C# Developer

Overview Learning objectives What you’ll learn Key facts Module listing FAQs What our customers say Get in touch

Course overview

Build practical C# capability through guided coding exercises that focus on how the language is used in professional software development. You’ll work with core syntax, control flow, object-oriented structures and data handling, developing the technical judgement needed to write clearer code and resolve programming challenges more effectively. The course supports developers building a stronger foundation in C# and applying that knowledge with greater consistency at work.

Develop production-ready C# coding capability

This five-day course helps you build a stronger foundation in C# by developing your understanding of core language features and object-oriented programming. You’ll practise structuring application logic, working with classes and objects, applying inheritance and polymorphism, handling exceptions and using collections. The course is suited to developers moving into C#, people learning C# as a first language, and programmers with little or no previous object-oriented experience.

Learning objectives

Write and run structured C# applications
Apply object-oriented programming principles
Build application logic using decisions and loops
Work with classes, objects, structs and methods
Use inheritance, encapsulation and polymorphism
Work with abstract classes and interfaces
Manage collections and data
Handle exceptions effectively
Work with strings, dates and number formatting
Understand static members and class structure

What you’ll learn

Develop the technical foundations and coding discipline needed to write clearer, more maintainable C# applications. The course focuses on core language features, application logic, object-oriented structure, exception handling and data-related tasks, helping you apply C# more confidently in professional development environments.

Build readable C# applications

Gain a stronger understanding of how C# applications are structured, from syntax and programme flow through to methods, classes and reusable code. You’ll practice writing code that is easier to read, test and maintain, helping reduce rework and making it simpler for colleagues to understand and support your applications.

Design controlled application behaviour

Strengthen how you use decisions, loops, operators and conditional logic to manage how an application responds. You’ll also learn how to translate requirements into clear programme flow, supporting more predictable behaviour, fewer avoidable defects and software that is easier to validate when requirements change.

Organise code for maintainability

Apply object-oriented techniques to structure code around classes, objects, methods and relationships. You’ll explore how to reduce duplication, separate responsibilities and create reusable components, supporting cleaner collaboration, faster changes and codebases that are easier to extend as business needs evolve.

Handle exceptions and work with collections

Learn how to manage errors using exception handling, including throwing and catching exceptions and using try, catch and finally. You’ll also work with strings, dates and generic collections, including List and Dictionary, to broaden your understanding of how C# applications organise and manage information.

What’s included

Instructor-led C# training over five days
Live virtual classroom environment
Hands-on exercises and live labs
All relevant course materials

Key facts

Certification

This is a skills and knowledge-based course with no formal accreditation.

Who it’s for

This course is suited to professionals looking to build or strengthen their C# development capability within a practical learning environment.

Prerequisites

Some previous programming experience is required. You should understand general programming concepts including variables, arrays, sequence, selection and iteration, and be comfortable navigating the filesystem and editing and saving text files.

Exam information

There is no exam included in this training course.

Optional extras

There are no optional extras available with this course.

Pre-course

There are no pre-course requirements for this training course.

Full module listing

Click on each day below to see the breakdown of the modules that you'll cover on the course.

Day one

Day two

Day three

Day four

Day five

Day one

Session 1: INTRODUCING C#

History of the Language
C# and .NET
Common Intermediate Language
Common Language Runtime
Compiling and Running Code
Development tools

Session 2: VARIABLES

Using Namespaces
Declaring Variables
Value and Reference Types
Datatypes
Variable Scope

Session 3: OPERATORS

Arithmetic Operators
Unary Operators
Concatenation Operators
Comparison Operators
Logical Operators

Session 4: DECISIONS

If Statements
Switch Statements

Day two

Session 5:LOOPS

Types of Loop
Break and Continue Statements

Session 6: ARRAYS AND ENUMS

Populating Arrays
Looping Through Arrays
Working with Enums

Session 7: METHODS

Fields and Methods
Method Parameters
Method Overloading
Optional Parameters

Session 8: OBJECTS

Creating Objects
Instance Fields
Instance Methods

Day three

Session 9: CLASSES AND STRUCTS

Class Structure
Constructors
Using Structs

Session 10: ENCAPSULATION

Access Modifiers
Getters and Setters
Properties

Session 11: STATIC MEMBERS

Static Fields
Static Methods
Static Classes
Static Context

Session 12: INHERITANCE AND POLYMORPHISM

Object Oriented Programming
Extending Classes
Inheritance Modifiers
Polymorphism
Abstract Methods and Classes
Using Interfaces

Day four

Session 13: EXCEPTION HANDLING

Throwing Exceptions
Catching Exceptions
Using try, catch and finally
Custom Exceptions

Session 14: STRINGS AND DATES

The String Class
Using StringBuilder
Date Handling
Formatting Numbers

Session 15: COLLECTIONS

Working with Collections
Generic Collections
The List Class
The Dictionary Class

Day five

Session 16: DELEGATES, LAMBDAS AND EVENTS

Creating Delegates
Lambda Expressions
Events and Event Handlers

Session 17: FILE IO

I/O Streams
Handling Files
Serialising and Deserialising Data

Session 18: LINQ

Query Expressions
Ordering and Projection
Grouping and Joins
LINQ to XML

FAQs

This C# Developer course helps you build a stronger foundation in C# through practical exercises and examples. You’ll work with core language features, object-oriented techniques, exception handling, strings and collections, developing the knowledge and confidence to create structured C# applications and apply the concepts covered in practice.

Who is this C# Developer course suitable for?

This course is suitable for developers, programmers and technical professionals who want to strengthen their working knowledge of C#. It is particularly relevant if you are moving into C# from another language, building on early development experience, or need a more structured understanding of how C# is used to create maintainable applications.

What level of programming experience do I need?

Some prior programming experience is required. You should already be familiar with general concepts such as variables, arrays and loops, and be comfortable navigating files and editing text. The course introduces object-oriented programming in C#, so previous C# experience is not required, but it is not designed as a first step into programming.

What will I be able to do after the course?

You’ll be better equipped to write, compile and run C# applications, use variables and operators, control programme flow, work with methods, classes and objects, and apply exception handling. You’ll also gain experience with collections, file input and output, delegates, events, lambda expressions and LINQ, supporting more structured development work.

How will this help me in my role?

The course helps you approach coding tasks with greater structure and technical control. By improving how you organise logic, manage errors and structure reusable code, you can reduce avoidable rework, make applications easier to review and support, and contribute more effectively to development activity within your team.

How does this course support longer-term development?

By strengthening your foundation in C#, the course supports progression into more advanced development work. The skills covered can help you move towards application development, backend development or further .NET training, where a clearer understanding of C# structure, logic and object-oriented design is important.

Does the course include practical coding?

Yes. The course is built around practical coding exercises that help you apply each topic as it is introduced. This supports a more active learning experience, helping you connect C# concepts to the kinds of coding decisions developers need to make when building, maintaining and improving applications.

What our customers say

“The instructor had a great pace, allowing me and the rest of group to work on practical exercises after learning a new topic to consolidate the learning and ask any questions. I really enjoyed the course and look forward to future courses at TSG.”

Abdulmalik, TSG learner

“Very knowledgeable instructor, well-paced, not rushed. Everything was explained clearly.”

Kimberely, TSG learner

Why study with TSG?

25+ years' experience

Trusted by individuals, businesses and public sector organisations for over 25 years.

20,000+ learners trained

Join a network of learners focused on developing their software testing skills

98% customer satisfaction

TSG trainers are frequently rated as ‘good’ or ‘excellent’ by our learners

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