Tag Archives: Silverlight

Commands versus Event Triggers in MVVM

Recently I’ve received some questions from the Simple MVVM Toolkit’s discussion forum on when to use commands versus Blend-style event triggers. For several reasons I tend to favor event triggers over commands in most scenarios, especially for Silverlight applications. Download … Continue reading

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Simple MVVM Toolkit: Unit Testing with Dependency Injection and MEF

One of the main benefits of using the MVVM (Model, View, ViewModel) design pattern is to support better testability.  Having to click through screens to test an application can be tedious and time-consuming, and it may not provide good code … Continue reading

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Simple MVVM Toolkit: Feature Rich with WPF and WP7 Support

I’ve rounded out the feature set of my Simple MVVM Toolkit to include a Message Bus (also known as an event aggregator or mediator) for loosely coupled communication among view-models and to support MEF (Managed Extensibility Framework0 for dependency injection … Continue reading

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Easier Async for Silverlight Apps using MVVM

It makes sense to execute long-running tasks on a background thread, in order to keep the UI responsive by not tying up the main thread.  However, as is the case with other UI frameworks such as Windows Forms or WPF, … Continue reading

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Tackling the Problem of Modal Dialogs in MVVM

One of the first issues you’ll run into when wading into the waters of MVVM is how to display model dialogs to the user while executing code in the view-model.  Popping up a dialog, such as a MessageBox or a … Continue reading

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Type-Safe Two-Way Data Binding with INotifyPropertyChanged

Anyone who’s developed a UI application using Windows Forms, WPF or Silverlight is probably aware that you have to implement the INotifyPropertyChanged interface to get two-way data binding between UI elements and an underlying data source. The problem is that … Continue reading

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Simple MVVM Toolkit Improvements: Documentation, Features, Sample Apps

I’ve released a new version of my Simple MVVM Toolkit for Silverlight that has improved documentation, a bunch of new features and additional sample applications.  The emphasis of the toolkit is simplicity – not in the sense that it’s rinky-dink … Continue reading

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