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Welcome to the official PetaPoco repository

Originally the brainchild of Brad Robinson,

PetaPoco is a tiny, fast, single-file micro-ORM for .NET and Mono

Like Dapper, it's fast because it uses dynamic method generation (MSIL) to assign column values to properties
Like Massive it's available as single file that you easily add to any project or complied.
Like Massive, it now also supports dynamic Expandos too - read more
Unlike Massive it works with strongly typed POCO's
Like ActiveRecord, it supports a close relationship between object and database table
Like SubSonic, it supports generation of poco classes with T4 templates

Features at a Glance

Tiny, and absolutely no dependencies!
Works with strictly undecorated POCOs, or attributed almost-POCOs.
Easy to configure and includes fluent configuration out of the box.
Helper methods for Insert/Delete/Update/Save and IsNew
Paged requests automatically work out total record count and fetch a specific page.
Easy transaction support.
Better parameter replacement support, including grabbing named parameters from object properties.
Great performance by eliminating Linq and fast property assignment with DynamicMethod generation.
The query language is good ole SQL.
Includes a low friction SQL builder class that makes writing inline SQL much easier.
Includes T4 templates to automatically generate POCO classes for you.
Hooks for logging exceptions, installing value converters and mapping columns to properties without attributes.
Works with SQL Server, SQL Server CE, MS Access, SQLite, MySQL, MariaDB, Firebird, and PostgreSQL. (Oracle supported but does not have integration tests).
Works under .NET 4.0/4.5/4.6 or Mono 2.8 and later.
Has Xunit unit tests.
Has supported DBs integration tests.
OpenSource (Apache License)
All of this in about 1,500 lines of code

Super easy use and configuration

Save an entity

    db.Save(article);
    db.Save(new Article { Title = "Super easy to use PetaPoco" });
    db.Save("Articles", "Id", { Title = "Super easy to use PetaPoco", Id = Guid.New() });

Get an entity

    var article = db.Single<Article>(123);
    var article = db.Single<Article>("WHERE ArticleKey = @0", "ART-123");

Delete an entity

    db.Delete(article);
    db.Delete<Article>(123);
    db.Delete("Articles", "Id", 123);
    db.Delete("Articles", "ArticleKey", "ART-123");

Plus much much more.

Documentation

For configuration, code examples and other general information See the docs

Download

PetaPoco is available from:

NuGet Peta - https://www.nuget.org/packages/PetaPoco/ - A single file include with T4 text templates to automatically build your pocos for you.
NuGet Peta Core - https://www.nuget.org/packages/PetaPoco.Core/ - A single file include.
NuGet Peta Core Compiled - https://www.nuget.org/packages/PetaPoco.Core.Compiled/ - A compiled version which your project references.

Contributing

PetaPoco welcomes input from the community. After all, what is a product without users? If you’d like to contribute, please take the time to read the contribution guide. We would also suggest you have a quick read of Contributing to Open Source on GitHub.

Contributions Honour Roll

A product like PetaPoco isn't the effort of one person, but rather a combined effort of many. For those individuals who rise above and beyond we have a special place to honour them.

wennba/PetaPoco