C#生成条形码

首先需要引用zxing.dll     

public void getBarCode(HttpContext context) {
            int width = DTRequest.GetFormInt("width");长
            int height = DTRequest.GetFormInt("height");宽
            string order_no = DTRequest.GetFormString("order_no");订单号

            try
            {
                QrCodeEncodingOptions options = new QrCodeEncodingOptions();
                options.DisableECI = true;
                options.CharacterSet = "UTF-8";
                options.Width = width;
                options.Height = height;
                BarcodeWriter writer = new BarcodeWriter();
                writer.Format = BarcodeFormat.CODE_128;
                writer.Options = options;
                Bitmap bitmap = writer.Write(order_no);///这里显示订单号 writer.Write("1234566");
                string upLoadPath = GetUpLoadPath(); //上传目录相对路径
                string fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径
                if (!Directory.Exists(fullUpLoadPath)) {
                    Directory.CreateDirectory(fullUpLoadPath);
                }
                string newFileName = Utils.GetRamCode()+".jpg"; //随机生成新的文件名
                string newFilePath = upLoadPath + newFileName; //上传后的路径
                string url = newFilePath;
                bitmap.Save(fullUpLoadPath + newFileName); //保存在本地文件夹
                bitmap.Dispose();
                context.Response.Write("{\"status\":1, \"msg\":\"" + url + "\"}");
            }
            catch(Exception e){
                context.Response.Write("{\"status\":0, \"msg\":\"" + e.ToString() + "\"}");
            }

        }