Josh Smith's Advanced MVVM PDF

By Josh Smith

This publication is for WPF and Silverlight builders trying to take their Model-View-ViewModel talents to the following point. It stories how the MVVM layout development was once used to create a enjoyable and addictive online game that offers a chic person adventure. learn this publication to realize insights from Josh Smith, an famous professional in WPF, Silverlight, and MVVM, on the way to appropriately layout advanced View and ViewModel architectures. the best way to aid limitless undo, coordinate lively transitions, keep watch over modal conversation packing containers from a ViewModel, and masses extra.

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Close(); } The last piece of the puzzle is how GameOverViewModel’s Close method works. When the outro animation finishes that method is invoked, causing GameOverView to disappear. The GameOverViewModel notifies BubbleBurstViewModel that it wants to close by raising its RequestClose event. ///

/// Closes the game-over dialog. Empty); } } As we saw in the previous section, when that event is raised BubbleBurstViewModel sets its GameOver property to null. ’ At that point the user can start playing another game of BubbleBurst.

We saw how it is opened and closed by a DataTrigger. We also reviewed small snippets of event handling code in the GameOverView that allowed the dialog to be animated away while a new game started filling the window with bubbles. At no point did we see any ViewModel objects referencing UI elements. The BubbleBurst user interface could be replaced with a whole new set of Views and no changes would be necessary in the ViewModel layer (unless those new Views required functionality not currently available).

The game-over dialog is shown below: When the game-over dialog appears on the screen it bounces into place. If the user clicks on ‘PLAY AGAIN’, the dialog flies into the background while a new set of bubbles fills the window. ” The intro animation begins when the GameOverView’s Visibility is set to Visible, and the outro animation begins in response to some code that executes when the user clicks the ‘PLAY AGAIN’ Hyperlink control. Opening the GameOver Dialog GameOverView is a user control that resides in the top-level View, called BubbleBurstView.

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Advanced MVVM by Josh Smith


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