屏幕的缩放与布局设置125%后，图片显示不全

屏幕的缩放与布局设置125%后，图片显示不全

            var fg =this.CreateGraphics();
            Bitmap bmp;
            Metafile curMetafile = null;
            Graphics g = this.CreateGraphics();
            IntPtr hdc = g.GetHdc();
            try
            {
                using (var ms = new MemoryStream())
                {
                    curMetafile = new Metafile(ms, hdc);
                    Graphics g1 = Graphics.FromImage(curMetafile);
                    g1.SmoothingMode = SmoothingMode.HighQuality;

                    g1.FillEllipse(new SolidBrush(Color.Red), new RectangleF(0, 0, 500, 500));

                    g.ReleaseHdc(hdc);
                    g1.Dispose();
                    g.Dispose();
                    Bitmap bitmap = new Bitmap(curMetafile);
                    pictureBox1.Image = bitmap;
                    pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
                }
            }
            catch (Exception exp)
            {
                MessageBox.Show(exp.Message);
                g.ReleaseHdc(hdc);
                g.Dispose();
                return;
            }
            }

比例设置为100%时 ，显示是正常的。

但是设置为125%时，显示就不全了，请教一下大家有解决办法吗？

private byte[] GetImageData()
        {
            var fg = this.CreateGraphics();
            Metafile curMetafile = null;
            Graphics g = this.CreateGraphics();
            IntPtr hdc = g.GetHdc();
            try
            {
                using (var ms = new MemoryStream())
                {
                    curMetafile = new Metafile(ms, hdc);
                    Graphics g1 = Graphics.FromImage(curMetafile);
                    g1.SmoothingMode = SmoothingMode.HighQuality;
                    g1.PixelOffsetMode = PixelOffsetMode.HighSpeed;
                    g1.FillEllipse(new SolidBrush(Color.Red), new RectangleF(0, 0, 500, 500));

                    g.ReleaseHdc(hdc);
                    g1.Dispose();
                    g.Dispose();
                    return ms.ToArray();

                }
            }
            catch (Exception exp)
            {
                MessageBox.Show(exp.Message);
                g.ReleaseHdc(hdc);
                g.Dispose();
                return null;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            pictureBox1.Image = Image.FromStream(new MemoryStream(GetImageData()));
            pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
        }