ASP.NET生成二维码

 1、下载：ThoughtWorks.QRCode.dll 文件 2、 #region 根据链接获取二维码         /// <summary>         /// 根据链接获取二维码         /// </summary>         /// <param name="link">链接</param>         /// <returns>返回二维码图片</returns>         public static Bitmap GetQRCodeBmp(string link)         {             QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();             qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;             qrCodeEncoder.QRCodeScale = 16;             qrCodeEncoder.QRCodeVersion = 0;             qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;             Bitmap bmp = qrCodeEncoder.Encode(link);             return bmp;         }         #endregion 3、Bitmap bmp = PlmCommon.GetQRCodeBmp("abcd");             string str = HttpContext.Current.Request.MapPath("\\aa.bmp");             bmp.Save(str);