eXpress Persistent Objects for .NET (XPO)eXpress Persistent Objects for .NET (XPO)

DevExpressData Mapping Tools.NET

A fast, flexible ORM library for .NET database applications.

  • Supports Code First, Model First, and Database First development processes.
  • Enables object-oriented data modeling and database schema generation.
  • Works with multiple database systems through a unified API.
DevExpress logo

Prices from:

Loading...
Available in
DevExtreme CompleteLoading
DevExpress ASP.NET and BlazorLoading
DevExpress WinFormsLoading
DevExpress WPFLoading
DevExpress DXperienceLoading
DevExpress UniversalLoading

Trial version available Contact us for a free trial

eXpress Persistent Objects for .NET (XPO) product image
eXpress Persistent Objects for .NET (XPO) is an Object-Relational Mapping library for .NET that abstracts database complexities, allowing developers to focus on business logic. It supports versatile development processes and multiple database engines, making it suitable for a variety of application architectures, from simple desktop apps to complex distributed systems.

Comprehensive ORM Functionality

Handles all aspects of database creation and object persistence automatically, reducing low-level database coding efforts by mapping object classes to database tables.

Multiple Development Processes

Supports Code First, Model First, and Database First approaches, allowing developers to choose the most fitting strategy for designing their data models and databases.

Cross-Database Compatibility

Works with various database engines such as SQL Server, MySQL, PostgreSQL, SQLite, Firebird, and Oracle using the same data access code.

Dynamic Data Model Management

Enables defining and modifying persistent class structures at runtime through an XML-based metadata model alongside standard .NET reflection-based mapping.

Advanced Querying Capabilities

Allows querying the data store using object-oriented syntax, LINQ via the XPQuery API, and direct SQL queries, supporting complex sorting, filtering, and aggregation operations.

Performance Optimization Features

Includes bindable collections for UI controls, server-side data shaping using Server Mode, asynchronous data loading, object and query caching, and profiling tools to diagnose performance bottlenecks.

Robust Transaction and Concurrency Support

Offers manual and automatic transaction management with Unit of Work patterns, optimistic concurrency control, and deferred deletion of objects for reliable data integrity.

Design-Time Tools and Wizards

Includes a data model designer and a wizard for reverse-engineering existing databases to generate persistent classes and map stored procedures.

Flexible Persistent Object Definition

Allows creating persistent objects by inheriting from base classes or implementing interfaces, supporting custom key fields, property change notifications, lazy loading, and calculated properties.

Distributed and Cloud-Ready

Supports hosting data in cloud databases like SQL Azure and publishing data through web services such as WCF and OData, facilitating modern distributed application architectures.

Product Compatibility

Review the details below to ensure this product is supported within your environment.

Component Type

  • .NET

.NET Version

  • .NET 10 LTS
  • .NET 9 STS
  • .NET 8 LTS
  • .NET 4.8 or earlier

.NET Platform

  • .NET Assembly
  • .NET Class

IDE Support

  • Rider
  • Visual Studio