C# Roadmap

Step by step guide to becoming a modern C# developer in 2025

Step 1

Introduction to C#

C# Overview

Setting Up the Development Environment

Hello World in C#

Basic Syntax and Structure

Data Types and Variables

Control Flow Statements

Functions and Methods

Error Handling and Exceptions

Step 2

Object-Oriented Programming (OOP)

Classes and Objects

Inheritance

Polymorphism

Encapsulation

Abstraction

Interfaces

Structs

Enums

Step 3

Advanced C# Programming

Delegates and Events

Lambda Expressions

LINQ (Language Integrated Query)

Asynchronous Programming (async/await)

Generics

Reflection

Attributes

Memory Management and Garbage Collection

Step 4

.NET Core

Introduction to .NET Core

Setting Up .NET Core

Building Console Applications

Building Web Applications with ASP.NET Core

Entity Framework Core

Dependency Injection

Configuration in .NET Core

Logging in .NET Core

Step 5

.NET Standard

Introduction to .NET Standard

Creating .NET Standard Libraries

Cross-Platform Development with .NET Standard

Best Practices for .NET Standard

Testing .NET Standard Libraries

Deploying .NET Standard Libraries

Step 6

Xamarin

Introduction to Xamarin

Setting Up Xamarin

Building Mobile Apps with Xamarin

Xamarin.Forms

Xamarin.iOS

Xamarin.Android

Testing Xamarin Apps

Deploying Xamarin Apps

Step 7

Asynchronous Programming

Introduction to Asynchronous Programming

Understanding async and await

Task-Based Asynchronous Pattern (TAP)

Asynchronous Streams

Exception Handling in Asynchronous Code

Unit Testing Asynchronous Code

Step 8

Language Integrated Query (LINQ)

Introduction to LINQ

Basic LINQ Queries

LINQ to Objects

LINQ to SQL

LINQ to XML

Parallel LINQ (PLINQ)

LINQ and Lambda Expressions

Step 9

Expression Trees

Introduction to Expression Trees

Building Expression Trees

Modifying Expression Trees

Compiling Expression Trees

Debugging Expression Trees

Step 10

Task Parallel Library (TPL)

Introduction to TPL

Creating and Running Tasks

Cancelling Tasks

Waiting for Tasks to Complete

Handling Exceptions in Tasks

Continuations with Tasks

Task Schedulers

Step 11

Serialization

Introduction to Serialization

Binary Serialization

XML Serialization

JSON Serialization

Custom Serialization

Serialization Best Practices

Step 12

Security

Introduction to Security in .NET

Encryption and Decryption

Hashing

Authentication and Authorization

Secure Coding Practices

Handling Sensitive Data

Code Access Security

Step 13

Multithreading

Introduction to Multithreading

Creating and Managing Threads

Thread Synchronization

Thread Pooling

Concurrent Collections

Tasks and Parallelism

Async and Await

Step 14

Numerics

Introduction to Numerics in .NET

BigInteger

Complex Numbers

Vector Types

Random Number Generation

Performance Optimization

Step 15

Interop

Introduction to Interop

Platform Invocation Services (P/Invoke)

COM Interop

Calling Unmanaged Code

Marshaling Data

Handling Unmanaged Resources

Step 16

Windows Communication Foundation (WCF)

Introduction to WCF

Setting Up a WCF Service

Service Contracts

Data Contracts

Endpoints and Bindings

Hosting WCF Services

Consuming WCF Services

Security in WCF

Step 17

Entity Framework

Introduction to Entity Framework

Code First Approach

Database First Approach

Model First Approach

Querying Data with LINQ

Saving Data

Migrations

Performance Optimization

Step 18

C# Project Structure

Solution and Project Files

Namespaces

Assemblies

References

Build Configurations

Using NuGet Packages

Step 19

Debugging

Introduction to Debugging in Visual Studio

Setting Breakpoints

Stepping Through Code

Using Watch and Immediate Windows

Inspecting Variables and Call Stack

Advanced Debugging Techniques

Step 20

Unit Testing

Introduction to Unit Testing

Setting Up Unit Tests

Writing Test Cases

Running Tests in Visual Studio

Mocking Dependencies

Code Coverage

Continuous Integration and Testing

Step 21

MSTest

Introduction to MSTest

Setting Up MSTest

Writing Tests with MSTest

Running MSTests

Advanced MSTest Features

Step 22

NUnit

Introduction to NUnit

Setting Up NUnit

Writing Tests with NUnit

Running NUnit Tests

Advanced NUnit Features

Step 23

xUnit

Introduction to xUnit

Setting Up xUnit

Writing Tests with xUnit

Running xUnit Tests

Advanced xUnit Features

Step 24

Code Coverage

Introduction to Code Coverage

Tools for Code Coverage

Measuring Code Coverage

Improving Code Coverage

Analyzing Code Coverage Results

Step 25

Code Quality Tools

Introduction to Code Quality

Static Code Analysis

Code Metrics

Code Review

Refactoring Tools

StyleCop and FxCop

Step 26

Advanced C# Topics

Reflection

Dynamic Programming

Garbage Collection and Memory Management

Unsafe Code and Pointers

Attributes

Metadata and Custom Attributes

Preprocessor Directives

PostSharp and Aspect-Oriented Programming