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A Prism 4 Application Checklist

, 5 Apr 2011
The article provides a step-by-step explanation of how to set up a Prism application.
Prism4Demo.zip
Prism4Demo
Prism4Demo.Common
BaseClasses
bin
Events
obj
Debug
TempPE
Prism4Demo.Common.csproj.user
Properties
Prism4Demo.Library
FsTools
FsTaskButton.dll
Prism
Microsoft.Practices.Prism.dll
Microsoft.Practices.Prism.UnityExtensions.dll
Microsoft.Practices.ServiceLocation.dll
Microsoft.Practices.Unity.dll
Ribbon
RibbonControlsLibrary.dll
Prism4Demo.ModuleA
bin
Commands
obj
Debug
TempPE
Views
Prism4Demo.ModuleA.csproj.user
Properties
Settings.settings
Services
ViewModels
Views
Images
LargeIcon.png
module_a.png
SmallIcon.png
Prism4Demo.ModuleB
bin
Commands
obj
Debug
TempPE
Views
Prism4Demo.ModuleB.csproj.user
Properties
Settings.settings
Services
ViewModels
Views
Images
LargeIcon.png
module_b.png
SmallIcon.png
Prism4Demo
bin
obj
x86
Debug
TempPE
Views
Prism4Demo.csproj.user
Properties
Settings.settings
Services
Utility
ViewModels
Views
Images
LargeIcon.png
new.png
open.png
print.png
ribbon.png
save.png
SmallIcon.png
using System;
using System.Windows.Input;
using Microsoft.Practices.Prism.Events;
using Microsoft.Practices.Prism.Regions;
using Microsoft.Practices.ServiceLocation;
using Prism4Demo.Common.Events;
using Prism4Demo.ModuleA.ViewModels;

namespace Prism4Demo.ModuleA.Commands
{
    public class ShowModuleAViewCommand : ICommand
    {
        #region Fields

        // Member variables
        private ModuleATaskButtonViewModel m_ViewModel;

        #endregion

        #region Constructor

        /// <summary>
        /// Default constructor.
        /// </summary>
        public ShowModuleAViewCommand(ModuleATaskButtonViewModel viewModel)
        {
            m_ViewModel = viewModel;
        }

        #endregion

        #region ICommand Members

        /// <summary>
        /// Whether the ShowModuleAViewCommand is enabled.
        /// </summary>
        public bool CanExecute(object parameter)
        {
            return true;
        }

        /// <summary>
        /// Actions to take when CanExecute() changes.
        /// </summary>
        public event EventHandler CanExecuteChanged
        {
            add { CommandManager.RequerySuggested += value; }
            remove { CommandManager.RequerySuggested -= value; }
        }

        /// <summary>
        /// Executes the ShowModuleAViewCommand
        /// </summary>
        public void Execute(object parameter)
        {
            // Initialize
            var regionManager = ServiceLocator.Current.GetInstance<IRegionManager>();

            // Show Ribbon Tab
            var moduleARibbonTab = new Uri("ModuleARibbonTab", UriKind.Relative);
            regionManager.RequestNavigate("RibbonRegion", moduleARibbonTab);

            // Show Navigator
            var moduleANavigator = new Uri("ModuleANavigator", UriKind.Relative);
            regionManager.RequestNavigate("NavigatorRegion", moduleANavigator);

            /* We invoke the NavigationCompleted() callback 
             * method in our final  navigation request. */

            // Show Workspace
            var moduleAWorkspace = new Uri("ModuleAWorkspace", UriKind.Relative);
            regionManager.RequestNavigate("WorkspaceRegion", moduleAWorkspace, NavigationCompleted);
        }

        #endregion

        #region Private Methods

        /// <summary>
        /// Callback method invoked when navigation has completed.
        /// </summary>
        /// <param name="result">Provides information about the result of the navigation.</param>
        private void NavigationCompleted(NavigationResult result)
        {
            // Exit if navigation was not successful
            if (result.Result != true) return;

            // Publish ViewRequestedEvent
            var eventAggregator = ServiceLocator.Current.GetInstance<IEventAggregator>();
            var navigationCompletedEvent = eventAggregator.GetEvent<NavigationCompletedEvent>();
            navigationCompletedEvent.Publish("ModuleA");
        }

        #endregion
    }
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

David Veeneman
Software Developer (Senior) Foresight Systems
United States United States
David Veeneman is a financial planner and software developer. He is the author of "The Fortune in Your Future" (McGraw-Hill 1998). His company, Foresight Systems, develops planning and financial software.

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