Software Development C# and .NET

C# and .NET Fundamentals

Build a strong foundation in modern C# programming and practical .NET application development.

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Quick Course Facts
18
Self-paced, Online, Lessons
18
Videos and/or Narrated Presentations
6.2
Approximate Hours of Course Media
About the C# and .NET Fundamentals Course

C# and .NET Fundamentals is an online Software Development course designed to help you learn C# from the ground up and apply it in practical .NET projects. You will Build a strong foundation in modern C# programming and practical .NET application development. while gaining the confidence to write, debug, structure, and extend real applications.

Build Practical Skills With C# And .NET Fundamentals

  • Learn the core C# syntax used in everyday Software Development, including variables, types, expressions, conditions, loops, and methods.
  • Practice object-oriented programming with classes, objects, encapsulation, constructors, inheritance, interfaces, and polymorphism.
  • Work with practical .NET features such as files, JSON data, LINQ, packages, project files, and configuration.
  • Apply your skills in a capstone project by building a small .NET application from start to finish.

This course introduces the C# language, the .NET ecosystem, and the essential programming concepts needed for practical application development.

You will begin by exploring the C# and .NET ecosystem, setting up your development environment, and writing your first C# program. From there, the course moves into the building blocks of Software Development, including variables, strings, numbers, dates, formatting, branching logic, loops, methods, parameters, and return values.

As you progress through C# and .NET Fundamentals, you will learn how to organize and work with data using arrays, lists, and dictionaries. You will also develop a clear understanding of object-oriented programming, including how to create classes, initialize objects, protect data through encapsulation, and use inheritance, interfaces, and polymorphism to design more flexible code.

The course also focuses on reliability and practical .NET application development. You will learn how to handle exceptions, write defensive code, debug C# applications, read and write files, work with JSON data, query collections with LINQ, and manage packages, project files, and configuration.

By the end of this Software Development course, you will have completed a small .NET application and gained the practical knowledge needed to continue building C# projects with confidence. C# and .NET Fundamentals will help you move from beginner concepts to structured, working code you can understand, maintain, and improve.

Course Lessons

Full lesson breakdown

Lessons are organized by topic area and each includes descriptive copy for search visibility and student clarity.

Getting Started

3 lessons

Lesson 1: The C# and .NET Ecosystem

18 min Preview
This lesson orients learners inside the C# and .NET ecosystem before they start writing code. It explains the difference between the C# language, the .NET platform, the runtime, the SDK, and the libra…

Lesson 2: Setting Up the Development Environment

17 min
In this lesson, students set up a practical C# and .NET development environment that is ready for the rest of the course. The focus is on installing the .NET SDK, choosing an editor, confirming the co…

Lesson 3: Your First C# Program

19 min
In this lesson, you will create and run your first C# program using the .NET command-line tools. You will learn what a console application is, how a minimal C# program is organized, and how the build-…

Core C# Syntax

4 lessons

Lesson 4: Variables, Types, and Expressions

21 min
This lesson introduces the everyday building blocks of C# code: variables, built-in types, literals, operators, and expressions. Students learn how C# stores values, how type choices affect correctnes…

Lesson 5: Strings, Dates, Numbers, and Formatting

20 min
In this lesson, students learn how C# represents and formats everyday data: text, calendar values, times, decimals, integers, percentages, currency, and culture-specific output. The focus is practical…

Lesson 6: Branching Logic with Conditions

18 min
In this lesson, learners practice using conditional logic to make C# programs choose different paths at runtime. The lesson focuses on if , else if , else , comparison operators, logical operators, an…

Lesson 7: Loops and Repeated Work

18 min
Loops let C# programs repeat work without duplicating code. In this lesson, students learn when to use while , do , for , and foreach loops, how to control loop execution safely, and how to avoid comm…

Program Structure

1 lesson

Lesson 8: Methods, Parameters, and Return Values

22 min
In this lesson, students learn how to organize C# programs with methods: named blocks of code that perform a focused task. The lesson covers method signatures, parameters, arguments, return values, vo…

Working with Data

1 lesson

Lesson 9: Arrays, Lists, and Dictionaries

23 min
This lesson introduces the core collection types C# developers use every day: arrays, List<T> , and Dictionary<TKey, TValue> . You will learn when to choose each one, how to create and upd…

Object-Oriented Programming

3 lessons

Lesson 10: Classes, Objects, and Encapsulation

24 min
In this lesson, you will learn how C# uses classes and objects to model data and behavior in a program. You will define classes, create object instances, work with fields and properties, and understan…

Lesson 11: Properties, Constructors, and Object Initialization

21 min
In this lesson, students learn how C# classes control object data through properties, constructors, and initialization syntax. The focus is on practical class design: exposing state safely, setting re…

Lesson 12: Inheritance, Interfaces, and Polymorphism

24 min
This lesson explains how C# uses inheritance, interfaces, and polymorphism to model shared behavior while keeping code flexible and maintainable. You will learn when to use a base class, when to defin…

Reliability and Debugging

2 lessons

Lesson 13: Exception Handling and Defensive Code

20 min
Reliable C# programs do not assume that every input, file, network call, or dependency will behave perfectly. This lesson explains how to use exceptions, validation, and defensive coding patterns to m…

Lesson 14: Debugging C# Applications

19 min
Debugging is the process of finding the real cause of incorrect behavior, not just making an error message disappear. In this lesson, students learn how to debug C# applications using breakpoints, ste…

Practical .NET Development

3 lessons

Lesson 15: Working with Files and JSON Data

23 min
In this lesson, students learn how practical .NET programs read from and write to the file system, build reliable file paths, handle common I/O errors, and work with JSON data using System.Text.Json .…

Lesson 16: LINQ for Querying Collections

22 min
This lesson introduces LINQ as the standard way to query, filter, transform, and aggregate collections in C#. Learners will practice using common LINQ extension methods such as Where , Select , OrderB…

Lesson 17: Packages, Project Files, and Configuration

21 min
This lesson explains how practical .NET projects are organized once code moves beyond a single file. Students learn how SDK-style project files describe the target framework, output type, package refe…

Capstone Application

1 lesson

Lesson 18: Building a Small .NET Application

25 min
In this capstone lesson, learners build a small .NET console application that brings together core C# skills: project structure, classes, collections, validation, file persistence, and clear program f…
About Your Instructor
Professor Chloe Vincent

Professor Chloe Vincent

Professor Chloe Vincent guides this AI-built Virversity course with a clear, practical teaching style.