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MVVM is a commonly used design pattern for XAML-based applications (WPF, Silverlight, and now WinRT). I won’t go into a full description of the pattern, but I’d like to spend some time on a design issue I’ve encountered ever since I’ve started Silverlight/WinRT development. The issue Everybody will tell you: nowadays, for a good UX, animations are a must-have. XAML applications have a very powerful animation system based on storyboards, but it doesn’t fit well with MVVM. How so? One of the recommendation when using the MVVM pattern is to make a clear separation between the viewmodel and the view. The viewmodel should have noRead More →

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While the Windows 10 SDK is still unavailable, and will likely remain so until the Build event in April, Microsoft allowed developers at Mobile World Congress to briefly try an early preview of the SDK. Two novelties have been publicly revealed: StateTriggers and the RelativePanel. I’ll present in this post all the information I could gather about those two features. StateTriggers Anyone who has used Visual States, be it manually or using Blend, will probably agree: the syntax is unnecessarily verbose, and having to use a storyboard to change even simple properties quickly gets tedious. The situation has been going on for a while, but with universalRead More →