clearcanvas库c＃

//// Code
void OpenFile()
    {
        try
        {
            LocalSopDataSource dataSource = new LocalSopDataSource(fileName);
            ImageSop imageSop = new ImageSop(dataSource);
            //IPresentationImage presentationImage =
            //    PresentationImageFactory.Create(imageSop);
            IPresentationImage theOne = null;
            foreach (IPresentationImage image in PresentationImageFactory.Create(imageSop))
            {
                theOne = image;
            }
            Bitmap bmp = new Bitmap(500, 500);
            theOne.DrawToBitmap(bmp);

            pictureBox1.Image = bmp;
        }
        catch (Exception e2)
        {
            MessageBox.Show(e2.Message);
        }


    }