C # WinForm can add logos by thoughtworks.qrcode generation of QR code decoding

The first thing to do is to download the ThoughtWorks.QRCode.dll file and add references.

ThoughtWorks.QRCode.dll Download, click to download

The interface is as follows:

Code:

usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Linq;usingSystem.Text;usingSystem.Windows.Forms;usingThoughtWorks.QRCode.Codec;usingThoughtWorks.QRCode.Codec.Data;usingThoughtWorks.QRCode.Codec.Util;usingSystem.IO;namespaceqrcode{ Public Partial classFmain:form { PublicFmain () {InitializeComponent (); string[] Cbversion =New string[ A];  for(inti =0; I <= +; i++) {Cbversion[i]=i.tostring (); } Cbversion.datasource=cbversion; Cbversion.text="7"; Cbencoding.text="Byte"; Cbcorrectionlevel.text="M"; }        Private voidBtnencode_click (Objectsender, EventArgs e) {            stringencoding =Cbencoding.text; stringCorrectionlever =Cbcorrectionlevel.text; intVersion =Convert.ToInt32 (Cbversion.text); intScale ; if(!int. TryParse (TxtScale.Text.Trim (), outScale )) {MessageBox.Show ("Scale must be a number"); return; }            stringdata =TxtData.Text.Trim (); if(Data = =string. Empty) {MessageBox.Show ("data cannot be empty, please input data Oh! "); return; } qrcodeencoder Qrcodeencoder=NewQrcodeencoder ();//Create an Object            Switch(encoding)//Setting the encoding mode            {                 Case "Byte": Qrcodeencoder.qrcodeencodemode=Qrcodeencoder.encode_mode.                    BYTE;  Break;  Case "alphanumeric": Qrcodeencoder.qrcodeencodemode=Qrcodeencoder.encode_mode.                    Alpha_numeric;  Break;  Case "Numeric": Qrcodeencoder.qrcodeencodemode=Qrcodeencoder.encode_mode.                    NUMERIC;  Break; }            //Setting the Encoding measurement degreeQrcodeencoder.qrcodescale =Scale ; //set the encoded versionQrcodeencoder.qrcodeversion =version; if(Correctionlever = ="L")//set encoding error correction{qrcodeencoder.qrcodeerrorcorrect=qrcodeencoder.error_correction.            L }            Else if(Correctionlever = ="M") {Qrcodeencoder.qrcodeerrorcorrect=qrcodeencoder.error_correction.            M }            Else if(Correctionlever = ="Q") {Qrcodeencoder.qrcodeerrorcorrect=qrcodeencoder.error_correction.            Q; }            Else if(Correctionlever = ="H") {Qrcodeencoder.qrcodeerrorcorrect=qrcodeencoder.error_correction.            H } Qrcodeencoder.qrcodeforegroundcolor= Btnqrcodeforegroundcolor.backcolor;//set two-dimensional code foreground colorQrcodeencoder.qrcodebackgroundcolor = Btnqrcodebackgroundcolor.backcolor;//set the background color of the two-dimensional codeImage image = Qrcodeencoder.encode (Data,encoding.utf8);//generate two-dimensional code images                        if(TxtLogo.Text.Trim ()! =string. Empty)//If you have a logo, add a logo{Bitmap BTM=NewBitmap (Txtlogo.text); Bitmap Copyimage=NewBitmap (btm,image. width/5, image. height/5); Graphics g=graphics.fromimage (image); intx = image. Width/2-Copyimage.width/2; inty = image. Height/2-Copyimage.height/2;            G.drawimage (Copyimage,x,y); } picencode.image=image; }        Private voidBtndecode_click (Objectsender, EventArgs e) {            Try            {                stringDecodedString =NewQrcodedecoder (). Decode (NewQrcodebitmapimage (NewBitmap (picencode.image)), Encoding.UTF8); Txtdata.text=decodedstring; }            Catch(Exception ex) {MessageBox.Show (ex).            Message); }        }        Private voidBtnsave_click (Objectsender, EventArgs e)//save QR code to disk{SaveFileDialog SFD=NewSaveFileDialog (); SfD. Filter="JPeg Image|*.jpg| Bitmap image|*.bmp| Gif image|*.gif| PNG Image|*.png"; SfD. Title="save two-dimensional code"; SfD. FileName=string.            Empty; if(Picencode.image! =NULL)            {                if(SFD. ShowDialog () = = DialogResult.OK && sfd. FileName! ="")                {                    using(FileStream fs =(FileStream) sfd. OpenFile ()) {Switch(SFD. FilterIndex) { Case 1: PicEncode.Image.Save (FS, System.Drawing.Imaging.ImageFormat.Jpeg);  Break;  Case 2: PicEncode.Image.Save (FS, SYSTEM.DRAWING.IMAGING.IMAGEFORMAT.BMP);  Break;  Case 3: PicEncode.Image.Save (FS, System.Drawing.Imaging.ImageFormat.Gif);  Break;  Case 4: PicEncode.Image.Save (FS, System.Drawing.Imaging.ImageFormat.Png);  Break; }} MessageBox.Show ("Congratulations, save the success! "); }            }            Else{MessageBox.Show ("Sorry, there are no pictures to save! "); }        }        Private voidBtnprint_click (Objectsender, EventArgs e) {                    }        Private voidBtnopen_click (Objectsender, EventArgs e)//Open the logo file you want to select{OpenFileDialog ofd=NewOpenFileDialog (); Ofd. Filter="JPeg Image|*.jpg| Bitmap image|*.bmp| Gif image|*.gif| PNG Image|*.png"; if(OFD. ShowDialog () = =DialogResult.OK) {String fileName=OFD.                FileName; Picencode.image=NewBitmap (fileName); }        }        Private voidBtnchooselogo_click (Objectsender, EventArgs e) {OpenFileDialog OFD=NewOpenFileDialog (); Ofd. Filter="JPeg Image|*.jpg| Bitmap image|*.bmp| Gif image|*.gif| PNG Image|*.png"; if(OFD. ShowDialog () = =DialogResult.OK) {Txtlogo.text=OFD.            FileName; }        }        Private voidBtnqrcodeforegroundcolor_click (Objectsender, EventArgs e) {ColorDialog CD=NewColorDialog (); if(CD. ShowDialog () = =DialogResult.OK) {Btnqrcodeforegroundcolor.backcolor=CD.            Color; }        }        Private voidBtnqrcodebackgroundcolor_click (Objectsender, EventArgs e) {ColorDialog CD=NewColorDialog (); if(CD. ShowDialog () = =DialogResult.OK) {Btnqrcodebackgroundcolor.backcolor=CD.            Color; }        }    }}

The effect is as follows:

C # WinForm can add logos by thoughtworks.qrcode generation of QR code decoding