Comment puis-je imprimer un code à barres itf dans C#

Question

Je dois imprimer et entrelacé 2 sur 5 code à barres (18 chiffres sans checksum) en utilisant GDI +. Je l'ai fait pour le code à barres code 128 en utilisant du code trouvé sur le web. Le lecteur de code à barres ne lit malheureusement pas le code 128, je dois donc recourir aux codes à barres ITF.

Merci, Ken

Answer 1

Je ne sais pas GDI +, mais vous pouvez le faire avec iTextSharp (open source). Il y a un exemple: http://itextsharp.sourceforge.net/examples/Chap0907.cs

Et une explication ici: http://itextsharp.sourceforge.net/tutorial/ch09.html#barcode

Answer 2

class I2of5 
{ 
    private static string[] patterns = 
    { 
     "NNWWN",//0 
     "WNNNW",//1 
     "NWNNW",//2 
     "WWNNN",//3 
     "NNWNW",//4 
     "WNWNN",//5 
     "NWWNN",//6 
     "NNNWW",//7 
     "WNNWN",//8 
     "NWNWN"//9 
    }; 

    public I2of5() 
    { 

    } 
    public static Image MakeBarcodeImage(string barcodeNumber) 
    { 
     int width = 420; 
     int height = 60; 

     string barcodeString = "NnNn";//start pattern 
     int barcodeLength = barcodeNumber.Length; 
     for(int i =0 ; i < barcodeLength; i++) 
     { 
      int firstNumber = int.Parse(barcodeNumber[i].ToString()); 
      int secondNumber = int.Parse(barcodeNumber[i + 1].ToString()); 

      string firstPattern = patterns[firstNumber].ToUpper(); 
      string secondPattern = patterns[secondNumber].ToLower(); 

      barcodeString += String.Format("{0}{1}{2}{3}{4}{5}{6}{7}{8}{9}", firstPattern[0], secondPattern[0], 
       firstPattern[1] , secondPattern[1] , 
       firstPattern[2] , secondPattern[2] , 
       firstPattern[3] , secondPattern[3] , 
       firstPattern[4] , secondPattern[4]); 

      i++; 
     } 
     barcodeString +="WnN";//stop pattern 

     Image barcodeImage = new System.Drawing.Bitmap(width, height); 
     using (Graphics gr = Graphics.FromImage(barcodeImage)) 
     { 

      // set to white so we don't have to fill the spaces with white 
      gr.FillRectangle(Brushes.White, 0, 0, width, height); 

      int cursor = 0; 

      for (int codeidx = 0; codeidx < barcodeString.Length; codeidx++) 
      { 
       char code = barcodeString[codeidx]; 

       int BarWeight = 1; 
       int barwidth = ((code == 'N') || (code == 'n'))?2 * BarWeight: 6 * BarWeight; 

       if((code == 'N') || (code == 'W')) 
       { 
        gr.FillRectangle(System.Drawing.Brushes.Black, cursor, 0, barwidth , height); 
       } 

       // note that we never need to draw the space, since we 
       // initialized the graphics to all white 

       // advance cursor beyond this pair 
       cursor += barwidth; 
      } 



     } 
     return barcodeImage; 
    }