C#实现用于生成条形码的类

本文实例讲述了c#实现用于生成条形码的类。分享给大家供大家参考。具体如下：

这个c#类可以用来生成39码 12位标准条形码

using system.collections;
using system.text.regularexpressions;
namespace dotnet.utilities
{
  public class barcodetohtml
  {
    public static string get39(string s, int width, int height)
    {
      hashtable ht = new hashtable();
      #region 39码 12位
      ht.add('a', "110101001011");
      ht.add('b', "101101001011");
      ht.add('c', "110110100101");
      ht.add('d', "101011001011");
      ht.add('e', "110101100101");
      ht.add('f', "101101100101");
      ht.add('g', "101010011011");
      ht.add('h', "110101001101");
      ht.add('i', "101101001101");
      ht.add('j', "101011001101");
      ht.add('k', "110101010011");
      ht.add('l', "101101010011");
      ht.add('m', "110110101001");
      ht.add('n', "101011010011");
      ht.add('o', "110101101001");
      ht.add('p', "101101101001");
      ht.add('q', "101010110011");
      ht.add('r', "110101011001");
      ht.add('s', "101101011001");
      ht.add('t', "101011011001");
      ht.add('u', "110010101011");
      ht.add('v', "100110101011");
      ht.add('w', "110011010101");
      ht.add('x', "100101101011");
      ht.add('y', "110010110101");
      ht.add('z', "100110110101");
      ht.add('0', "101001101101");
      ht.add('1', "110100101011");
      ht.add('2', "101100101011");
      ht.add('3', "110110010101");
      ht.add('4', "101001101011");
      ht.add('5', "110100110101");
      ht.add('6', "101100110101");
      ht.add('7', "101001011011");
      ht.add('8', "110100101101");
      ht.add('9', "101100101101");
      ht.add('+', "100101001001");
      ht.add('-', "100101011011");
      ht.add('*', "100101101101");
      ht.add('/', "100100101001");
      ht.add('%', "101001001001");
      ht.add('$', "100100100101");
      ht.add('.', "110010101101");
      ht.add(' ', "100110101101");
      #endregion
      #region 39码 9位
      //ht.add('0', "000110100");
      //ht.add('1', "100100001");
      //ht.add('2', "001100001");
      //ht.add('3', "101100000");
      //ht.add('4', "000110001");
      //ht.add('5', "100110000");
      //ht.add('6', "001110000");
      //ht.add('7', "000100101");
      //ht.add('8', "100100100");
      //ht.add('9', "001100100");
      //ht.add('a', "100001001");
      //ht.add('b', "001001001");
      //ht.add('c', "101001000");
      //ht.add('d', "000011001");
      //ht.add('e', "100011000");
      //ht.add('f', "001011000");
      //ht.add('g', "000001101");
      //ht.add('h', "100001100");
      //ht.add('i', "001001100");
      //ht.add('j', "000011100");
      //ht.add('k', "100000011");
      //ht.add('l', "001000011");
      //ht.add('m', "101000010");
      //ht.add('n', "000010011");
      //ht.add('o', "100010010");
      //ht.add('p', "001010010");
      //ht.add('q', "000000111");
      //ht.add('r', "100000110");
      //ht.add('s', "001000110");
      //ht.add('t', "000010110");
      //ht.add('u', "110000001");
      //ht.add('v', "011000001");
      //ht.add('w', "111000000");
      //ht.add('x', "010010001");
      //ht.add('y', "110010000");
      //ht.add('z', "011010000");
      //ht.add('-', "010000101");
      //ht.add('.', "110000100");
      //ht.add(' ', "011000100");
      //ht.add('*', "010010100");
      //ht.add('$', "010101000");
      //ht.add('/', "010100010");
      //ht.add('+', "010001010");
      //ht.add('%', "000101010");
      #endregion
      s = "*" + s.toupper() + "*";
      string result_bin = "";//二进制串
      try
      {
        foreach (char ch in s)
        {
          result_bin += ht[ch].tostring();
          result_bin += "0";//间隔，与一个单位的线条宽度相等
        }
      }
      catch { return "存在不允许的字符！"; }
      string result_html = ""; //html代码
      string color = "";    //颜色
      foreach (char c in result_bin)
      {
        color = c == '0' ? "#ffffff" : "#000000";
        result_html += "<div style=\"width:" + width + "px;height:" + height + "px;float:left;background:" + color + ";\"></div>";
      }
      result_html += "<div style=\"clear:both\"></div>";
      int len = ht['*'].tostring().length;
      foreach (char c in s)
      {
        result_html += "<div style=\"width:" + (width * (len + 1)) + "px;float:left;color:#000000;text-align:center;\">" + c + "</div>";
      }
      result_html += "<div style=\"clear:both\"></div>";
      return "<div style=\"background:#ffffff;padding:5px;font-size:" + (width * 10) + "px;font-family:'楷体';\">" + result_html + "</div>";
    }
    public static string getean13(string s, int width, int height)
    {
      int checkcode_input = -1;//输入的校验码
      if (!regex.ismatch(s, @"^\d{12}$"))
      {
        if (!regex.ismatch(s, @"^\d{13}$"))
        {
          return "存在不允许的字符！";
        }
        else
        {
          checkcode_input = int.parse(s[12].tostring());
          s = s.substring(0, 12);
        }
      }
      int sum_even = 0;//偶数位之和
      int sum_odd = 0; //奇数位之和
      for (int i = 0; i < 12; i++)
      {
        if (i % 2 == 0)
        {
          sum_odd += int.parse(s[i].tostring());
        }
        else
        {
          sum_even += int.parse(s[i].tostring());
        }
      }
      int checkcode = (10 - (sum_even * 3 + sum_odd) % 10) % 10;//校验码
      if (checkcode_input > 0 && checkcode_input != checkcode)
      {
        return "输入的校验码错误！";
      }
      s += checkcode;//变成13位
      // 000000000101左侧42个01010右侧35个校验7个101000000000
      // 6    101左侧6位 01010右侧5位校验1位101000000000
      string result_bin = "";//二进制串
      result_bin += "000000000101";
      string type = ean13type(s[0]);
      for (int i = 1; i < 7; i++)
      {
        result_bin += ean13(s[i], type[i - 1]);
      }
      result_bin += "01010";
      for (int i = 7; i < 13; i++)
      {
        result_bin += ean13(s[i], 'c');
      }
      result_bin += "101000000000";
      string result_html = ""; //html代码
      string color = "";    //颜色
      int height_bottom = width * 5;
      foreach (char c in result_bin)
      {
        color = c == '0' ? "#ffffff" : "#000000";
        result_html += "<div style=\"width:" + width + "px;height:" + height + "px;float:left;background:" + color + ";\"></div>";
      }
      result_html += "<div style=\"clear:both\"></div>";
      result_html += "<div style=\"float:left;color:#000000;width:" + (width * 9) + "px;text-align:center;\">" + s[0] + "</div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#ffffff;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      for (int i = 1; i < 7; i++)
      {
        result_html += "<div style=\"float:left;width:" + (width * 7) + "px;color:#000000;text-align:center;\">" + s[i] + "</div>";
      }
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#ffffff;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#ffffff;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#ffffff;\"></div>";
      for (int i = 7; i < 13; i++)
      {
        result_html += "<div style=\"float:left;width:" + (width * 7) + "px;color:#000000;text-align:center;\">" + s[i] + "</div>";
      }
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#ffffff;\"></div>";
      result_html += "<div style=\"float:left;width:" + width + "px;height:" + height_bottom + "px;background:#000000;\"></div>";
      result_html += "<div style=\"float:left;color:#000000;width:" + (width * 9) + "px;\"></div>";
      result_html += "<div style=\"clear:both\"></div>";
      return "<div style=\"background:#ffffff;padding:0px;font-size:" + (width * 10) + "px;font-family:'楷体';\">" + result_html + "</div>";
    }
    private static string ean13(char c, char type)
    {
      switch (type)
      {
        case 'a':
          {
            switch (c)
            {
              case '0': return "0001101";
              case '1': return "0011001";
              case '2': return "0010011";
              case '3': return "0111101";//011101
              case '4': return "0100011";
              case '5': return "0110001";
              case '6': return "0101111";
              case '7': return "0111011";
              case '8': return "0110111";
              case '9': return "0001011";
              default: return "error!";
            }
          }
        case 'b':
          {
            switch (c)
            {
              case '0': return "0100111";
              case '1': return "0110011";
              case '2': return "0011011";
              case '3': return "0100001";
              case '4': return "0011101";
              case '5': return "0111001";
              case '6': return "0000101";//000101
              case '7': return "0010001";
              case '8': return "0001001";
              case '9': return "0010111";
              default: return "error!";
            }
          }
        case 'c':
          {
            switch (c)
            {
              case '0': return "1110010";
              case '1': return "1100110";
              case '2': return "1101100";
              case '3': return "1000010";
              case '4': return "1011100";
              case '5': return "1001110";
              case '6': return "1010000";
              case '7': return "1000100";
              case '8': return "1001000";
              case '9': return "1110100";
              default: return "error!";
            }
          }
        default: return "error!";
      }
    }
    private static string ean13type(char c)
    {
      switch (c)
      {
        case '0': return "aaaaaa";
        case '1': return "aababb";
        case '2': return "aabbab";
        case '3': return "aabbba";
        case '4': return "abaabb";
        case '5': return "abbaab";
        case '6': return "abbbaa";//中国
        case '7': return "ababab";
        case '8': return "ababba";
        case '9': return "abbaba";
        default: return "error!";
      }
    }
  }
}

希望本文所述对大家的c#程序设计有所帮助。