Question

Is this enough:

    using (Graphics g = Graphics.FromImage(image))
    {
        g.DrawImage(newImage.GetThumbnailImage(10, 10, null, new IntPtr()), 3, 3, 10, 10);
    }

Or should I use:

  using (Graphics g = Graphics.FromImage(image))
        {
            using (Image i = newImage.GetThumbnailImage(10, 10, null, new IntPtr()))
            {
                g.DrawImage(i, 3, 3, 10, 10);
            }
        }

EDIT:
Can someone please add some MS reference that even when there is no variable created – the resources will not be freed immediately?

Answer 1

It’s not going to be disposed unless you specifically call the Dispose() method on it (or it leaves a using block). So in your case, using the second using block would be the safer choice to make sure you free unmanaged resources.