Barcode Scanner not scanning the Barcode image generated in ASP.Net

while i am rotating barcode image horizantal to verticle scanner is not reading barcode image.

string barCode = dt.Rows[i]["MemberShipid"].ToString();
                System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();
                using (Bitmap bitMap = new Bitmap(barCode.Length * 40, 80))
                {
                    using (Graphics graphics = Graphics.FromImage(bitMap))
                    {
                        Font oFont = new Font("IDAutomationHC39M", 20);
                        PointF point = new PointF(2f, 2f);
                        SolidBrush blackBrush = new SolidBrush(Color.Black);
                        SolidBrush whiteBrush = new SolidBrush(Color.White);
                        graphics.FillRectangle(whiteBrush, 0, 0, bitMap.Width, bitMap.Height);
                        graphics.DrawString("*" + barCode + "*", oFont, blackBrush, point);
                    }
                    using (MemoryStream ms = new MemoryStream())
                    {
                        bitMap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                        byte[] byteImage = ms.ToArray();
                        Convert.ToBase64String(byteImage);
                        dr["Image"] = Page.ResolveUrl(imgBarCode.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(byteImage));
                    }
                }