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Configurable Silverlight Image Rotator

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23 Feb 2009CPOL11 min read 103K   3.1K   84  
Using Silverlight 2.0 and C#/VB.NET to build an image rotator that has a useful set of basic features and is easy to setup and deploy.
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 ImageRotator_CSharp
{
	public partial class App : Application
	{

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

			InitializeComponent();
		}

		/// <summary>
		/// If all 11 initParamaters are passed in call the overloaded constructor
		/// on Page.xaml.cs otherwise, throw an exception.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void Application_Startup(object sender, StartupEventArgs e)
		{
			if (e.InitParams.Count == 11)
				this.RootVisual = new Page(e.InitParams);
			else
				throw new Exception("You must pass the required InitParams to the Page.xaml.cs constructor.");
		}

		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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License

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


Written By
Software Developer (Senior)
United States United States
I have been Software developer for the past 10 years. Mostly worked in web world in asp.net and c#. Recently began job using wpf and vb.net.

Also enjoy reading books on politics and American history, listening to music, and COD on XBox 360.

Visit my blog at: www.anothercodesite.com/blog

All posts have source code for both C# and VB.

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