This code show how to open an external web page. Evaluating if is an Desktop or Web Apllication. using System.Runtime.InteropServices.Automation; using System.Windows.Browser; using Microsoft.LightSwitch.Client; using Microsoft.LightSwitch.Threading; var uri = new Uri("http://google.com", UriKind.RelativeOrAbsolute); Dispatchers.Main.BeginInvoke(() => { try{ // If is a Desktop application if (AutomationFactory.IsAvailable){ var shell = AutomationFactory.CreateObject("Shell.Application"); shell.ShellExecute(uri.ToString()); } // If is a Web application else if (!System.Windows.Application...