Simple.Data 2.0

Today I started work on the next version of Simple.Data. Even though there hasn’t been an actual, official release of 1.0 yet. That’s something I hope to rectify in the next week or so, by fixing the few remaining issues and hoping the documentation is sufficient, although not exhaustive.

The initial work on 2.0 involves addressing some of the issues that have appeared as a result of a code-base growing organically from something that started out much less ambitious. These changes will clean the code up to provide a better base to build on, and hopefully to make it easier to write adapters for a wider range of back-end data platforms. I’ll also be building a RavenDB adapter, not because RavenDB’s own API needs improving upon, but because I’d like RavenDB to be one of the platforms that can be swapped in to an application built using Simple.Data.

Once that’s done, there are a few headline features for the 2.0 release:

Async support

Async’s strong point is non-blocking I/O operations, so getting it into Simple.Data is a no-brainer. I’ve got to work out the details, but you should be able to await everything.

Batch operations

You’ll be able to create a batch of operations and execute it with a single connect-run-disconnect process. This will also support adding arbitrary Actions and Funcs into the chain of operations to be run between database calls, using previously-returned data.

Metadata exposed

You’ll be able to access all the database schema information from the underlying database, without worrying about differing INFORMATION_SCHEMA or sys.* or what-have-you. Where appropriate, you’ll also be able to connect to a server and get database information too.


There are lots of things that could be added to Simple.Data that would probably stop it being quite so Simple, so I’m going to add various hooks and extension points to allow either me or other people to add this stuff. Adapter authors will be able to add custom “methods” to the Database or Table objects, and you’ll be able to check whether those methods are available at runtime.

I might also refactor out some of the more esoteric functionality that Simple.Data currently has into plug-ins. We’ll see.

Better WithStuff

The With operations on queries will be getting much more powerful, allowing complex object graphs to be populated in a single call. I’m also looking at allowing object graphs to be saved with a single call, if that’s actually possible.

Oh, and IntelliSense

It’s not possible to glom onto the built-in IntelliSense in Visual Studio and augment it. Believe me, I tried. All you can do is completely replace it. Which, obviously, is a nightmare. But with the upcoming release of Roslyn (I am assured there will be a new preview release shortly after VS2013’s full release), I suspect replacing IntelliSense is going to be a lot easier.

It’s still a sufficiently big undertaking that I’m not going to just build it for Simple.Data. My plan is to create an open source IntelliSense replacement that is designed from line one to be extensible by anyone who wants to, and then to build a Simple.Data extension for it. I’m hoping I can make the engine for that extension modular enough to be able to create ReSharper and CodeRush completion plug-ins, too.

If you’re interested in contributing to that project, particularly on the UI/UX side of things, I’d be grateful for any help.

.NET 4.5

The biggest other change is that I’m pretty sure 2.0 is going to be .NET 4.5 (and up) only. With all the async/await stuff, maintaining compatibility with 4.0 will likely require too much time and effort, and will probably compromise the code and performance.


If you’re the author of an adapter or provider for Simple.Data and you don’t want to continue to maintain that package through the 2.0 release, please let me know and we can bring it into the central fold. You’ll continue to be credited as the original author for the life of the package.


So, if you’ve got any comments or anything about any of that, please leave them below or reach out to me on Twitter.


  1. Awesome, can’t wait!

  2. That’s great! We didn’t used Simple.Data only because of missing async support. When we can expect the second version to be released?

  3. hugo forte says:

    Would be beautiful! Any thoughts on the timeline to get 1.0 out?

  4. I ‘m still waiting now….my 2.0 Ver?where r u???????!!!!!!!!!!!!!!!!!!!!

    • Sorry, the work that I was going to do for a client ended up not happening. However, some new development work of my own is definitely starting very soon and will be using Simple.Data, and is going to require a bunch of changes and improvements, so it’s definitely still on. Expect something over the next quarter, for sure.

  5. gooogle2014 says: 0.19 can’t support TraceListener? Output always empty,but is OK/ is that a bug?? how to fix the 0.19 bug,for that can not support TraceListener

  6. Does it support Lambda?


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