private void DownloadConfigXMLCompleted(object sender, DownloadStringCompletedEventArgs e) { string themeName = GetAppParamValue("Theme"); try { AppConfig = ApplicationConfig.Deserialize(e.Result); if (AppConfig == null) { MessageBox.Show("Sorry! Loading the application configuration failed. Please validate configuration file AppConfig.xml"); return; } if (string.IsNullOrEmpty(themeName)) { themeName = AppConfig.Theme.Trim(); } if (!string.IsNullOrEmpty(themeName)) { //if (!UriParser.IsKnownScheme("pack")) UriParser.Register(new GenericUriParser(GenericUriParserOptions.GenericAuthority), "pack", -1); string themeUri = string.Format("/ESRI.SilverlightViewer;component/Themes/{0}.xaml", themeName); ResourceDictionary themeRes = new ResourceDictionary(); themeRes.Source = new Uri(themeUri, UriKind.Relative); this.Resources.MergedDictionaries.Add(themeRes); } ResourceDictionary SymbolRes = new ResourceDictionary(); SymbolRes.Source = new Uri("/ESRI.SilverlightViewer;component/Symbols/EsriSymbols.xaml", UriKind.Relative); this.Resources.MergedDictionaries.Add(SymbolRes); // Load the main control here MapPage mapPage = new MapPage(); this.RootVisual = mapPage; } catch (Exception ex) { MessageBox.Show("Load Theme Error: " + ex.Message); } }