NET Two-dimensional code generation

NET Two-dimensional code generation (Thoughtworks.qrcode)

Reference ThoughtWorks.QRCode.dll (in source code)

1, simple two-dimensional code generation and decoding code:

        Generate two-dimensional code method one private void Createcode_simple (string nr) {Qrcodeencoder Qrcodeencoder = new            Qrcodeencoder (); Qrcodeencoder.qrcodeencodemode = Qrcodeencoder.encode_mode.            BYTE;            Qrcodeencoder.qrcodescale = 4;            Qrcodeencoder.qrcodeversion = 8; Qrcodeencoder.qrcodeerrorcorrect = qrcodeencoder.error_correction.            M            System.Drawing.Image Image = Qrcodeencoder.encode ("4408810820 Shenzhen-guangzhou xiaojiang");            System.Drawing.Image Image = Qrcodeencoder.encode (NR); string filename = DateTime.Now.ToString ("Yyyymmddhhmmssfff").            ToString () + ". jpg";            string filepath = Server.MapPath (@ "~\upload") + "\ \" + filename; System.IO.FileStream fs = new System.IO.FileStream (filepath, System.IO.FileMode.OpenOrCreate,            System.IO.FileAccess.Write); Image.            Save (FS, System.Drawing.Imaging.ImageFormat.Jpeg); Fs.            Close (); Image.            Dispose (); Two-dimensional code decoding VAR CodedecodeR = Codedecoder (filepath); }///<summary>//QR code decoding///</summary>//<param name= "FilePath" > Picture path <            /param>//<returns></returns> public string Codedecoder (string filePath) { if (!            System.IO.File.Exists (FilePath)) return null;            Bitmap Mybitmap = new Bitmap (Image.FromFile (FilePath));            Qrcodedecoder decoder = new Qrcodedecoder ();            String decodedstring = Decoder.decode (new Qrcodebitmapimage (Mybitmap));        return decodedstring; }

2, the source code demonstration, the relatively complex generation way:

Interface effect:

Front-End Code:

@{Layout = null;} <! DOCTYPE html>
Background:
        Generate QR Code///</summary>//<param name= "strdata" > Text or numbers to be generated, support Chinese. such as: "4408810820 Shenzhen-guangzhou" or:4444444444</param>//<param name= "qrencoding" > Three sizes: BYTE, Alpha_numeric,numer  ic</param>//<param Name= "level" > Size: L M Q h</param>//<param name= "Version" > Version: If        8</param>//<param name= "scale" > ratio: 4</param>//<returns></returns>             Public ActionResult Createcode_choose (string strdata, String qrencoding, string level, int version, Int. scale) {            Qrcodeencoder Qrcodeencoder = new Qrcodeencoder ();            string encoding = qrencoding; Switch (encoding) {case "Byte": Qrcodeencoder.qrcodeencodemode = qrcodeencod Er. Encode_mode.                    BYTE;                Break Case "alphanumeric": Qrcodeencoder.qrcodeencodemode = Qrcodeencoder.encode_mode. Alpha_numeric;                Break Case "Numeric": Qrcodeencoder.qrcodeencodemode = Qrcodeencoder.encode_mode.                    NUMERIC;                Break Default:qrCodeEncoder.QRCodeEncodeMode = Qrcodeencoder.encode_mode.                    BYTE;            Break            } Qrcodeencoder.qrcodescale = scale;            Qrcodeencoder.qrcodeversion = version; Switch (level) {case "L": Qrcodeencoder.qrcodeerrorcorrect = QRCODEENCODER.E Rror_correction.                    L                Break Case "M": Qrcodeencoder.qrcodeerrorcorrect = qrcodeencoder.error_correction.                    M                Break Case "Q": Qrcodeencoder.qrcodeerrorcorrect = qrcodeencoder.error_correction.                    Q;                Break Default:qrCodeEncoder.QRCodeErrorCorrect = qrcodeencoder.error_correction.                  H  Break            }//text generation picture image image = Qrcodeencoder.encode (strdata); string filename = DateTime.Now.ToString ("Yyyymmddhhmmssfff").            ToString () + ". jpg";            string filepath = Server.MapPath (@ "~\upload") + "\ \" + filename; If the folder does not exist, create the//if (!            Directory.Exists (filepath))//Directory.CreateDirectory (filepath); System.IO.FileStream fs = new System.IO.FileStream (filepath, System.IO.FileMode.OpenOrCreate,            System.IO.FileAccess.Write); Image.            Save (FS, System.Drawing.Imaging.ImageFormat.Jpeg); Fs.            Close (); Image.            Dispose ();        return Content (@ "/upload/" + filename); }
Source code Demo Download: Click to download
NET Two-dimensional code generation