Article: Native Mapping in .NET: Take Control with Extension Methods
This repository demonstrates a lightweight, high-performance approach to object mapping in .NET using Extension Methods. By bypassing third-party libraries like AutoMapper or Mapster, this project showcases how to maintain full control over data transformations while achieving superior performance in critical execution paths.
- Zero-Dependency Mapping: Implementing transformations without external NuGet packages.
- DTO Strategy: Managing UserRequestDto, UserUpdateDto, and UserResponseDto.
- Extension Method Pattern: Creating a clean, readable API for object conversion.
- In-place Updates: Using mapping to update existing entities without creating new instances.
Most mapping libraries rely on Reflection, which can introduce overhead. Native mapping uses Direct Assignment, making it the fastest possible way to move data between objects in C#.
By extending the DTOs and Entities themselves, the mapping logic stays encapsulated in a static class but feels like a native part of the objects. This results in "Fluent" code that is easy to read and maintain.
- Framework: .NET 9
- Language: C#
- Patterns: Extension Methods, DTO (Data Transfer Object)
This repository is part of my technical writing and learning notes.
If you found it useful, consider starring the repo and sharing feedback.
- Author: Joao Oliveira
- Blog: https://joaooliveira.net
- Topics: .NET, Redis, Distributed Systems, Caching Patterns
Issues and pull requests are welcome.
If you plan a larger change, please open an issue first so we can align on scope.
Licensed under the MIT License. See the LICENSE file for details.