Tag: MVVM

Combining Silverlight Navigation Framework and Prism to create MVVM Applications – Introduction

MVVM, Prism Navigation Framework, Programming, SilverlightSlobodan Pavkov18 Comments
This is introductory post for a series of posts where i will try to tackle the holy grail of MVVM applications - Navigation. To do this I will be using Prism from Microsoft's Patterns and Practices team (Silverlight version - latest drop) combined with Silverlight Navigation Framework and i will build small navigation framework on top of that...

Custom Silverlight TextBox control that immediately updates DataBound Text property in TwoWay binding

CustomControl, MVVM, Programming, Silverlight, WPFSlobodan Pavkov12 Comments
Standard Silverlight TextBox control is very useful but has one strange behavior: if you use TwoWay data binding and bind some property to controls Text property, when users type text into the control, this change is not propagated to the bound property until the control loses its focus. This can be very annoying if you have MVVM application and you have some kind of real-time filter that needs to update some data as-you-type. Problem is that TextBox control does not call BindingExpression.UpdateSource when its Text property is changed so we have to do that manually in order to fix this…
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