A common occurrence in MVVM development is having calculated properties on your ViewModel. Calculated properties are often put on the ViewModel in order to avoid putting that logic in the UI code, as well as provide convenient databinding. For example, … Continue reading
One of the biggest features of .NET MVVM development is the ease of data-binding between data objects and UI controls. The mechanism that enables that feature is the INotifyPropertyChanged interface, which has a PropertyChanged event. When an INotifyPropertyChanged implementation (ViewModel) … Continue reading
This post is mostly copied from Introducing MVVM Command Wirer Wiring up Commands in MVVM apps is painful, because you’ll often have 4 discrete blocks of code relating to a single command: The Command property on the ViewModel A Func<bool> … Continue reading
One of the things that bugs me about C# MVVM development is how important ICommands are, yet no standard/reference implementation is provided in the BCL. It’s practically a rite of passage for C# devs to write a half-assed, fragile, and … Continue reading
I’ve been doing MVVM & XAML development for awhile now, and over time I’ve identified a couple of pain points – things that bug me, pet peeves, code smells – that are prevalent with MVVM development. So I thought i’d … Continue reading
Wiring up Commands in MVVM apps is painful, because you’ll often have 4 discrete blocks of code relating to a single command: The Command property on the ViewModel A Func<bool> or Predicate<T> which is referenced by Command.CanExecute An Action or … Continue reading
If you’re doing any significant amount of MVVM / XAML work, then I hope you’ll find these Visual Studio snippets useful. This first snippet creates a backing field, a property with a simple getter, and a setter that also calls … Continue reading
To paraphrase a saying, Some people have a problem, and immediately think “I know, I’ll use regular expressions!” – Now they have 2 problems. Regular expressions are powerful, but their complexity is exponentially proportional to what you need to do … Continue reading
It’s time I entered the modern era of blogging, so i’m migrating everything over from my old CommunityServer 2007 site to an Azure-hosted wordpress site. I began playing around with Azure thanks to my new job at Applied Information Sciences, … Continue reading
There’s pros and cons for having a tightly-controlled marketplace which requires app certification. The main advantage is that you have a better ratio of higher-quality, non-malware apps in the marketplace. The main disadvantage is that the certification process … Continue reading