c# get image from window system clipboard

            saveFileDialog1.ShowDialog();
            ScreenPath = saveFileDialog1.FileName;

            IDataObject d = Clipboard.GetDataObject();

            if (d.GetDataPresent(DataFormats.Bitmap))
            {
                Bitmap b = (Bitmap)d.GetData(DataFormats.Bitmap);
                b.Save(ScreenPath);
            }