The Progress Bar - DevExpress XPF Blog

Keep 'em coming!  I'm enjoying this series.  While I'm generally familiar with the subject matter, I'm finding tidbits of useful information :-)

Totally agree with Boris... this serie offers a wider perspective about the XPO  model and the relation that it has with XAF. Please.. keep' em comming.. with more real implementations.

Best Regards

This is pretty great. I've yet to really delve into the world of Xpo, but I've actually watched this video 3 times already just to get a basic handle on it. Maybe this weekend I'll work on a little Xpo app just to get myself more comfortable with it.

Here's what I don't like...

You break a major XPO best practices recommendation in this sample.

5. Avoid the use of a default session.

Awesome

Does XPO now competes with LINQ to SQL or LINQ to Entities? they have a designer in VS to generate the object model then query by LINQ lang, how is this competes with XPO, im confused, can anyone explain

Thanks

This is just excellent. Superbly orchestrated videos, it's a shame you have nothing to back them up with.

Where is the source?

Hi Bassam,

> Does XPO now competes with LINQ to SQL or LINQ to Entities

No, it's the other way round :-)

There's a lot of common functionality in these products, although the focus is very different. Just one example: both LINQ to SQL and LINQ to Entities are bottom-up products, in that they expect you to work on the database layer a lot when it comes to designing and modifying the database - something that XPO assumes you're not really interested in. Because it focuses so much on the OO side of things, XPO has the advantage of targeting any number of different database backends from the same source code.

At the same time, there are several places where LINQ (to Objects, the base technology) can interface with XPO, so it's possible to query XPO through LINQ.

Hope this helps you out a bit!

Oliver