Click here to Skip to main content
11,721,289 members (83,688 online)
Click here to Skip to main content
Add your own
alternative version

Creating View-Switching Applications with Prism 4

, 6 Mar 2011 CPOL 158.7K 13.1K 159
How to get a Prism 4 line-of-business application up and running, using WPF and the Unity Dependency Injection (DI) container.
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;

namespace Prism4Demo.ModuleB.Commands
{
    public class ShowModuleBViewCommand : ICommand
    {
        #region Fields

        // Member variables
        private ModuleBTaskButtonViewModel m_ViewModel;

        #endregion

        #region Constructor

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

        #endregion

        #region ICommand Members

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

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

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

            /* We invoke the NavigationCompleted() callback method in the next  
             * navigation request since it is the last request we have to make. */

            // Show Workspace
            var moduleBWorkspace = new Uri("ModuleBWorkspace", UriKind.Relative);
            regionManager.RequestNavigate("WorkspaceRegion", moduleBWorkspace, 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("ModuleB");
        }

        #endregion
    }
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

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

Share

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.

You may also be interested in...

| Advertise | Privacy | Terms of Use | Mobile
Web04 | 2.8.150901.1 | Last Updated 6 Mar 2011
Article Copyright 2011 by David Veeneman
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid