Shulou(Shulou.com)06/03 Report--

This article will explain in detail how ASP.NET generates QR codes. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

ThoughtWorks.QRCode:

Private void CreateQrcode (string nr) {Bitmap bt; string enCodeString = nr; QRCodeEncoder qrCodeEncoder = new QRCodeEncoder (); bt = qrCodeEncoder.Encode (enCodeString, Encoding.UTF8); string filename = DateTime.Now.ToString ("yyyymmddhhmmss"); string path = Server.MapPath ("~ / image/") + filename + ".jpg"; Response.Write (path); bt.Save (path) This.Image1.ImageUrl = "~ / image/" + filename + ".jpg";}

QrCode.Net:

Protected void Button1_Click (object sender, EventArgs e) {using (var ms = new MemoryStream ()) {string stringtest = "China ing http://www.baidu.com/mvc.test?&"; GetQRCode (stringtest, ms); Response.ContentType =" image/Png "; Response.OutputStream.Write (ms.GetBuffer (), 0, (int) ms.Length); Image img = Image.FromStream (ms) String filename = DateTime.Now.ToString ("yyyymmddhhmmss"); string path = Server.MapPath ("~ / image/") + filename + ".png"; img.Save (path); Response.End () }} / get the character to be encoded / output stream / True if the encoding succeeded, false if the content is empty or too large to fit in a QR code public static bool GetQRCode (string strContent, MemoryStream ms) {ErrorCorrectionLevel Ecl = ErrorCorrectionLevel.M; / / error correction level string Content = strContent / / content to be encoded QuietZoneModules QuietZones = QuietZoneModules.Two; / / Blank int ModuleSize = 12 var encoder = new QrEncoder (Ecl); QrCode qr; if (encoder.TryEncode (Content, out qr)) / / A pair of content is encoded and the resulting matrix {var render = new GraphicsRenderer (ModuleSize, QuietZones) is saved; render.WriteToStream (qr.Matrix, ImageFormat.Png, ms) } else {return false;} return true;} this is the end of the article on "how to generate a QR code in ASP.NET". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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