1.  using System;
  2.  using System.Collections;
  3.  using System.Collections.Generic;
  4.  using System.Drawing;
  5.  using System.Linq;
  6.  using System.Text;
  7.  using System.Threading.Tasks;
  8.  
  9.  namespace JXUtil
  10.  {
  11.      public class BarCode
  12.      {
  13.          private Hashtable _Code39 = new Hashtable();
  14.  
  15.          /// <summary>
  16.          /// 内容
  17.          /// </summary>
  18.          public string Text { get; set; }
  19.  
  20.          /// <summary>
  21.          /// 放大倍数
  22.          /// </summary>
  23.          public byte Magnify { get; set; }
  24.  
  25.          /// <summary>
  26.          /// 图形高
  27.          /// </summary>
  28.          public int Height { get; set; }
  29.  
  30.          /// <summary>
  31.          /// 字体大小
  32.          /// </summary>
  33.          public Font ViewFont { get; set; }
  34.  
  35.          public BarCode()
  36.          {
  37.              _Code39.Add("A", "");
  38.              _Code39.Add("B", "");
  39.              _Code39.Add("C", "");
  40.              _Code39.Add("D", "");
  41.              _Code39.Add("E", "");
  42.              _Code39.Add("F", "");
  43.              _Code39.Add("G", "");
  44.              _Code39.Add("H", "");
  45.              _Code39.Add("I", "");
  46.              _Code39.Add("J", "");
  47.              _Code39.Add("K", "");
  48.              _Code39.Add("L", "");
  49.              _Code39.Add("M", "");
  50.              _Code39.Add("N", "");
  51.              _Code39.Add("O", "");
  52.              _Code39.Add("P", "");
  53.              _Code39.Add("Q", "");
  54.              _Code39.Add("R", "");
  55.              _Code39.Add("S", "");
  56.              _Code39.Add("T", "");
  57.              _Code39.Add("U", "");
  58.              _Code39.Add("V", "");
  59.              _Code39.Add("W", "");
  60.              _Code39.Add("X", "");
  61.              _Code39.Add("Y", "");
  62.              _Code39.Add("Z", "");
  63.              _Code39.Add("", "");
  64.              _Code39.Add("", "");
  65.              _Code39.Add("", "");
  66.              _Code39.Add("", "");
  67.              _Code39.Add("", "");
  68.              _Code39.Add("", "");
  69.              _Code39.Add("", "");
  70.              _Code39.Add("", "");
  71.              _Code39.Add("", "");
  72.              _Code39.Add("", "");
  73.              _Code39.Add("+", "");
  74.              _Code39.Add("-", "");
  75.              _Code39.Add("*", "");
  76.              _Code39.Add("/", "");
  77.              _Code39.Add("%", "");
  78.              _Code39.Add("&", "");
  79.              _Code39.Add(".", "");
  80.              _Code39.Add(" ", "");
  81.          }
  82.  
  83.          public enum Code39Model
  84.          {
  85.              /// <summary>
  86.              /// 基本类别 1234567890ABC
  87.              /// </summary>
  88.              Code39Normal,
  89.              /// <summary>
  90.              /// 全ASCII方式 +A+B 来表示小写
  91.              /// </summary>
  92.              Code39FullAscII
  93.          }
  94.  
  95.          /// <summary>
  96.          /// 获得条码图形
  97.          /// </summary>
  98.          /// <param name="text">文字信息</param>
  99.          /// <param name="model">类别</param>
  100.          /// <param name="stat">是否增加前后*号</param>
  101.          /// <returns>图形</returns>
  102.          public Bitmap GetCodeImage(Code39Model model, bool star)
  103.          {
  104.              string textVal = "";
  105.              string textCode = "";
  106.              char[] charVal = null;
  107.              switch (model)
  108.              {
  109.                  case Code39Model.Code39Normal:
  110.                      textVal = Text.ToUpper();
  111.                      break;
  112.                  default:
  113.                      charVal = Text.ToCharArray();
  114.                      for (int i = ; i != charVal.Length; i++)
  115.                      {
  116.                          if ((int)charVal[i] >=  && (int)charVal[i] <= )
  117.                          {
  118.                              textVal += "+" + charVal[i].ToString().ToUpper();
  119.  
  120.                          }
  121.                          else
  122.                          {
  123.                              textVal += charVal[i].ToString();
  124.                          }
  125.                      }
  126.                      break;
  127.              }
  128.              charVal = textVal.ToCharArray();
  129.              if (star == true) textCode += _Code39["*"];
  130.              for (int i = ; i != charVal.Length; i++)
  131.              {
  132.                  if (star == true && charVal[i] == '*') throw new Exception("带有起始符号不能出现*");
  133.                  object _CharCode = _Code39[charVal[i].ToString()];
  134.                  if (_CharCode == null) throw new Exception("不可用的字符" + charVal[i].ToString());
  135.                  textCode += _CharCode.ToString();
  136.              }
  137.              if (star == true) textCode += _Code39["*"];
  138.              Bitmap bmp = GetImage(textCode);
  139.              GetViewImage(bmp, Text);
  140.              return bmp;
  141.          }
  142.  
  143.          /// <summary>
  144.          /// 绘制编码图形
  145.          /// </summary>
  146.          /// <param name="text">编码</param>
  147.          /// <returns>图形</returns>
  148.          private Bitmap GetImage(string text)
  149.          {
  150.              char[] val = text.ToCharArray();
  151.  
  152.              //宽 == 需要绘制的数量*放大倍数 + 两个字的宽
  153.              Bitmap codeImg = new Bitmap(val.Length * ((int)Magnify + ), (int)Height);
  154.              Graphics graph = Graphics.FromImage(codeImg);
  155.  
  156.              graph.FillRectangle(Brushes.White, new Rectangle(, , codeImg.Width, codeImg.Height));
  157.  
  158.              int len = ;
  159.              for (int i = ; i != val.Length; i++)
  160.              {
  161.                  int width = Magnify + ;
  162.                  if (val[i] == '')
  163.                  {
  164.                      graph.FillRectangle(Brushes.Black, new Rectangle(len, , width, Height));
  165.  
  166.                  }
  167.                  else
  168.                  {
  169.                      graph.FillRectangle(Brushes.White, new Rectangle(len, , width, Height));
  170.                  }
  171.                  len += width;
  172.              }
  173.  
  174.              graph.Dispose();
  175.              return codeImg;
  176.          }
  177.  
  178.          /// <summary>
  179.          /// 绘制文字
  180.          /// </summary>
  181.          /// <param name="codeImage">图形</param>
  182.          /// <param name="text">文字</param>
  183.          private void GetViewImage(Bitmap codeImage, string text)
  184.          {
  185.              if (ViewFont == null) return;
  186.              Graphics graphic = Graphics.FromImage(codeImage);
  187.              SizeF fontSize = graphic.MeasureString(text, ViewFont);
  188.  
  189.              if (fontSize.Width > codeImage.Width || fontSize.Height > codeImage.Height - )
  190.              {
  191.                  graphic.Dispose();
  192.                  return;
  193.              }
  194.              int starHeight = codeImage.Height - (int)fontSize.Height;
  195.              graphic.FillRectangle(Brushes.White, new Rectangle(, starHeight, codeImage.Width, (int)fontSize.Height));
  196.  
  197.              int _StarWidth = (codeImage.Width - (int)fontSize.Width) / ;
  198.              graphic.DrawString(text, ViewFont, Brushes.Black, _StarWidth, starHeight);
  199.              graphic.Dispose();
  200.  
  201.          }
  202.      }
  203.  
  204.      public class BarCode128
  205.      {
  206.          //  ASCII从32到127对应的条码区,由3个条、3个空、共11个单元构成,符号内含校验码
  207.          private string[] Code128Encoding = new string[] {
  208.  "", "", "", "", "", "", "", "", "", "",
  209.  "", "", "", "", "", "", "", "", "", "",
  210.  "", "", "", "", "", "", "", "", "", "",
  211.  "", "", "", "", "", "", "", "", "", "",
  212.  "", "", "", "", "", "", "", "", "", "",
  213.  "", "", "", "", "", "", "", "", "", "",
  214.  "", "", "", "", "", "", "", "", "", "",
  215.  "", "", "", "", "", "", "", "", "", "",
  216.  "", "", "", "", "", "", "", "", "", "",
  217.  "", "", "", "", "", "", "", "", "", "",
  218.  "", "", "", "", "", ""
  219.  };
  220.          private const string Code128Stop = "", Code128End = ""; //固定码尾
  221.          private enum Code128ChangeModes { CodeA = , CodeB = , CodeC =  }; //变更
  222.          private enum Code128StartModes { CodeUnset = , CodeA = , CodeB = , CodeC =  };//各类编码的码头
  223.  
  224.          /// <summary>
  225.          /// 绘制Code128码(以像素为单位)
  226.          /// </summary>
  227.          public int EncodeBarcode(string code, System.Drawing.Graphics g, int x, int y, int width, int height, bool showText)
  228.          {
  229.              if (string.IsNullOrEmpty(code)) new Exception("条码不能为空");
  230.              List<int> encoded = CodetoEncoded(code); //1.拆分转义
  231.              encoded.Add(CheckDigitCode128(encoded)); //2.加入校验码
  232.              string encodestring = EncodeString(encoded); //3.编码
  233.  
  234.              if (showText) //计算文本的大小,字体占图像的1/4高
  235.              {
  236.                  Font font = new System.Drawing.Font("宋体", height / 4F, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel, ((byte)()));
  237.                  SizeF size = g.MeasureString(code, font);
  238.                  height = height - (int)size.Height;
  239.  
  240.                  int _StarWidth = (width - (int)size.Width) / ;
  241.                  g.DrawString(code, font, System.Drawing.Brushes.Black, _StarWidth, height);
  242.                  int w = DrawBarCode(g, encodestring, x, y, width, height); //4.绘制
  243.                  return ((int)size.Width > w ? (int)size.Width : w);
  244.              }
  245.              else
  246.                  return DrawBarCode(g, encodestring, x, y, width, height); //4.绘制
  247.          }
  248.  
  249.          //1.检测并将字符串拆分并加入码头
  250.          private List<int> CodetoEncoded(string code)
  251.          {
  252.              List<int> encoded = new List<int>();
  253.              int type = ;//2:B类,3:C类
  254.              for (int i = ; code.Length > ; i++)
  255.              {
  256.                  int k = isNumber(code);
  257.                  if (k >= ) //连续偶个数字可优先使用C类(其实并不定要转C类，但能用C类时条码会更短)
  258.                  {
  259.                      if (type == ) encoded.Add((int)Code128StartModes.CodeC); //加入码头
  260.                      else if (type != ) encoded.Add((int)(Code128ChangeModes.CodeC)); //转义
  261.                      type = ;
  262.                      for (int j = ; j < k; j = j + ) //两位数字合为一个码身
  263.                      {
  264.                          encoded.Add(Int32.Parse(code.Substring(, )));
  265.                          code = code.Substring();
  266.                      }
  267.                  }
  268.                  else
  269.                  {
  270.                      if ((int)code[] <  || (int)code[] > ) throw new Exception("字符串必须是数字或字母");
  271.                      if (type == ) encoded.Add((int)Code128StartModes.CodeB); //加入码头
  272.                      else if (type != ) encoded.Add((int)(Code128ChangeModes.CodeB)); //转义
  273.                      type = ;
  274.                      encoded.Add((int)code[] - );//字符串转为ASCII-32
  275.                      code = code.Substring();
  276.                  }
  277.              }
  278.              return encoded;
  279.          }
  280.          //2.校验码
  281.          private int CheckDigitCode128(List<int> encoded)
  282.          {
  283.              int check = encoded[];
  284.              for (int i = ; i < encoded.Count; i++)
  285.                  check = check + (encoded[i] * i);
  286.              return (check % );
  287.          }
  288.  
  289.          //2.编码(对应Code128Encoding数组)
  290.          private string EncodeString(List<int> encoded)
  291.          {
  292.              string encodedString = "";
  293.              for (int i = ; i < encoded.Count; i++)
  294.              {
  295.                  encodedString += Code128Encoding[encoded[i]];
  296.              }
  297.              encodedString += Code128Stop + Code128End; // 加入结束码
  298.              return encodedString;
  299.          }
  300.  
  301.          //4.绘制条码(返回实际图像宽度)
  302.          private int DrawBarCode(System.Drawing.Graphics g, string encodeString, int x, int y, int width, int height)
  303.          {
  304.              int w = width / encodeString.Length;
  305.              for (int i = ; i < encodeString.Length; i++)
  306.              {
  307.                  g.FillRectangle(encodeString[i] == '' ? System.Drawing.Brushes.White : System.Drawing.Brushes.Black, x, y, w, height);
  308.                  x += w;
  309.              }
  310.              return w * (encodeString.Length + );
  311.          }
  312.          //检测是否连续偶个数字,返回连续数字的长度
  313.          private int isNumber(string code)
  314.          {
  315.              int k = ;
  316.              for (int i = ; i < code.Length; i++)
  317.              {
  318.                  if (char.IsNumber(code[i]))
  319.                      k++;
  320.                  else
  321.                      break;
  322.              }
  323.              if (k %  != ) k--;
  324.              return k;
  325.          }
  326.  
  327.          /// <summary>
  328.          /// 绘制Code128码到图片
  329.          /// </summary>
  330.          public Image EncodeBarcode(string code, int width, int height, bool showText)
  331.          {
  332.              Bitmap image = new Bitmap(width, height);
  333.              using (Graphics g = Graphics.FromImage(image))
  334.              {
  335.                  g.Clear(Color.White);
  336.                  int w = EncodeBarcode(code, g, , , width, height, showText);
  337.  
  338.                  Bitmap image2 = new Bitmap(w, height); //剪切多余的空白;
  339.                  using (Graphics g2 = Graphics.FromImage(image2))
  340.                  {
  341.                      g2.DrawImage(image, , );
  342.                      return image2;
  343.                  }
  344.  
  345.              }
  346.  
  347.          }
  348.  
  349.          /// <summary>
  350.          /// 绘制Code128码到流
  351.          /// </summary>
  352.          public byte[] EncodeBarcodeByte(string code, int width, int height, bool showText)
  353.          {
  354.              Image image = EncodeBarcode(code, width, height, showText);
  355.              System.IO.MemoryStream ms = new System.IO.MemoryStream();
  356.              image.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
  357.              byte[] byteImage = ms.ToArray();
  358.              ms.Close();
  359.              image.Dispose();
  360.              return byteImage;
  361.  
  362.          }
  363.      }
  364.  }
  1.  <div>
  2.          <table>
  3.              <tr>
  4.                  <td>条码：</td>
  5.                  <td>
  6.                      <textarea id="barCode"></textarea><br />
  7.                      <span style="color: #ccc;">动态生成条码，生成多条码使用“,”号分隔。</span>
  8.                  </td>
  9.              </tr>
  10.              <tr>
  11.                  <td></td>
  12.                  <td>
  13.                      <a id="btnCreate">生成</a>
  14.                  </td>
  15.              </tr>
  16.          </table>
  17.  </div>
  1.  $("#btnCreate").click(function () {
  2.              var barCode = $("#barCode").val();
  3.              if (barCode != "" && barCode != null) {
  4.                  $("#print").html("");
  5.                  var imgStr = "";
  6.                  if (barCode.indexOf(",") > -1) {
  7.                      var code = barCode.split(",");
  8.                      $.each(code, function (index, value) {
  9.                          if (value != "" && value != null) {
  10.                              imgStr += "<div><img src='/BaseData/CreateBarCode?code=" + value + "'/></div>";
  11.                          }
  12.                      });
  13.                  }
  14.                  else {
  15.                      imgStr = "<div><img src='/BaseData/CreateBarCode?code=" + barCode + "'/></div>";
  16.                  }
  17.  
  18.                  $("#print").append(imgStr);
  19.              }
  20.              else {
  21.                  alert("条码不能为空！");
  22.              }
  23.          });
  1.  public ActionResult CreateBarCode(string code)
  2.          {
  3.              JXUtil.BarCode barcode = new JXUtil.BarCode();
  4.              barcode.Text = code;
  5.              barcode.Height = ;
  6.              barcode.Magnify = ;
  7.              barcode.ViewFont = new Font("宋体", );
  8.              System.Drawing.Image codeImage = barcode.GetCodeImage(JXUtil.BarCode.Code39Model.Code39Normal, true);
  9.  
  10.              System.IO.MemoryStream ms = new System.IO.MemoryStream();
  11.              codeImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
  12.  
  13.              Response.ContentType = "image/jpeg";
  14.              Response.Clear();
  15.              Response.BinaryWrite(ms.ToArray());
  16.  
  17.              return new EmptyResult();
  18.          }

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