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Migrate from Basic to MVVM and MEF Composable Patterns for a Silverlight Application - Part 3

, 3 May 2012 CPOL
The article series shows how to upgrade a Silverlight application having basic patterns to the MVVM and MEF composable patterns with easy approaches and detailed coding explanations.
MigrateToMvvmMef-Part1_Src.zip
MigrateToMvvmMef-Part1_Src
ProductApp.Common
Bin
Release
Constants
ModuleServices
obj
ProductApp.Common.csproj.user
Properties
ProductApp.Main
Assets
Bin
Release
obj
ProductApp.Main.csproj.user
Properties
Views
ProductApp.suo
ProductApp.Views
Assets
Bin
Release
obj
ProductApp.Views.csproj.user
Properties
ProductApp.Web
bin
ClientBin
obj
ProductApp.Web.csproj.user
Properties
ProductRiaLib
ProductRiaLib.Web
App_Data
bin
Debug
EntityFramework.dll
Microsoft.ServiceModel.DomainServices.EntityFramework.dll
Release
Models
obj
ProductRiaLib.Web.csproj.user
Properties
Services
Bin
Release
obj
ProductRiaLib.csproj.user
Properties
MigrateToMvvmMef-Part2_Src.zip
MigrateToMvvmMef-Part2_Src
ProductApp.Common
Bin
Release
Constants
EventArguments
Models
ModuleServices
obj
ProductApp.Common.csproj.user
Properties
ProductApp.Main
Assets
Bin
Release
obj
ProductApp.Main.csproj.user
Properties
ViewModels
Views
ProductApp.Models
Bin
Release
obj
ProductApp.Models.csproj.user
Properties
ProductApp.suo
ProductApp.ViewModels
Bin
Release
obj
ProductApp.ViewModels.csproj.user
Properties
ProductApp.Views
Assets
Bin
Release
obj
ProductApp.Views.csproj.user
Properties
ProductApp.Web
bin
ClientBin
obj
ProductApp.Web.csproj.user
Properties
ProductRiaLib
ProductRiaLib.Web
App_Data
bin
Debug
EntityFramework.dll
Microsoft.ServiceModel.DomainServices.EntityFramework.dll
Release
Models
obj
ProductRiaLib.Web.csproj.user
Properties
Services
Bin
Release
obj
ProductRiaLib.csproj.user
Properties
_Assemblies
GalaSoft.MvvmLight.SL5.dll
System.Windows.Interactivity.dll
MigrateToMvvmMef-Part3_Src.zip
MigrateToMvvmMef-Part3_Src
AnotherXap.Models
AnotherXap.Models.csproj.user
Bin
Release
obj
Properties
AnotherXap.ViewModels
AnotherXap.ViewModels.csproj.user
Bin
Release
obj
Properties
AnotherXap.Views
AnotherXap.Views.csproj.user
Assets
Bin
Release
obj
Properties
ProductApp.Common
Bin
Release
Constants
EventArguments
Models
ModuleServices
obj
ProductApp.Common.csproj.user
Properties
SaveState
ProductApp.Main
Assets
Bin
Release
Models
obj
ProductApp.Main.csproj.user
Properties
ViewModels
Views
ProductApp.Models
Bin
Release
obj
ProductApp.Models.csproj.user
Properties
ProductApp.suo
ProductApp.ViewModels
Bin
Release
obj
ProductApp.ViewModels.csproj.user
Properties
ProductApp.Views
Assets
Bin
Release
obj
ProductApp.Views.csproj.user
Properties
ProductApp.Web
bin
ClientBin
obj
ProductApp.Web.csproj.user
Properties
ProductRiaLib
ProductRiaLib.Web
App_Data
bin
Debug
EntityFramework.dll
Microsoft.ServiceModel.DomainServices.EntityFramework.dll
Release
Models
obj
ProductRiaLib.Web.csproj.user
Properties
Services
Bin
Release
obj
ProductRiaLib.csproj.user
Properties
_Assemblies
GalaSoft.MvvmLight.SL5.dll
System.Windows.Interactivity.dll
using System;
using System.Windows;
using System.Windows.Controls;
using System.ComponentModel;
using ProductApp.Common;

namespace ProductApp.Main.Views
{
    public partial class MainPage : UserControl
    {
        private ModuleCatalogService _catalogService = ModuleCatalogService.Instance; 
        
        public MainPage()
        {
            InitializeComponent();
        }

        // For test before MVVM implementation.
        private void LinkButton_Click(object sender, RoutedEventArgs e)
        {
            // Call to load the xap           
            string xapUri = "/ClientBin/ProductApp.Views.xap";
            _catalogService.AddXap(xapUri, arg => ProductApp_OnXapDownloadCompleted(arg));
        }

        // For test before MVVM implementation.
        private void ProductApp_OnXapDownloadCompleted(AsyncCompletedEventArgs e)
        {
            // Inject the module after loading xap completed
            MainContent.Content = _catalogService.GetModule(ModuleID.ProductListView);

            // UI - set active link
            VisualStateManager.GoToState(linkButton_ProductList, "ActiveLink", true);
        }

    }
}

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About the Author

Shenwei Liu

United States United States
Shenwei is a software developer and architect, and has been working on business applications using Microsoft and Oracle technologies since 1996. He obtained Microsoft Certified Systems Engineer (MCSE) in 1998 and Microsoft Certified Solution Developer (MCSD) in 1999. He has experience in ASP.NET, C#, Visual Basic, Windows and Web Services, Silverlight, WPF, JavaScript/AJAX, HTML, SQL Server, and Oracle.

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