图像类型的互转

　　废话不说，直接码代码：

static class ImageConverter
{
    public static ImageSource ToImageSource(this Bitmap bitmap)
    {
        return System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
    }

    public static BitmapSource ToBitmapSource(this Bitmap bitmap)
    {
        return System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
    }

    public static Icon ToIcon(this Bitmap bitmap)
    {
        return Icon.FromHandle(bitmap.GetHicon());
    }

    public static Image ToImage(this Bitmap bitmap)
    {
        return Image.FromHbitmap(bitmap.GetHbitmap());
    }

    public static ImageSource ToImageSource(this Icon icon)
    {
        return System.Windows.Interop.Imaging.CreateBitmapSourceFromHIcon(icon.Handle, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
    }
}