C#PictureBox存储成图片



  SaveFileDialog save = new SaveFileDialog();
            save.FileName = "画图";
            save.Filter = "(.jpg)|*.jpg";

            if (save.ShowDialog() == DialogResult.OK)
            {
                    Bitmap bit = new Bitmap(PictureBox.ClientRectangle.Width, PictureBox.ClientRectangle.Height);
                    PictureBox.DrawToBitmap(bit, PictureBox.ClientRectangle);
                    bit.Save(save.FileName);
             }