Nearly two years ago, I explained how to force WPF to cache images while loading, in order to not lock the underlying image file while being displayed. Now I’ve stumbled across a similar problem in Windows Store Apps: When populating…
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The short story: In some of my ViewModels, I’m not able to subscribe to ReactiveUI Commands although all other Reactive-specific code works, while in others the .Subscribe(…) method works properly. The long story: The context: An MVVM project based on…
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Images displayed within a Windows Store App are generally cached, in order to reduce data transfer (in case of online images) and rendering effort. This caching is done automatically by the framework, which is a good thing as developers need…
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The short story: ReSharper’s unit test tools are there to make a developer’s life easier by decorating test cases with matching icons and providing shortcuts to commonly used functions. In some cases, however, they are just misleading… The long story:…
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Even after having been around for several years by now, the Windows Store Platform (and its WinRT and UWP programming frameworks) is still not as complete and comfortable to use as the WPF and Silverlight platforms. One of the numerous…
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Let’s enhance our Validation Behavior to make it ready for use in real-life applications! Styling: The first thing we should get rid of is the fixed color values defined within the behavior’s TextChanged event handler method. Instead, we can define…
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In this blog post, I’d like to propose a solution to the missing data format validation in Store Apps, as discussed in part #1. In order to build a reusable solution that can be referenced by any TextBox control, we’re…
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Input validation is an important aspect of form-driven applications, and certain MVVM mechanisms allow us to incorporate easy data validation into our apps – e.g., define a CanExecute condition on any ViewModel command to detect invalid data while being entered,…
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Have you ever experienced the following error message popping up in Visual Studio, instead of starting the App to debug? This situation mostly occurs when starting the UWP part of a Xamarin.Forms project, but is not limited to this scenario….
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The problem: Similar to WPF Windows, for a Store app’s Page we can set Width, Height, MinWidth, and MinHeight attributes. However, in contrast to WPF, the Page.Width and Page.Height attributes only affect the size of the container that contains all…
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