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SignalR Blueprints

You're reading from   SignalR Blueprints Build real-time ASP.NET web applications with SignalR and create various interesting projects to improve your user experience

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Product type Paperback
Published in Feb 2015
Publisher
ISBN-13 9781783983124
Length 244 pages
Edition 1st Edition
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Author (1):
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Einar Ingerbrigsten Einar Ingerbrigsten
Author Profile Icon Einar Ingerbrigsten
Einar Ingerbrigsten
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Toc

Table of Contents (12) Chapters Close

Preface 1. The Primer FREE CHAPTER 2. Overheating the Discussion 3. Extra! Extra! Read All About It! 4. Can You Measure It? 5. What Line of Business Are You In? 6. An Architectural Taste 7. The Three Screens – Mobile First 8. Putting the X in .NET – Xamarin 9. Debugging or Troubleshooting 10. Hosting and Deployment Index

Decoupling it all


MVVM is a pattern for client development that became very popular in the XAML stack, enabled by Microsoft based on Martin Fowler's presentation model (http://martinfowler.com/eaaDev/PresentationModel.html). Its principle is that you have a ViewModel that holds the state and exposes behavior that can be utilized from a view. The view observes any changes of the state the ViewModel exposes, making the ViewModel totally unaware that there is a view. The ViewModel is decoupled and can be put in isolation and is perfect for automated testing. As part of the state that the ViewModel typically holds is the model part, which is something it usually gets from the server, and a SignalR hub is the perfect transport to get this. It boils down to recognizing the different concerns that make up the frontend and separating it all. This gives us the following diagram:

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