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ADO.NET Blog

The official source of information on Managed Providers, DataSet & Entity Framework from Microsoft

Migrating from LINQ to SQL to Entity Framework: Deferred Loading

Last week, we covered Eager Loading and how to migrate LINQ to SQL based code that took advantage of...

Author: dpblogs Date: 10/16/2008

Npgsql's ADO.NET Provider for PostgreSQL Supports the ADO.NET Entity Framework!

I always enjoy making announcements regarding external providers releasing their Entity...

Author: dpblogs Date: 10/14/2008

Migrating from LINQ to SQL to Entity Framework: Eager Loading

Since the release of the Entity Framework, we have received a number of requests for details and...

Author: dpblogs Date: 10/08/2008

PDC 2008 - Los Angeles, CA - Oct. 27-30

Microsoft's premier developer event, the Professional Developer Conference, is almost here. PDC 2008...

Author: dpblogs Date: 09/11/2008

SQLite's ADO.NET Provider Supports the ADO.NET Entity Framework!

I spoke too soon, or actually a little too late. Robert Simpson at Phoenix Software Solutions...

Author: dpblogs Date: 09/06/2008

Devart's New Providers Support the ADO.NET Entity Framework!

It is my pleasure to announce the first (to the best of my knowledge) external providers to support...

Author: dpblogs Date: 09/05/2008

Introducing Table-Valued Parameters - Part 1

Hey everyone! I am Himanshu. I am a program manager in the ADO.Net team. Today I am going to talk...

Author: dpblogs Date: 08/15/2008

Entity Framework RTM Breaking Changes

There were a number of changes to the Entity Framework and the designer between Visual Studio 2008...

Author: dpblogs Date: 08/12/2008

Updated Entity Framework Samples for RTM

We have just updated a number of Entity Framework samples, including two sample providers, to work...

Author: dpblogs Date: 08/12/2008

What's new in the VS 2008 SP1?

Visual Studio 2008 SP1 introduces significant new functionality as ADO.NET expands and evolves to...

Author: dpblogs Date: 08/11/2008

Third Party Provider Support for the Entity Framework RTM

Today we announced the release of the ADO.NET Entity Framework and ADO.NET Data Services in the...

Author: dpblogs Date: 08/11/2008

RTM is Finally Here!

The Entity Framework and the Entity Designer have Released! Today marks the official RTM of Visual...

Author: dpblogs Date: 08/11/2008

Update Model – a Question of Identity – Part 2 of 3

This article is Part 2 of 3 – please see...

Author: dpblogs Date: 07/22/2008

Update Model – a Question of Identity – Part 1 of 3

I propose to explain the reason behind some of the oddities of the “Update Model from...

Author: dpblogs Date: 07/21/2008

EDM Tools | Options (Part 4 of 4)

IntroductionIn parts one, two and three of this four-part series, we discussed the file differences...

Author: dpblogs Date: 07/14/2008

EDM Tools | Options (Part 3 of 4)

Introduction In parts one and two of this four-part series, we discussed the file differences...

Author: dpblogs Date: 06/26/2008

New sample provider demonstrates Oracle connectivity

As noted on Jaroslaw Kowalski's blog, we have released a new flavor of the ADO.NET Entity Framework...

Author: dpblogs Date: 06/24/2008

Entity Framework V2 - Transparency in the design process

Today marks the first day of engineering for the ADO.NET Entity Framework V2.0, and the team has...

Author: dpblogs Date: 06/23/2008

EDM Tools | Options (Part 2 of 4)

Introduction In part one of this series, we looked at our motivation for the series, and we...

Author: dpblogs Date: 06/20/2008

EDM Tools | Options (Part 1 of 4)

Introduction The Entity Data Model (EDM) Tools team has done a lot of work to enable a productive...

Author: dpblogs Date: 06/20/2008

How to use a T4 template for View Generation

Background To set the stage for this article, do take a look at Exploring the Performance of the...

Author: dpblogs Date: 06/20/2008

Tutorial: Entity Data Source Control

Last month we announced the beta release of Service Pack 1 for Visual Studio 2008. This release...

Author: dpblogs Date: 06/18/2008

Entity Framework Provider Updates

Greetings from TechEd! We've updated the ADO.NET Entity Framework Sample Provider for .NET 3.5 SP1...

Author: dpblogs Date: 06/05/2008

Updated Entity Framework Samples

Looking for Entity Framework Samples that work with VS2008 SP1 Beta? You can check out our New and...

Author: dpblogs Date: 05/27/2008

Going to TechEd? Drop by and say Hi!

Are you going to be at TechEd Developer in Orlando June 3rd - 6th? Stop by and say Hi to the ADO.NET...

Author: dpblogs Date: 05/23/2008

How Referential Integrity Works

Referential integrity is a database constraint that ensures consistency between coupled tables....

Author: Elisa Flasko - MSFT Date: 05/22/2008

How does Referential Integrity Work?

This article talks about details of EF’s support for referential integrity constraints. It...

Author: Elisa Flasko - MSFT Date: 05/22/2008

How Do I... ? New Entity Framework Videos

Looking for a brief introduction to the Entity Framework? The Entity Data Source? Check out our...

Author: dpblogs Date: 05/20/2008

Entity Framework Breaking Changes - Visual Studio 2008 & .NET 3.5 SP1 Beta

For the release of SP1 Beta, several breaking changes were made to the Entity Framework. Below is a...

Author: Elisa Flasko - MSFT Date: 05/14/2008

Entity Framework Breaking Changes - SP1 Beta

There were a number of changes to the Entity Framework between Beta 3 and the Visual Studio 2008 SP1...

Author: dpblogs Date: 05/14/2008

Can't find the Entity Data Source?

If you upgrade the RTM version of Visual Studio 2008 with the SP1 service pack distribution, the...

Author: dpblogs Date: 05/14/2008

What's New in the SP1 Beta for LINQ to SQL?

Monday we announced the availability of the Visual Studio 2008 and .NET Framework SP1 Beta releases,...

Author: dpblogs Date: 05/14/2008

What's New in the SP1 Beta?

This morning we announced the availability of the Visual Studio 2008 and .NET Framework SP1 Beta...

Author: dpblogs Date: 05/13/2008

Visual Studio 2008 SP1 Beta & .NET 3.5 SP1 Beta

We are very excited to announce that .NET 3.5 SP1 Beta 1 and Visual Studio 2008 SP1 Beta 1 are now...

Author: dpblogs Date: 05/12/2008

Recent ADO.NET Entity Framework provider news - Demos and downloads

Here are a few quick announcements about ADO.NET providers supporting the Entity Framework. Enjoy!...

Author: dpblogs Date: 05/07/2008

Program Manager openings in Data Programmability in 2008

We’re gearing up for the next release of the SQL Server, and we are looking for people that...

Author: dpblogs Date: 04/16/2008

Entity Framework & ADO.NET Data Services to Ship with VS 2008 SP1 & .NET 3.5 SP1

It's settled! The Entity Framework (and the Entity Designer) along with ADO.NET Data Services will...

Author: dpblogs Date: 04/09/2008

Connecting to Pre-Release Versions of SQL Server 2008 – Part Deux

Since posting on the topic of design-time and runtime connectivity to pre-release versions of SQL...

Author: dpblogs Date: 04/07/2008

Update Model From DB

The “Update Model from Database” feature in the CTP2 of the EDM designer is greatly improved in the...

Author: dpblogs Date: 04/01/2008

ADO.NET Entity Framework Performance Comparison

There have been a few questions from the last performance blog post about how the Entity Framework...

Author: dpblogs Date: 03/27/2008

Stored Procedure Mapping

In this blog post, we’d like to walk through the EDM designer’s support for specifying insert,...

Author: dpblogs Date: 03/26/2008

Extending Lightweight Transactions in SqlClient

We’ve done some work with SqlClient’s System.Transaction support for Sql Server 2008. To...

Author: MSDN Archive Date: 03/25/2008

Cool Entity Framework Sample

Samir Bajaj, a developer on the ADO.NET Team recently put together a very cool Drawing Editor sample...

Author: dpblogs Date: 03/14/2008

Coming soon to LINQ to SQL

LINQ to SQL went gold a few months ago with the release of Visual Studio 2008 and .NET Framework...

Author: dpblogs Date: 02/21/2008

Exploring the Performance of the ADO.NET Entity Framework – Part 2

Query Performance During this post I’ll show a few patterns on how to improve the query...

Author: dpblogs Date: 02/11/2008

Exploring the Performance of the ADO.NET Entity Framework - Part 1

Performance Matters No matter what type of application you are developing at some point in the...

Author: dpblogs Date: 02/04/2008

ADO.NET performance improvements with the .NET Framework 2.0 SP1

With the release of Visual Studio 2008 and the .NET Framework 2.0 SP1, there are some bug fixes and...

Author: dpblogs Date: 01/28/2008

Programming LINQ and the ADO.NET Entity Framework Webcast

Check out our upcoming webcast by Mike Pizzo on LINQ and the Entity Framework. Programming LINQ and...

Author: dpblogs Date: 01/28/2008

SampleEdmxCodeGenerator sources

As a follow up to my previous article on Customizing Code Generation in the ADO.NET Entity Designer,...

Author: dpblogs Date: 01/24/2008

Customizing Code Generation in the ADO.NET Entity Designer

In previous posts, I’ve described CSDL annotations, how to extract CSDL from EDMX and...

Author: dpblogs Date: 01/24/2008

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