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About the test

The C# online test assesses candidates' knowledge of programming in the C# language and their ability to leverage commonly used parts of the .NET framework's class library.

It's an ideal test for pre-employment screening. A good C# developer needs to be able not only to solve problems using C# but also recognize when to leverage the functionality provided by the .NET framework's class library to write robust and maintainable code.

This online test requires candidates to solve coding problems in C# and find and fix bugs in a C# program.

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.

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58 more premium C# questions

Driver Exam, Max Sum, Log Patch, 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, Language Teacher, 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, Car Rental, Wheel Defects, Flight Connections, Paper Strip, Vectors.

Skills and topics tested

  • C#
  • Exceptions
  • Algorithmic Thinking
  • Extension Methods
  • 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

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

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