void appTimer_Tick(object sender, EventArgs e) { //Reload the application content, if there is still an internet connection if (NetworkHelper.InternetAccessIsAvailable()) { UpdateContent(); } //Update the timer to fire 24 hours from now _appTimer.Interval = 86400000; //milliseconds in 24 hours }
private void TestInternetConnection() { _internetAvailable = NetworkHelper.InternetAccessIsAvailable(); }
static void Main() { //Checking to see if logging is enabled. GlobalVariables.LoggingEnabled = Settings.Default.LoggingEnabled; GlobalVariables.GetApplicationVersion(); if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Application starting."); } //Checking to see if the application is running if (Mutex.WaitOne(TimeSpan.Zero, true)) { if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Checking internet connection."); } if (!NetworkHelper.InternetAccessIsAvailable()) { MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information); if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("No internet connection. Application exiting."); } Environment.Exit(Environment.ExitCode); } else { //Application is not currently running and there is an available internet connection //Check for updates if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Checking for application update."); } if (ApplicationUpdater.UpdateIsAvailable()) { //Kick off the updater var dlgResult = MessageBox.Show(Resources.UpdateQuestion, Resources.AnUpdateIsAvailable, MessageBoxButtons.YesNo); if (dlgResult == DialogResult.Yes) { //Need the 'runas' verb to allow admin privileges for update var startInfo = new ProcessStartInfo("Updater.exe") { Verb = "runas" }; Process.Start(startInfo); } else { Application.Run(new PicofDay()); } } else { Application.Run(new PicofDay()); } } } else { //If application is already running and there is no internet connection available, close the application if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Application is already running. But there is no internet connection. Exiting the application."); } if (!NetworkHelper.InternetAccessIsAvailable()) { MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information); Application.ExitThread(); } } }
/// <summary> /// Overloaded GetImage that allows the retrieval of previous images based on their position in the XML document /// provided from the nasa.gov website. /// </summary> /// <param name="selectedOffset">Position of the image within the node list of images, 1 being the very first (newest)</param> /// <param name="selectedPage">Page number to retrieve the page that contains the selected image.</param> public BackgroundImage GetImage(int?selectedOffset, int?selectedPage) { try { if (!NetworkHelper.InternetAccessIsAvailable()) { throw new Exception("Attempted to retrieve image, but internet connection was not available."); } if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Retrieving system screen resolution"); } GetCurrentScreenResolution(); if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation(string.Format("System screen resolution is: {0}", _currentScreenResolution)); } if (selectedOffset == null) { selectedOffset = DefaultimageOffset; } //Get the JSON string data if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Preparing to download image information"); } var nasaImages = JsonHelper.DownloadSerializedJsonData(string.Format(NasaLatestImagesUrl, selectedPage)); if (nasaImages == null || nasaImages.UberNodes.Length == 0) { throw new Exception("Unable to retrieve image data from JSON request"); } //Get the image node var imageId = nasaImages.UberNodes[(int)selectedOffset].UberNodeId; var currentImageFullUrl = string.Format("{0}{1}.json", NasaApiUrl, imageId); var currentImage = JsonHelper.DownloadImageData(currentImageFullUrl); if (currentImage == null) { throw new Exception(string.Format("Unable to retrieve selected image: {0}", currentImageFullUrl)); } if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation("Selecting image based on current screen resolution"); } switch (_currentScreenResolution) { case "100x75": case "226x170": currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].LrThumbnail); break; case "346x260": case "360x225": case "466x248": case "430x323": currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].Crop1X1); break; case "800x600": currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].Crop2X1); break; default: currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].FullWidthFeature); break; } var localImageFolderPath = string.Format("{0}\\NASA\\PicOfTheDay", Environment.GetFolderPath(Environment.SpecialFolder.MyPictures)); if (!Directory.Exists(localImageFolderPath)) { Directory.CreateDirectory(localImageFolderPath); } var imageName = currentImage.ImageData[0].FileName; //Setting the full local image path to save the file var fullImagePath = string.Format("{0}\\{1}", localImageFolderPath, imageName); //Download the current image if (GlobalVariables.LoggingEnabled) { ExceptionManager.WriteInformation(string.Format("Preparing to download image: {0}", currentImageFullUrl)); } if (!DownloadHelper.DownloadImage(fullImagePath, currentImageFullUrl)) { throw new Exception("Error downloading current image."); } //Create BackgroundImage object var backgroundImage = new BackgroundImage { ImageUrl = currentImageFullUrl, ImageDate = Convert.ToDateTime(currentImage.UberData.PromoDateTime), ImageDescription = StripHtml(currentImage.UberData.Body), DownloadedPath = fullImagePath, ImageTitle = !string.IsNullOrEmpty(currentImage.ImageData[0].Title) ? currentImage.ImageData[0].Title : currentImage.UberData.Title }; return(backgroundImage); } catch (Exception ex) { ExceptionManager.WriteException(ex); return(null); } }