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Here is the code from the demos I did yesterday at the SweNug meeting in Linköping. Or at least the pre-made code that I didn’t invent while talking…which I hope wasn’t too much…

Code: Xaml.Demos.zip (69.20 kb)

Anyhow, download it and walk through it, and ask any questions that might pop-up.

The video will be available later on when Pierre has figured out a way to get it “produced”…

Cheers!

Yesterday I was invited to speak in front of a bunch of really sharp guys attending the Lead Enterprise Architecture Program, LEAP, at Microsoft here in Stockholm. The topic of the day was how to share code between projects targeting multiple frameworks/platforms. Basically “how can we share code between projects aimed at WP7, Windows 8, Silverlight and WPF” in a useful way, limiting the duplication of code as well as maintenance.

Most of my presentation revolved around a sample I had written to target all platforms. It is a very simple application, but still shows that it is very possible to get it to work.

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There are several “missing” features in Silverlight that people keep bringing up, or keep trying to find solutions for. One of them is the template selector, or DataTemplateSelector class to be more specific.

The DataTemplateSelector has a single responsibility, which is the way it should be. It is responsible for returning a DataTemplate based an object. Generally, it is used in lists, where the data template can be selected based on the bound item, and thus give different templates to different kind of objects in the list.

In Silverlight, this is not possible out of the box, and instead requires us to create multiple UI controls, and hide and show them using data binding. This approach works, but it easily becomes heavy and complicated, which is why I want a template selector that works…

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A question I keep running into when I speak about XAML-based application developer is how the developer/designer workflow should work. I don’t know if the question is common in general, or if it is because people feel that I’m not only passionate about coding, but also about design.

I have spent quite a lot of time thinking about how this workflow should work when working with XAML. In other technologies, I believe that the flow is much harder to get going, and I believe it requires more steps. In the “XAML world”, it should be a lot easier. The separation between functionality and design is pretty clear. And this separation should enable quite a well working flow.

Before I get into how I see it, I want to add a disclaimer… I have not been able to try this out in the real world as much as I would have liked. Mainly because I, in most cases, play all the roles. Or at least manage everything from XAML to code, with visuals coming from a designer.

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