WPF Image控件中的ImageSource与Bitmap的互相转换

　[DllImport("gdi32.dll", SetLastError = true)]
        private static extern bool DeleteObject(IntPtr hObject);
 
        /// <summary>
        /// 从bitmap转换成ImageSource
        /// </summary>
        /// <param name="icon"></param>
        /// <returns></returns>
        public static ImageSource ChangeBitmapToImageSource(Bitmap bitmap)
        {
            //Bitmap bitmap = icon.ToBitmap();
            IntPtr hBitmap = bitmap.GetHbitmap();
            ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
                hBitmap,
                IntPtr.Zero,
                Int32Rect.Empty,
                BitmapSizeOptions.FromEmptyOptions());
            if (!DeleteObject(hBitmap))
            {
                throw new System.ComponentModel.Win32Exception();
            }
            return wpfBitmap;
        }

              Uri uri = new Uri("/Images/" + curImage,UriKind.Relative);
            BitmapImage bitmap = new BitmapImage(uri);
            myImage.Source = bitmap;

    private delegate void TimerDispatcherDelegate();

        private void autoShow_Click(object sender, RoutedEventArgs e)
        {
            timer = new Timer();
            timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
            timer.Interval = 1000;
            timer.Enabled = true;
            timer.Start();
        }

        void timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            this.Dispatcher.Invoke(DispatcherPriority.Normal, new TimerDispatcherDelegate(UpdataImage));
        }
void UpdataImage()
        {
            NextImage(imageList, imageIndex, curImage, uri);
        }