object IValueConverter.Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Operation operation = value as Operation;
if (operation == null)
{
return(null);
}
byte[] buffer = null;
FileInfo imagePath = new FileInfo(Path.Combine(CacheLocation, operation.Id + ".png"));
if (!imagePath.Exists)
{
buffer = DownloadRoutePlan(operation);
if (buffer == null)
{
return(ClientExtensions.GetPackUri(this, "Images/NoRouteImage.png"));
}
imagePath.Directory.Create();
File.WriteAllBytes(imagePath.FullName, buffer);
}
else
{
buffer = File.ReadAllBytes(imagePath.FullName);
}
BitmapImage image = new BitmapImage();
image.BeginInit();
image.StreamSource = new MemoryStream(buffer);
image.EndInit();
return(image);
}
/// <summary>
/// Returns the content from the "No route image" image as an image.
/// </summary>
/// <returns></returns>
public static ImageSource GetNoRouteImage()
{
return(new BitmapImage(ClientExtensions.GetPackUri("AlarmWorkflow.Windows.UI", NoRouteImagePath)));
}