Author: admin

Customs Fields at runtime for XAF

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This will be a really short post. When presented with a XAF challenge the first thing I do it is a quick search trough the support tickets to see if there is already an implementation that I can adapt to my needs. Most of the time I find something that I can use, but also most of the time I have to actually code it and run it to see if it is exactly what I need it.

If you are like me, you would love to have a visual before getting to deep and realizing I am on the wrong path. I also realize DevExpress receives tons of tickets daily so this is not feasible for them.

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A Gentle Introduction to XAF – My personal recipe

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As an advocate for XAF, XPO, Xamarin and Azure I am constantly reading articles, tutorials, youtube videos and anything I can get my hands on about those topics and a while back I read  a great article by Charlin Agramonte: Learning Xamarin Forms – The XamGirl personal recipe where she goes over her personal formula for learning Xamarin. I liked so much I even put it in my quick overview of XPO in Xamarin (expect part 2 and 3 coming soon) and got me thinking what a great way of jump start our learning process and having a lot of great content in a single place.

Well, this is my own formula for XAF development. 

Are you ready?

Let’s start!
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XPO and Xamarin 101. A Step by Step beginner’s guide. (Part 1)

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“Faith is taking the first step even when you don’t see the whole staircase.” – Martin Luther King

When I first started with XPO I could swear there was something magic involved in how it was handling my data. I had no idea what was going on, but I knew that if I derived my classes from XPObject  or BaseObject (if you use XAF), I automatically had my classes turned into tables in a database of my choosing, I had an autogenerated Built-in OID key,  Deferred Object Deletion, and Optimistic Locking. And honestly, that was all I care about. If I wanted to use a different database; it was as simple as changing my connection string.

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XPO ORM and Xamarin

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A quick overview of XPO in Xamarin.

With the current release of XPO v18.1, DevExpress has made XPO available free-of-charge. Xamarin has been open source and free for quite some time, and now with XPO for .NET Core / .NET Standard 2.0 finally out of Beta,  a world of possibilities and new exciting features/projects is opening to us.

Let’s review what exactly that means to us.

If you have used XPO in the past you know the great features it offers:

  • Transparent and Controllable Object Relational Mapping System
  • Bindable and Pageable Object Collections
  • Support for various DB engines (14 to be exact and you can always implement your own XPO connection provider)
  • Advanced Criteria System
  • And More…

Also, it is a mature product with great support that has been around for 15 years. Support is still a paid service but definitely worth it (ask around). Want to see how it compares to EF? Just take a quick look at this simple benchmark.

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