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A Silverlight Introduction for Line-of-Business Applications

, 30 Aug 2009 CPOL
An introduction on Silverlight for developers of administrative applications. The article starts by explaining the basics of WPF and then delves deeper in the business-oriented aspects.
silverlightlob_src.zip
CarSelector
CarSelector.csproj.user
Img
exit16.png
open16.png
Properties
Service References
CarService
CarSelector.CarService.Car.datasource
CarSelector.CarService.SimpleCar.datasource
CarService.disco
CarService.wsdl
configuration.svcinfo
configuration91.svcinfo
Reference.svcmap
ServiceReferences.ClientConfig
Themes
CarSelector.Web
App_Data
CarSelector.Web.csproj.user
CarService.svc
ClientBin
CarSelector.xap
Media
DBDataClasses.dbml
DBDataClasses.dbml.layout
Properties
Settings.settings
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace CarSelector
{
    public partial class App : Application
    {
        private MainContent _content;
        private ListPage _list;
        private DetailPage _detail;

        public CarService.CarServiceClient Service { get; private set; }

        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)
        {
            Service = new CarSelector.CarService.CarServiceClient();
            
            _content = new MainContent();
            this.RootVisual = _content;


        }

        public void NavigateToList()
        {
            if (_list == null)
                _list= new ListPage();
            _content.Navigate(_list);
        }

        public void NavigateToDetail(int id)
        {
            if (_detail == null)
                _detail = new DetailPage();
            _content.Navigate(_detail);

            _detail.SetItemId(id);
        }

        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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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

Xavier Spileers
CEO TRI-S bvba, Cogenius bvba
Belgium Belgium
I'm working since 1999 in an IT environment: started developing in PROGRESS 4GL, then VB6 and am working since 2003 with C#. I'm currently transitioning to HTML5, CSS3 and JavaScript for the front-end development.
I started my own company (TRI-S) in 2007 and co-founded another one (Cogenius) in 2012.
Besides being a Microsoft Certified Professional Developer (MCPD) I'm also a Microsoft Certified Trainer (MCT) and am teaching .NET and JavaScript courses.
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