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A Sample Silverlight 4 Application Using MEF, MVVM, and WCF RIA Services - Part 1

, 7 Jul 2011
Part 1 of a series describing the creation of a Silverlight business application using MEF, MVVM Light, and WCF RIA Services.
IssueVisionforSilverlightSetup20110630.zip
IssueVision for Silverlight Setup
IssueVisionSetup.msi
setup.exe
IssueVision_for_Silverlight_setup.zip
IssueVisionSetup.msi
setup.exe
IssueVision_Silverlight20110630.zip
IssueVision.Silverlight
Assemblies
GalaSoft.MvvmLight.Extras.SL4.dll
GalaSoft.MvvmLight.SL4.dll
MenuControls.dll
System.Windows.Controls.DataVisualization.Toolkit.dll
System.Windows.Controls.Toolkit.dll
System.Windows.Controls.Toolkit.Internals.dll
System.Windows.Interactivity.dll
Database
IssueVision.Client
IssueVision.Client.csproj.user
Assets
Signin.png
Controls
Properties
Views
IssueVision.Common
IssueVision.Common.csproj.user
Controls
Helpers
Models
Properties
Resources
Themes
IssueVision.Data
IssueVision.Data.csproj.user
Properties
Web
Resources
IssueVision.Data.Web
IssueVision.edmx
Helpers
MetadataClasses
Properties
Resources
Services
IssueVision.Model
IssueVision.Model.csproj.user
Properties
IssueVision.Setup
IssueVisionSetup.vdproj
IssueVision.ViewModel
IssueVision.ViewModel.csproj.user
Properties
IssueVision.Web
IssueVision.Web.csproj.user
Properties
IssueVision_Silverlight_20110316.zip
GalaSoft.MvvmLight.Extras.SL4.dll
GalaSoft.MvvmLight.SL4.dll
MenuControls.dll
System.Windows.Controls.DataVisualization.Toolkit.dll
System.Windows.Controls.Toolkit.dll
System.Windows.Controls.Toolkit.Internals.dll
System.Windows.Interactivity.dll
IssueVision.Client.csproj.user
Signin.png
DataSources
IssueVision.Data.Web.IssueVisionContext.datasource
IssueVision.Data.Web.PasswordResetContext.datasource
IssueVision.Common.csproj.user
IssueVision.Data.csproj.user
IssueVision.edmx
DataTypes
IssueVision.Model.csproj.user
IssueVisionSetup.vdproj
IssueVision.ViewModel.csproj.user
IssueVision.Web.csproj.user
IssueVision_Silverlight_20110606.zip
GalaSoft.MvvmLight.Extras.SL4.dll
GalaSoft.MvvmLight.SL4.dll
MenuControls.dll
System.Windows.Controls.DataVisualization.Toolkit.dll
System.Windows.Controls.Toolkit.dll
System.Windows.Controls.Toolkit.Internals.dll
System.Windows.Interactivity.dll
IssueVision.Client.csproj.user
Signin.png
IssueVision.Common.csproj.user
IssueVision.Data.csproj.user
IssueVision.edmx
IssueVision.Model.csproj.user
IssueVisionSetup.vdproj
IssueVision.ViewModel.csproj.user
IssueVision.Web.csproj.user
IssueVision_Silverlight_Setup.zip
IssueVisionSetup.msi
setup.exe
using System;
using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;
using System.Windows;
using System.Windows.Controls;
using System.Runtime.Serialization;
using IssueVision.Common;

namespace IssueVision.Client
{
    public partial class App : Application
    {
        // CompositionContainer for the whole application
        public static CompositionContainer Container;

        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            Container = new CompositionContainer(new DeploymentCatalog());
            CompositionHost.Initialize(Container);
            CompositionInitializer.SatisfyImports(this);
            this.RootVisual = new MainPage();
        }

        private void Application_Exit(object sender, EventArgs e)
        {

        }
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }
        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight 2 Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }
    }
}

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About the Author

Weidong Shen
Software Developer (Senior)
United States United States
Weidong has been an information system professional since 1990. He has a Master's degree in Computer Science, and is currently a MCSD .NET

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