C # Generate two-dimensional code business cards

From the "31-Day Learning CRM Project Development <c# programming entry-level project combat >"

This example uses the Thoughtworks.qrcode class library to generate a two-dimensional code card. Before formally coding, what is a vCard first ? It is a standard or specification used to define an electronic business card. Mobile phone records can be exported in vCard format. Fragment 21-15 is a vCard format text, from the data structure is not complex, according to the format to fill the relevant information, in two-dimensional code output.

    Begin:vcard      FN: Zhang San      TITLE: Technical director      ORG: Qingdao * * Software Co., Ltd.; ERP Business Department      TEL; cell:18605327777      TEL; work:+86 0532 86887777      TEL; work; 传真: 0532 86887778      ADR; Work: Qingdao South District, Hong Kong Road, No. 100th      URL:www.huiyaosoft.com      EMAIL; Work:[email protected]      Note:      x-qq:      PHOTO; Encoding=b; Type=jpeg:      End:vcard  

The main development steps are as follows:

(1) Draw form 21-7 as shown

(2) Add Reference ThoughtWorks.QRCode.dll
(3) Fragment 21-16 use Thoughtworks.qrcode to export business card information to PictureBox1, the more information, the larger the two-dimensional code image. If the picture is small, the information is relatively large, the generated QR code is not easy to identify. Line 31-34 demonstrates the way to add a logo to a QR code image, because the QR code itself has a certain ability to correct the error.
Code Snippet 21-16

     Public StaticBitmap Gettwodimensioncode (stringstrsource,stringTextintWidthintHeightstringfontname) {          //Create a Bitmap objectBitmap BMP =NewBitmap (width, height); //Create a Graphics object from imageGraphics Objgraphics =graphics.fromimage (BMP); //fill in the background colorObjgraphics.fillrectangle (Brushes.white,0,0, BMP. Width, BMP.          Height); //ThoughtWorks.QRCode.Codec.QRCodeEncoder Qrcodeencoder =NewThoughtWorks.QRCode.Codec.QRCodeEncoder (); //Setting the Encoding methodQrcodeencoder.qrcodeencodemode =ThoughtWorks.QRCode.Codec.QRCodeEncoder.ENCODE_MODE.          BYTE; //Set SizeQrcodeencoder.qrcodescale =3; //for less informative situations, the smaller the image, the less information is saved//Qrcodeencoder.qrcodescale = 4; //Set VersionQrcodeencoder.qrcodeversion =0; //set the level of error check, just because the QR code has the ability to correct, to join the logoQrcodeencoder.qrcodeerrorcorrect =ThoughtWorks.QRCode.Codec.QRCodeEncoder.ERROR_CORRECTION.          M Image Image= Qrcodeencoder.encode (strsource, Encoding.GetEncoding ("Utf-8")); //write QR code        intx = (int) (Width-image. Width)/2; inty = (int) (Height-image. Height)/2; Objgraphics.drawimage (Image,NewPoint (x, y)); //Add logo iconImage =TwoDimensionCodeNameCard.Properties.Resources.Apps_tux_icon; X= (int) (Width-image. Width)/2; Y= (int) (Height-image. Height)/2; Objgraphics.drawimage (Image,NewPoint (x, y)); returnbmp; }  

In code snippet 21-16, line 34 uses the DrawImage () method to add an image to the Objgraphics specified location, and code snippet 21-17 demonstrates the use of the drawstring () The Objgraphics method adds the string text to the specified position.

Code Snippet 21-17

    // Write String      New  - , FontStyle.Bold),           new PointF ();  

Sample Download: http://download.csdn.net/detail/daiqianjie/9472868

C # Generate two-dimensional code business cards