Object Mapping

Lesson in the ASP.NET Core Roadmap · Stage 20: Object Mapping

Last updated 14 September 2026

What is Object Mapping?

Object mapping in ASP.NET refers to the process of converting an object of one type to an object of another type. This can be useful in a number of scenarios, such as when working with domain models and data transfer objects (DTOs) in a layered architecture, or when mapping between different versions of an object or different formats such as JSON and XML.

There are several libraries available for object mapping in ASP.NET, such as AutoMapper, ExpressMapper, AgileMapper, AgileMapster and Mapster. These libraries provide a convenient and flexible way to map between objects, using a convention-based approach or a fluent API to configure more complex mappings. They also support for a wide range of mapping scenarios, including nested and circular object graphs, collections, and different types of inheritance.

Study this in the interactive course See the whole ASP.NET Core roadmap

Free resources to learn Object Mapping

ArticleBuilding a Fast Object-to-Object Mapper in .NET
ArticleOverview of Object Mapping in ASP.NET
ArticleComparison of Object Mapper Libraries

Object Mapping: common questions

Can I learn Object Mapping in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Object Mapping in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Object Mapping tutorial for beginners?

It is lesson 81 of 146 in the free ASP.NET Core roadmap, in stage 20, Object Mapping. If you are new to ASP.NET Core, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.