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[DotNet] C#实现Code128条形码 [复制链接]

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t T
发表于 2011-06-23 21:01 |只看楼主
先把代码贴出，可以拿去用了。。
  1. using System;
  2. using System.Drawing;
  3. using System.Drawing.Imaging;
  4. using System.IO;

  6. namespace TestCode128
  7. {
  8.     public sealed class Code128
  9.     {
  10.         #region private variables
  11.         /// <summary>
  12.         /// The Space Between each of Title, BarCode, BarCodeString
  13.         /// </summary>
  14.         private const int SPACE_HEIGHT = 3;
  15.         SizeF _sizeLabel = SizeF.Empty;
  16.         SizeF _sizeBarCodeValue = SizeF.Empty;
  17.         SizeF _sizeBarCodeString = SizeF.Empty;
  18.         SizeF _sizeAdditionalInfo = SizeF.Empty;

  20.         #endregion

  22.         #region Label
  23.         private string _label = null;
  24.         private Font _labelFont = null;
  25.         /// <summary>
  26.         /// BarCode Title (条码标签)
  27.         /// </summary>
  28.         public string Label
  29.         {
  30.             set { _label = value; }
  31.         }
  32.         /// <summary>
  33.         /// BarCode Title Font (条码标签使用的字体)
  34.         /// </summary>
  35.         public Font LabelFont
  36.         {
  37.             get
  38.             {
  39.                 if (_labelFont == null)
  40.                     return new Font("Arial", 10);
  41.                 return _labelFont;
  42.             }
  43.             set { _labelFont = value; }
  44.         }
  45.         #endregion

  47.         private string _additionalInfo = null;
  48.         private Font _addtionalInfoFont = null;
  49.         /// <summary>
  50.         /// Additional Info Font (附加信息字体)
  51.         /// </summary>
  52.         public Font AdditionalInfoFont
  53.         {
  54.             set { _addtionalInfoFont = value; }
  55.             get
  56.             {
  57.                 if (_addtionalInfoFont == null) return new Font("Arial", 10);
  58.                 return _addtionalInfoFont;
  59.             }
  60.         }
  61.         /// <summary>
  62.         /// Additional Info Content, if "ShowBarCodeValue" is true, the info is unvisible
  63.         /// 附加信息，如果设置ShowBarCodeValue为true,则此项不显示
  64.         /// </summary>
  65.         public string AdditionalInfo
  66.         {
  67.             set { _additionalInfo = value; }
  68.         }

  70.         #region BarCode Value and Font
  71.         private string _barCodeValue = null;
  72.         /// <summary>
  73.         /// BarCode Value (条码值)
  74.         /// </summary>
  75.         public string BarCodeValue
  76.         {
  77.             get
  78.             {
  79.                 if (string.IsNullOrEmpty(_barCodeValue))
  80.                     throw new NullReferenceException("The BarCodeValue has not been set yet!");
  81.                 return _barCodeValue;
  82.             }
  83.             set { _barCodeValue = value.StartsWith("*") && value.EndsWith("*") ? value : "*" + value + "*"; }
  84.         }

  86.         private bool _showBarCodeValue = false;
  87.         /// <summary>
  88.         /// whether to show the original string of barcode value bellow the barcode
  89.         /// 是否在条码下方显示条码值，默认为false
  90.         /// </summary>
  91.         public bool ShowBarCodeValue
  92.         {
  93.             set { _showBarCodeValue = value; }
  94.         }

  96.         private Font _barCodeValueFont = null;
  97.         /// <summary>
  98.         /// the font of the codestring to show
  99.         /// 条码下方显示的条码值的字体
  100.         /// </summary>
  101.         public Font BarCodeValueFont
  102.         {
  103.             get
  104.             {
  105.                 if (_barCodeValueFont == null)
  106.                     return new Font("Arial", 10);
  107.                 return _barCodeValueFont;
  108.             }
  109.             set { _barCodeValueFont = value; }
  110.         }

  112.         private int _barCodeFontSize = 50;
  113.         /// <summary>
  114.         /// the font size of the barcode value to draw
  115.         /// 条码绘制的大小，默认50
  116.         /// </summary>
  117.         public int BarCodeFontSize
  118.         {
  119.             set { _barCodeFontSize = value; }
  120.         }
  121.         #endregion

  123.         #region generate the barcode image
  124.         private Bitmap BlankBackImage
  125.         {
  126.             get
  127.             {
  128.                 int barCodeWidth = 0, barCodeHeight = 0;
  129.                 using (Bitmap bmp = new Bitmap(1, 1, PixelFormat.Format32bppArgb))
  130.                 {
  131.                     using (Graphics g = Graphics.FromImage(bmp))
  132.                     {
  133.                         if (!string.IsNullOrEmpty(_label))
  134.                         {
  135.                             _sizeLabel = g.MeasureString(_label, LabelFont);
  136.                             barCodeWidth = (int)_sizeLabel.Width;
  137.                             barCodeHeight = (int)_sizeLabel.Height + SPACE_HEIGHT;
  138.                         }

  140.                         _sizeBarCodeValue = g.MeasureString(BarCodeValue, new Font("Code 128", _barCodeFontSize));
  141.                         barCodeWidth = Math.Max(barCodeWidth, (int)_sizeBarCodeValue.Width);
  142.                         barCodeHeight += (int)_sizeBarCodeValue.Height;

  144.                         if (_showBarCodeValue)
  145.                         {
  146.                             _sizeBarCodeString = g.MeasureString(_barCodeValue, BarCodeValueFont);
  147.                             barCodeWidth = Math.Max(barCodeWidth, (int)_sizeBarCodeString.Width);
  148.                             barCodeHeight += (int)_sizeBarCodeString.Height + SPACE_HEIGHT;
  149.                         }
  150.                         else
  151.                         {
  152.                             if (!string.IsNullOrEmpty(_additionalInfo))
  153.                             {
  154.                                 _sizeAdditionalInfo = g.MeasureString(_additionalInfo, AdditionalInfoFont);
  155.                                 barCodeWidth = Math.Max(barCodeWidth, (int)_sizeAdditionalInfo.Width);
  156.                                 barCodeHeight += (int)_sizeAdditionalInfo.Height + SPACE_HEIGHT;
  157.                             }
  158.                         }
  159.                     }
  160.                 }

  162.                 return new Bitmap(barCodeWidth, barCodeHeight, PixelFormat.Format32bppArgb);
  163.             }
  164.         }

  166.         /// <summary>
  167.         /// Draw the barcode value to the blank back image and output it to the browser
  168.         /// 绘制WebForm形式的条码
  169.         /// </summary>
  170.         /// <param name="ms">Recommand the "Response.OutputStream" 使用 Response.OutputStream</param>
  171.         /// <param name="imageFormat">The Image format to the Browser 输出到浏览器到图片格式，建议GIF</param>
  172.         public void CreateWebForm(Stream ms, ImageFormat imageFormat)
  173.         {
  174.             int barCodeWidth, barCodeHeight;
  175.             using (Bitmap bmp = this.BlankBackImage)
  176.             {
  177.                 barCodeHeight = bmp.Height;
  178.                 barCodeWidth = bmp.Width;
  179.                 using (Graphics g = Graphics.FromImage(bmp))
  180.                 {
  181.                     g.Clear(Color.White);
  182.                     g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
  183.                     g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
  184.                     int vPos = 0;
  185.                     ////Draw Label String
  186.                     if (!string.IsNullOrEmpty(_label))
  187.                     {
  188.                         g.DrawString(_label, LabelFont, new SolidBrush(Color.Black),
  189.                             XCenter((int)_sizeLabel.Width, barCodeWidth), vPos);
  190.                         vPos += (int)_sizeLabel.Height + SPACE_HEIGHT;
  191.                     }
  192.                     else { vPos = SPACE_HEIGHT; }

  194.                     ////Draw The Bar Value
  195.                     g.DrawString(_barCodeValue, new Font("Code 128", _barCodeFontSize), new SolidBrush(Color.Black),
  196.                         XCenter((int)_sizeBarCodeValue.Width, barCodeWidth), vPos);
  197.                     ////Draw the BarValue String
  198.                     if (_showBarCodeValue)
  199.                     {
  200.                         g.DrawString(_barCodeValue, BarCodeValueFont, new SolidBrush(Color.Black),
  201.                             XCenter((int)_sizeBarCodeString.Width, barCodeWidth),
  202.                             vPos + (int)_sizeBarCodeValue.Height);
  203.                     }
  204.                     else
  205.                     {
  206.                         if (!string.IsNullOrEmpty(_additionalInfo))
  207.                         {
  208.                             g.DrawString(_additionalInfo, AdditionalInfoFont, new SolidBrush(Color.Black),
  209.                             XCenter((int)_sizeAdditionalInfo.Width, barCodeWidth),
  210.                             vPos + (int)_sizeBarCodeValue.Height);
  211.                         }
  212.                     }
  213.                 }

  215.                 bmp.Save(ms, imageFormat);
  216.             }
  217.         }

  219.         /// <summary>
  220.         /// 生成winform格式的条码
  221.         /// </summary>
  222.         /// <param name="imageFormat">图片格式，建议GIF</param>
  223.         /// <returns>Stream类型</returns>
  224.         public Stream CreateWinForm(ImageFormat imageFormat)
  225.         {
  226.             int barCodeWidth, barCodeHeight;
  227.             using (Bitmap bmp = this.BlankBackImage)
  228.             {
  229.                 barCodeHeight = bmp.Height;
  230.                 barCodeWidth = bmp.Width;
  231.                 using (Graphics g = Graphics.FromImage(bmp))
  232.                 {
  233.                     g.Clear(Color.White);
  234.                     g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
  235.                     g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
  236.                     int vPos = 0;
  237.                     ////Draw Label String
  238.                     if (!string.IsNullOrEmpty(_label))
  239.                     {
  240.                         g.DrawString(_label, LabelFont, new SolidBrush(Color.Black),
  241.                             XCenter((int)_sizeLabel.Width, barCodeWidth), vPos);
  242.                         vPos += (int)_sizeLabel.Height + SPACE_HEIGHT;
  243.                     }
  244.                     else { vPos = SPACE_HEIGHT; }

  246.                     ////Draw The Bar Value
  247.                     g.DrawString(_barCodeValue, new Font("Code 128", _barCodeFontSize), new SolidBrush(Color.Black),
  248.                         XCenter((int)_sizeBarCodeValue.Width, barCodeWidth), vPos);
  249.                     ////Draw the BarValue String
  250.                     if (_showBarCodeValue)
  251.                     {
  252.                         g.DrawString(_barCodeValue, BarCodeValueFont, new SolidBrush(Color.Black),
  253.                             XCenter((int)_sizeBarCodeString.Width, barCodeWidth),
  254.                             vPos + (int)_sizeBarCodeValue.Height);
  255.                     }
  256.                     else
  257.                     {
  258.                         if (!string.IsNullOrEmpty(_additionalInfo))
  259.                         {
  260.                             g.DrawString(_additionalInfo, AdditionalInfoFont, new SolidBrush(Color.Black),
  261.                             XCenter((int)_sizeAdditionalInfo.Width, barCodeWidth),
  262.                             vPos + (int)_sizeBarCodeValue.Height);
  263.                         }
  264.                     }
  265.                 }

  267.                 Stream ms = new MemoryStream();
  268.                 bmp.Save(ms, imageFormat);
  269.                 return ms;
  270.             }
  271.         }
  272.         #endregion

  274.         private static int XCenter(int subWidth, int globalWidth)
  275.         {
  276.             return (globalWidth - subWidth) / 2;
  277.         }

  279.     }
  280. }
复制代码
上面code128的源代码，下面是调用的代码示例：
  1.         private void button1_Click(object sender, EventArgs e)
  2.         {
  3.             Code128 code128 = new Code128();
  4.             code128.BarCodeValue = "*211232231131221213131222212222221224121213121211321132331112";
  5.             code128.BarCodeFontSize = 30;
  6.             code128.ShowBarCodeValue = true;

  8.             Stream ms = new MemoryStream();
  9.             ms = code128.CreateWinForm(System.Drawing.Imaging.ImageFormat.Gif);
  10.             pictureBox1.Image = Image.FromStream(ms);

  12.             code128 = null;
  13.         }
复制代码
代码就不解释了，另外要注意一点如果直接执行上面的代码是不能打印成功的，输出的是一串文字图片，这是因为没有安装code128字体的原因，安装字体即可。
下面是字体包下载：
code_128.zip (, 下载次数:65)
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