Plain old CLR object
A plain old CLR object is a simple .NET object that carries application data without framework-specific inheritance, dependencies, or behavioral requirements.
ASP.NET Core in Action, 3e
A plain old CLR object is an ordinary .NET object that does not depend on a specialized framework base type or programming model.
- How it is used
- Uses ordinary classes as inputs, configuration objects, database entities, and JSON response values across ASP.NET Core features.
- How deep it goes
- Defines POCOs and explains binding conventions, but stops short of detailing every EF Core mapping convention.
- Examples
- Uses BindableOptions, Recipe, Ingredient, Person, and Fruit as concrete POCO examples.
- What you can do after
- Apply it via model binding, IOptions<T>, EF Core entities, and minimal API JSON responses.
Read how ASP.NET Core in Action, 3e explains plain old CLR object →
Building Web APIs with ASP.NET Core
A plain old CLR object (POCO) is a normal .NET class without framework-specific inheritance or dependencies.
- How it is used
- Defines simple data objects returned by ASP.NET Core web API actions.
- How deep it goes
- Defines the class shape and serialization role, but stops short of database-backed behavior or complex domain responsibilities.
- Examples
- Uses WeatherForecast and BoardGame classes with Date, TemperatureC, Summary, Id, Name, and Year properties.
- What you can do after
- Build it from scratch as a simple C# data class and return its objects from a controller or Minimal API endpoint.
Read how Building Web APIs with ASP.NET Core explains plain old CLR object →
Related concepts
- model bindingproduced by · Model binding is the process of locating incoming data, converting it to appropriate types, and assigning it to application objects or handler parameters.
- eventincludes · An event is an occurrence, change, or associated record or notification recognized as significant within a system or context.
- strongly typed optionsused by · Strongly typed options are configuration values represented by typed .NET objects whose properties correspond to application settings.
- CsvHelperimplemented by · CsvHelper is an open-source .NET library for reading and writing comma-separated and other delimited text data.
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