C # uses the ZXing.dll library to generate two-dimensional code

Recently work needs a need, that is, a service address to generate two-dimensional code, can be used to scan code sharing, online find the next method is more, I here PO call ZXing.dll Library to generate two-dimensional code method it. First, a brief introduction to the Zxing Library, Zxing Library is an open source Java class Library, can be used to generate and parse a variety of formats 1d/2d barcode;zxing follow Apache License 2.0, just tools, is no charge.

Zxing Library:http://zxingnet.codeplex.com/

Click to download , unzip the zip package after downloading:

Add the zxing to the engineering application, the following is the core code:

1 /// <summary>2         ///generate two-dimensional code images3         /// </summary>4         /// <param name= "strmessage" >a string to generate a two-dimensional code</param>5         /// <param name= "width" >Two-dimensional code image width</param>6         /// <param name= "height" >Two-dimensional code image height</param>7         /// <returns></returns>8         PrivateBitmap getqrcodebyzxingnet (String strmessage,int32 width,int32 height)9         {TenBitmap result =NULL; One             Try A             { -Barcodewriter Barcodewriter =NewBarcodewriter (); -Barcodewriter.format =Barcodeformat.qr_code; theBARCODEWRITER.OPTIONS.HINTS.ADD (Encodehinttype.character_set,"UTF-8"); - barCodeWriter.Options.Hints.Add (encodehinttype.error_correction, ZXing.QrCode.Internal.ErrorCorrection Level.H); -BarCodeWriter.Options.Height =height; -BarCodeWriter.Options.Width =width; +BarCodeWriter.Options.Margin =0; -ZXing.Common.BitMatrix BM =Barcodewriter.encode (strmessage); +result =Barcodewriter.write (BM); A             } at             Catch(Exception ex) -             {  -                 //Abnormal output -             } -             returnresult; -}

Look at the effect of creating a QR code:

At the same time, Zxing Library also supports the decoding of QR code images.

The core code for decoding is as follows:

/// <summary>        ///decode QR Code/// </summary>        /// <param name= "Barcodebitmap" >QR code image to decode</param>        /// <returns>Sweep Code Results</returns>        Private stringDecodeqrcode (Bitmap barcodebitmap) {Barcodereader reader=NewBarcodereader (); Reader. Options.characterset="UTF-8"; varresult =Reader.             Decode (BARCODEBITMAP); return(Result = =NULL) ?NULL: Result.        Text; }

Look at the effect:

Just looking for a QR code:

The sweep code results are as follows:

C # uses the ZXing.dll library to generate two-dimensional code