Generate QR Code function

1. Specify a logo image to generate

Must refer to ThoughtWorks.QRCode.dll

Qrcodewechart QWC =NewQrcodewechart (); // intMemberID =1000000; // intOrder =1; // stringTKT =Qwc.ticket (MemberID, order); Ticket T= jsonconvert.deserializeobject<ticket>(TKT); stringURL =Xxxxxxxxxxxxxxxxxxxxxx;//t.url; To generate the URL address for the QR code//Verify URL            if(URL.) Length = =0)            {                //UTILS.SHOWMSG2 (This, "Please enter the URL");                return; }            //generate two-dimensional codeQrcodeencoder qrentity =NewQrcodeencoder (); Qrentity.qrcodeencodemode= Qrcodeencoder.encode_mode. BYTE;//Two-dimensional code encoding methodQrentity.qrcodescale =Ten;//the width of each small squareQrentity.qrcodeversion =5;//Two-dimensional code version numberQrentity.qrcodeerrorcorrect = qrcodeencoder.error_correction. M//Error correction code levelSystem.Drawing.Bitmap Srcimage; //dynamically adjust the QR code version number, upper limit 40, too long return blank picture, encoded character maximum byte length 2953             while(true)            {                Try{srcimage=qrentity.encode (URL, System.Text.Encoding.UTF8);  Break; }                Catch(IndexOutOfRangeException ex) {if(Qrentity.qrcodeversion < +) {qrentity.qrcodeversion++; }                    Else{srcimage=NewBitmap ( -, -);  Break; }}} System.Drawing.Image img= System.Drawing.Image.FromFile (Server.MapPath ("~/images/favicon.jpg")); if(img! =NULL)            {                //System.IO.Stream picstream = img1.                InputStream; //System.Drawing.Image img = System.Drawing.Image.FromStream (picstream);                if(IMG. Width > -|| Img. Height > -) {img.                    Dispose (); //(This, "Upload logo image error, logo image width can not exceed 250px, and height can not exceed 250px! ");                    return; Img.                Dispose (); }                //draw the logo to a two-dimensional codeBitmap Blogo = img asBitmap;//Get logo Image ObjectBlogo =NewBitmap (Blogo, -, -);//change the size of the picture here we set it to                intY =Srcimage.                Height; intX =Srcimage.                Width; Point Point=NewPoint (X/2- theY2- the);//logo image is drawn to the QR code, here will be a simple calculation of the logo coordinatesGraphics g = graphics.fromimage (srcimage);//Create a canvasG.drawimage (Blogo, point);//draw the logo image to the QR code image//imgqr.imageurl = srcimage;            }            stringTempdire = Server.MapPath ("~/IMGES/QT"); if(!directory.exists (Tempdire))            {directory.createdirectory (tempdire);} stringImgpath ="~/imges/qt/"+ DateTime.Now.ToString ("yyyy_mm_dd_hh_ss_mm") +". bmp"; Srcimage. Save (Server.MapPath (Imgpath));

2. Upload the type upload using FileUpload must refer to the ThoughtWorks.QRCode.dll

//Verify URL            stringURL = This. TxtURL.Text.Trim (); if(URL.) Length = =0) {UTILS.SHOWMSG2 ( This,"Please enter the URL"); return; }            //generate two-dimensional codeQrcodeencoder qrentity =NewQrcodeencoder (); Qrentity.qrcodeencodemode= Qrcodeencoder.encode_mode. BYTE;//Two-dimensional code encoding methodQrentity.qrcodescale =Ten;//the width of each small squareQrentity.qrcodeversion =5;//Two-dimensional code version numberQrentity.qrcodeerrorcorrect = qrcodeencoder.error_correction. M//Error correction code levelSystem.Drawing.Bitmap Srcimage; //dynamically adjust the QR code version number, upper limit 40, too long return blank picture, encoded character maximum byte length 2953             while(true)            {                Try{srcimage=qrentity.encode (URL, System.Text.Encoding.UTF8);  Break; }                Catch(IndexOutOfRangeException ex) {if(Qrentity.qrcodeversion < +) {qrentity.qrcodeversion++; }                    Else{srcimage=NewBitmap ( -, -);  Break; }                }            }            //Verify logoHttppostedfile logo =Filelogo.postedfile; if(Logo. ContentLength >0)            {                if(!utils.isimage (logo). InputStream)) {UTILS.SHOWMSG2 ( This,"Picture Format Error"); return; } System.IO.Stream Picstream=logo.                InputStream; System.Drawing.Image img=System.Drawing.Image.FromStream (Picstream); if(IMG. Width > -|| Img. Height > -) {img.                    Dispose (); UTILS.SHOWMSG2 ( This,"Upload logo image error, logo image width can not exceed 250px, and height can not exceed 250px! "); return; Img.                Dispose (); }                //draw the logo to a two-dimensional codeBitmap Blogo = img asBitmap;//Get logo Image ObjectBlogo =NewBitmap (Blogo, -, -);//change the size of the picture here we set it to                intY =Srcimage.                Height; intX =Srcimage.                Width; Point Point=NewPoint (X/2- theY2- the);//logo image is drawn to the QR code, here will be a simple calculation of the logo coordinatesGraphics g = graphics.fromimage (srcimage);//Create a canvasG.drawimage (Blogo, point);//draw the logo image to the QR code image//imgqr.imageurl = srcimage;            }            stringTempdire = Server.MapPath (".. /upload/supplier/"+ Currentsupplier.supplierid +"/qrbitmap/"); if(!directory.exists (Tempdire))            {directory.createdirectory (tempdire);} stringImgpath =".. /upload/supplier/"+ Currentsupplier.supplierid +"/qrbitmap/"+ Guid.NewGuid (). ToString () +". bmp"; Srcimage. Save (Server.MapPath (Imgpath));

Generate QR Code function