Download Developer's Guide to Microsoft Prism 4: Building Modular by Bob Brumfield PDF

By Bob Brumfield

This advisor presents every little thing you want to start with Prism and to take advantage of it to create versatile, maintainable home windows® Presentation origin (WPF) and Microsoft Silverlight® 4.0 functions. it may be difficult to layout and construct WPF or Silverlight customer functions which are versatile, maintainable, and that may evolve over the years according to altering specifications. all these purposes require a loosely coupled modular structure that enables person components of the appliance to be independently built and confirmed, permitting the applying to be transformed or prolonged afterward. also, the structure should still advertise testability, code re-use, and suppleness. Prism lets you layout and construct versatile and maintainable WPF and Silverlight purposes by utilizing layout styles that help very important architectural layout ideas, reminiscent of separation of matters and unfastened coupling. This consultant is helping those layout styles and describes how one can use Prism to enforce them on your WPF or Silverlight purposes. This consultant will aid you use Prism to enforce the Model-View-View-Model (MVVM) development on your software, and the way to exploit it in addition to instructions and interplay requests to encapsulate software good judgment and make it testable. it's going to assist you break up an software into separate practical modules that may speak via loosely coupled occasions, and the way to combine these modules into the general software. it's going to aid you dynamically build a versatile consumer interface by utilizing areas, and the way to enforce wealthy navigation throughout a modular program. Prism helps you to use those layout styles jointly or in isolation, looking on your specific software requisites.

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Additional info for Developer's Guide to Microsoft Prism 4: Building Modular MVVM Applications with Windows Presentation Foundation and Microsoft Silverlight

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If the component has a single set of dependencies that are integral to the type and will never change, it may not make sense to put it in the container. • Consider whether a component’s lifetime should be registered as a singleton or instance: • If the component is a global service that acts as a resource manager for a single resource, such as a logging service, you may want to register it as a singleton. • If the component provides shared state to multiple consumers, you may want to register it as a singleton.

It can include a collection of related components, such as application features including user interface and business logic, or pieces of application infrastructure, such as application-level services for logging or authenticating users. Modules are independent of one another but can communicate with each other in a loosely coupled fashion. Modular applications can make it easier for you to develop, test, deploy, and extend your application. For example, consider a personal banking application.

Event aggregator. Components in a composite application often need to communicate with other components and services in the application in a loosely coupled way. To support this, Prism provides the EventAggregator component, which implements a pub-sub event mechanism, thereby allowing components to publish events and allowing other components to subscribe to those events without either of them requiring a reference to the other. The EventAggregator is often used to allow components defined in different modules to communicate with each other.

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