needs a solid understanding of the C# programming language as well as the .NET framework class library and its functionality to write robust and maintainable code.

Sample public questions

Easy
3 min
mca
Public
C#
Inheritance
OOP

A company is designing the class hierarchy for various cache implementations:

public class Cache {}

public class DiskCache : Cache {}

public class MemoryCache : Cache {}

public class OptimizedDiskCache : DiskCache {}

Select all the answers that will result in a runtime exception.

Easy
10 min
code
Public
C#
Interfaces
Inversion of Control
Refactoring

Refactor the AlertService and AlertDAO classes:

  • Create a new interface, named IAlertDAO, that contains the same methods as AlertDAO.
  • AlertDAO should implement the IAlertDAO interface.
  • AlertService should have a public constructor that accepts IAlertDAO.
  • The RaiseAlert and GetAlertTime methods should use the object passed through the constructor.

For jobseekers: get certified

Earn a free certificate by achieving top 25% on the C# test with public questions.

Take a Certification Test

Sample silver certificate

Sunshine Caprio

Java and SQL
TestDome
Certificate
TestDome logo icon

For companies: premium questions

Buy TestDome to access premium questions that can't be practiced.
Get money back if you find any premium question answered online.

Sign Up to Offer this Test

58 more premium C# questions

Driver Exam, Max Sum, Shipping, Classroom, Disposable Wrapper, Document Counter, Eye of the Storm, Node, Paragraph, Product Refactoring, Snapshot, Sort Params, Window Manager, Shining Star, Bicycle, Nullable Employee, Kilometer Converter, Stack to List, Fire Dragon, Log Parser, Ingredient Tuple, Animal Hierarchy, Chinese Box, Worker, Racer, XML Navigation, Segment, Ceramic Store, Patient Class, String Occurrence, Username, Book Sale, Unique Product, Stories, Procedural Generator, Internal Nodes, Weighted Average, Friend, Document Store, Crop Ratio, Hobbies, Platformer, Shelf Test, Read Write Execute, Read First Line, Date Transform, Chain Link, Prefix, Unique Numbers, Moving Total, Veterinarian, Wheel Defects, Flight Connections, Paper Strip, Vectors, Car Rental, Language Teacher, Log Patch.

Skills and topics tested

  • C#
  • Exceptions
  • Algorithmic Thinking
  • Arithmetic
  • Accessibility Levels
  • Properties
  • Destructors
  • Memory Management
  • OOP
  • Refactoring
  • Recursion
  • Tree
  • Regex
  • Strings
  • Lists
  • Pass by Reference
  • Dictionary
  • Linked List
  • TDD
  • Field Modifiers
  • Null Coalescing Operator
  • Null Conditional Operator
  • Inheritance
  • Method Overriding
  • Complexity
  • Stack
  • Higher Order Function
  • Interfaces
  • Serialization
  • XML
  • LINQ
  • Tuples
  • Abstract Class
  • Data Structures
  • Bug Fixing
  • Multithreading
  • Synchronization
  • Dynamic Objects
  • Stream
  • Sorting
  • Dynamic Programming
  • Random
  • Arrays
  • Graphs
  • Language
  • Integer Division
  • Iteration
  • Test Case Design
  • Unit Testing
  • HashSet
  • Queue
  • StringBuilder
  • Extension Methods

For job roles

  • .NET Developer
  • Back-End Developer
  • C# Developer
  • Web Developer

Sample candidate report

What others say

Decorative quote

Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 High Performer 2022G2 Read Our Reviews

Used by

Solve all your skill testing needs

150+ Pre-made tests

From web development and database administration to project management and customer support. See all pre-made tests.

90+ skills

From JavaScript and SQL to English and customer support. See all questions to filter by skill.

Multi-skills Test

Mix questions for different skills or even custom questions in one test. See an example.

How TestDome works

1

Choose a pre-made test
or create a custom test

2

Invite candidates via
email, URL, or your ATS

3

Candidates take
a test remotely

4

Sort candidates and
get individual reports