public byte[] temp;
        private void savebutton_Click (object sender, RoutedEventArgs e)
        {
            var library = new MediaLibrary();
            library.SavePicture(textBox1.Text.ToString(),temp);
            NavigationService.GoBack();
        }
        void wc_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            if (e.Error == null && !e.Cancelled)
            {
                try
                {
                    BitmapImage image = new BitmapImage();
                    image.SetSource(e.Result);
                    image1.Source = image;

                    temp = new byte[e.Result.Length];
                }
                catch (Exception ex)
                {
                    //Exception handle appropriately for your app
                    MessageBox.Show(ex.ToString());
                }
            }
            else
            {
                //Either cancelled or error handle appropriately for your app
            }
        }