private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            PictureBox pictureBox = sender as PictureBox;
            if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
            {                    DataObject dataObject = new DataObject();
                    string fileName = pictureBox.ImageLocation.ToString();
                    string[] files = new string[1] { fileName };                    DoDragDrop(new DataObject(DataFormats.FileDrop, files), DragDropEffects.Move /* | DragDropEffects.Link */);
            }
        }
一直出错,请教各位大侠指教下