gistfile1.cs

        public ImageSource ImageUri
        {
            get
            {
                BitmapImage image = new BitmapImage();

                try
                {
                    image.BeginInit();
                    image.CacheOption = BitmapCacheOption.OnLoad;
                    image.CreateOptions = BitmapCreateOptions.IgnoreImageCache;
                    image.UriSource = new Uri("Images/twitterlivetile.png", UriKind.Relative);
                    image.EndInit();
                }
                catch
                {
                    
                }

                return image;
            }
        }