Dometrain - Mastering: C#
Released 7/2026
By Sergey Teplyakov
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: Mastering | Genre: eLearning | Language: English | Duration: 3h 25m | Size: 1.3 GB
# Dometrain - Mastering C#
**Mastering C#** is an advanced C# course from **Dometrain**, designed for developers who already know the basics of C# and want to write high-quality, modern, and maintainable code. It focuses on language features, best practices, performance, and real-world development rather than introductory programming.
## Prerequisites
Before starting, you should be comfortable with:
* Variables and data types
* Control flow (`if`, `switch`, loops)
* Methods
* Classes and objects
* Basic inheritance and interfaces
* Exception handling
* Basic use of the .NET CLI or Visual Studio
---
# Course Outline
## Module 1: Advanced C# Fundamentals
* Value types vs reference types
* Memory management
* Garbage Collection (GC)
* Stack vs Heap
* Nullable reference types
**Skills gained:**
* Understand how C# stores and manages memory.
* Write safer code using nullable reference types.
---
## Module 2: Object-Oriented Programming Deep Dive
* Encapsulation
* Inheritance
* Polymorphism
* Abstraction
* Composition vs inheritance
* SOLID principles
**Project:** Build a modular order processing system.
---
## Module 3: Modern C# Features
* Records
* Init-only properties
* Pattern matching
* Switch expressions
* Target-typed `new`
* Top-level statements
* Required members
* File-scoped namespaces
**Skills gained:**
* Write concise, modern C# code.
* Improve readability and maintainability.
---
## Module 4: Generics
* Generic classes
* Generic methods
* Constraints
* Covariance and contravariance
**Project:** Create a reusable generic repository.
---
## Module 5: LINQ
* Query syntax
* Method syntax
* Filtering
* Projection
* Grouping
* Aggregation
* Joins
* Deferred execution
**Project:** Analyze and report on sales data.
---
## Module 6: Delegates and Events
* Delegates
* Multicast delegates
* Lambda expressions
* Events
* Event handlers
**Project:** Build an event-driven notification system.
---
## Module 7: Asynchronous Programming
* `async` and `await`
* `Task` and `Task<T>`
* Cancellation tokens
* Parallel programming
* Exception handling in async code
**Project:** Download multiple files concurrently.
---
## Module 8: Collections
* `List<T>`
* `Dictionary<TKey,TValue>`
* `HashSet<T>`
* `Queue<T>`
* `Stack<T>`
* Immutable collections
---
## Module 9: Error Handling
* Exceptions
* Custom exceptions
* Logging
* Result patterns
* Defensive programming
---
## Module 10: Reflection and Attributes
* Reflection
* Custom attributes
* Metadata
* Dynamic loading
---
## Module 11: Dependency Injection
* Inversion of Control (IoC)
* Dependency Injection (DI)
* Service lifetimes
* Constructor injection
* Built-in .NET DI container
---
## Module 12: Performance
* Benchmarking
* `Span<T>`
* `Memory<T>`
* Object pooling
* Allocation reduction
* Efficient string handling
---
## Module 13: Testing
* Unit testing
* Mocking
* Test-driven development (TDD)
* Integration testing
---
## Module 14: Clean Code
* Naming conventions
* Refactoring
* Code smells
* Readability
* Maintainability
---
## Module 15: Design Patterns
* Singleton
* Factory
* Strategy
* Observer
* Mediator
* Repository
* Decorator
---
## Module 16: Advanced Topics
* Source generators
* Expression trees
* Dynamic programming
* Unsafe code (when appropriate)
* Interoperability with native code
---
# Capstone Project
Develop a production-style application that demonstrates:
* Modern C# features
* Dependency Injection
* Asynchronous programming
* LINQ
* Unit testing
* Logging
* Error handling
* Clean architecture
---
# Skills You'll Gain
* Advanced C# language proficiency
* Writing maintainable and expressive code
* Building high-performance .NET applications
* Applying SOLID principles and design patterns
* Effective use of async programming and LINQ
* Structuring code for testability and scalability
---
# Recommended Companion Topics
To get the most from this course, consider studying alongside:
* .NET 8 or .NET 9 fundamentals
* ASP.NET Core Web API
* Entity Framework Core
* SQL Server or PostgreSQL
* Git and GitHub
* Docker
* Unit testing with xUnit or NUnit
* Clean Architecture
## Who Should Take This Course?
This course is ideal for:
* Developers with basic C# knowledge who want to deepen their expertise.
* .NET developers preparing for senior or lead roles.
* Backend developers building scalable applications.
* Software engineers preparing for technical interviews involving C# and .NET.
By completing an advanced course like **Dometrain - Mastering C#**, you should be able to write modern, idiomatic C# code, make informed design decisions, optimize performance where appropriate, and build robust applications using current .NET best practices.
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