Please try dotConnect for PostgreSQL version 4.00 Beta that is available for download now.
This beta version introduces the following features:
- PostgreSQLDirect .NET renamed to dotConnect for PostgreSQL
- Supported LINQ to PostgreSQL
- Added Schema Modeler for LINQ to PostgreSQL
- Added free Express Edition with basic connectivity features
- Added Source Edition with source code of run time assemblies (Devart.Data.dll and Devart.Data.PostgreSql.dll)
- Supported UUID type
- Supported REF Cursors
- Support for .NET Framework 1.x is discontinued
- Fixed type mapping in models with inherited entities
- NULLs can now be used in typed expressions
Devart development team
http://www.devart.com/pgsqlnet/