Code39是条形码的一种。由于编制简单、能够对任意长度的数据进行编码、支持设备广泛等特性而被广泛采用。
- 能够对任意长度的数据进行编码。其局限在于印刷品的长度和条码阅读器的识别范围。
- 支持设备广泛。目前几乎所有的条形码阅读设备都能阅读Code39码,打印机也是同样情况。
- 编制简单。简单的开发技术就能快速生成相应的编码图像。
- 一般Code39码由5条线和分开它们的4条缝隙共9个元素构成。线和缝隙有宽窄之分,而且无论线还是缝隙仅有3个比其他的元素要宽一定比例。39码因此得名
Code39条形码规则
1、 每五条线表示一个字符;
2、 粗线表示1,细线表示0;
3、 线条间的间隙宽的表示1,窄的表示0;
4、 五条线加上它们之间的四条间隙就是九位二进制编码,而且这九位中必定有三位是1,所以称为39码;
5、 条形码的首尾各一个 * 标识开始和结束。
Code 39只接受如下43个有效输入字符:
1、26个大写字母(A - Z),
2、十个数字(0 - 9),
3、连接号(-),句号(.),空格,美圆符号($),斜扛(/),加号(+)以及百分号(%)。
4、其余的输入将被忽略。
5、code39通常情况下不需要校验码。但是对於精确度要求高的应用,需要在code39条形码後面增加一个校验码。
条形码的生成网上也有很多库文件,做的特别好的都是商业授权。一维码二维码在.net开源项目中的生成读取比较知名的有:Zxing.net(http://zxingnet.codeplex.com/)、BarcodeLib等
但有些时候开源软件所实现的并不满足当下的需求,所以还要做一些其他尝试。效果如下图:
代码分享:
1 /// <summary> 2 /// Code39一维码生成类 3 /// </summary> 4 public class CSharpCode39 5 { 6 7 #region 数据码 8 private byte[,] c39_bp = new byte[,] { 9 { 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x31, 0x30, 0x30 }, { 0x31, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31 }, { 0x32, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31 }, { 0x33, 0x31, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30 }, { 0x34, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x31 }, { 0x35, 0x31, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30 }, { 0x36, 0x30, 0x30, 0x31, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30 }, { 0x37, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x31 }, { 0x38, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30 }, { 0x39, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30 }, { 0x41, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31 }, { 0x42, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31 }, { 0x43, 0x31, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30 }, { 0x44, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x31 }, { 0x45, 0x31, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30 }, { 70, 0x30, 0x30, 0x31, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30 }, 10 { 0x47, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x31 }, { 0x48, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30 }, { 0x49, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x31, 0x30, 0x30 }, { 0x4a, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x31, 0x30, 0x30 }, { 0x4b, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31 }, { 0x4c, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31 }, { 0x4d, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30 }, { 0x4e, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x31 }, { 0x4f, 0x31, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30 }, { 80, 0x30, 0x30, 0x31, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30 }, { 0x51, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x31 }, { 0x52, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30 }, { 0x53, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x31, 0x31, 0x30 }, { 0x54, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x31, 0x31, 0x30 }, { 0x55, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31 }, { 0x56, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31 }, 11 { 0x57, 0x31, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30 }, { 0x58, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x31 }, { 0x59, 0x31, 0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30 }, { 90, 0x30, 0x31, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30 }, { 0x2d, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x31 }, { 0x2e, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30 }, { 0x20, 0x30, 0x31, 0x31, 0x30, 0x30, 0x30, 0x31, 0x30, 0x30 }, { 0x2a, 0x30, 0x31, 0x30, 0x30, 0x31, 0x30, 0x31, 0x30, 0x30 }, { 0x24, 0x30, 0x31, 0x30, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30 }, { 0x2f, 0x30, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x31, 0x30 }, { 0x2b, 0x30, 0x31, 0x30, 0x30, 0x30, 0x31, 0x30, 0x31, 0x30 }, { 0x25, 0x30, 0x30, 0x30, 0x31, 0x30, 0x31, 0x30, 0x31, 0x30 } 12 }; 13 //code39合法字符集 [0-9A-Z+-*/%. ] 共43个 14 private byte[] c39_cw = new byte[] { 15 0x30, 0x31, 50, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 70, 16 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 80, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 17 0x57, 0x58, 0x59, 90, 0x2d, 0x2e, 0x20, 0x24, 0x2f, 0x2b, 0x25 18 }; 19 private byte[,] c39_ex = new byte[,] { 20 { 1, 0x24, 0x41 }, { 2, 0x24, 0x42 }, { 3, 0x24, 0x43 }, { 4, 0x24, 0x44 }, { 5, 0x24, 0x45 }, { 6, 0x24, 70 }, { 7, 0x24, 0x47 }, { 8, 0x24, 0x48 }, { 9, 0x24, 0x49 }, { 10, 0x24, 0x4a }, { 11, 0x24, 0x4b }, { 12, 0x24, 0x4c }, { 13, 0x24, 0x4d }, { 14, 0x24, 0x4e }, { 15, 0x24, 0x4f }, { 0x10, 0x24, 80 }, 21 { 0x11, 0x24, 0x51 }, { 0x12, 0x24, 0x52 }, { 0x13, 0x24, 0x53 }, { 20, 0x24, 0x54 }, { 0x15, 0x24, 0x55 }, { 0x16, 0x24, 0x56 }, { 0x17, 0x24, 0x57 }, { 0x18, 0x24, 0x58 }, { 0x19, 0x24, 0x59 }, { 0x1a, 0x24, 90 }, { 0x1b, 0x25, 0x41 }, { 0x1c, 0x25, 0x42 }, { 0x1d, 0x25, 0x43 }, { 30, 0x25, 0x44 }, { 0x1f, 0x25, 0x45 }, { 0x3b, 0x25, 70 }, 22 { 60, 0x25, 0x47 }, { 0x3d, 0x25, 0x48 }, { 0x3e, 0x25, 0x49 }, { 0x3f, 0x25, 0x4a }, { 0x5b, 0x25, 0x4b }, { 0x5c, 0x25, 0x4c }, { 0x5d, 0x25, 0x4d }, { 0x5e, 0x25, 0x4e }, { 0x5f, 0x25, 0x4f }, { 0x7b, 0x25, 80 }, { 0x7c, 0x25, 0x51 }, { 0x7d, 0x25, 0x52 }, { 0x7e, 0x25, 0x53 }, { 0x7f, 0x25, 0x54 }, { 0, 0x25, 0x55 }, { 0x40, 0x25, 0x56 }, 23 { 0x60, 0x25, 0x57 }, { 0x21, 0x2f, 0x41 }, { 0x22, 0x2f, 0x42 }, { 0x23, 0x2f, 0x43 }, { 0x26, 0x2f, 70 }, { 0x27, 0x2f, 0x47 }, { 40, 0x2f, 0x48 }, { 0x29, 0x2f, 0x49 }, { 0x2a, 0x2f, 0x4a }, { 0x2c, 0x2f, 0x4c }, { 0x3a, 0x2f, 90 }, { 0x61, 0x2b, 0x41 }, { 0x62, 0x2b, 0x42 }, { 0x63, 0x2b, 0x43 }, { 100, 0x2b, 0x44 }, { 0x65, 0x2b, 0x45 }, 24 { 0x66, 0x2b, 70 }, { 0x67, 0x2b, 0x47 }, { 0x68, 0x2b, 0x48 }, { 0x69, 0x2b, 0x49 }, { 0x6a, 0x2b, 0x4a }, { 0x6b, 0x2b, 0x4b }, { 0x6c, 0x2b, 0x4c }, { 0x6d, 0x2b, 0x4d }, { 110, 0x2b, 0x4e }, { 0x6f, 0x2b, 0x4f }, { 0x70, 0x2b, 80 }, { 0x71, 0x2b, 0x51 }, { 0x72, 0x2b, 0x52 }, { 0x73, 0x2b, 0x53 }, { 0x74, 0x2b, 0x54 }, { 0x75, 0x2b, 0x55 }, 25 { 0x76, 0x2b, 0x56 }, { 0x77, 0x2b, 0x57 }, { 120, 0x2b, 0x58 }, { 0x79, 0x2b, 0x59 }, { 0x7a, 0x2b, 90 } 26 }; 27 #endregion 28 #region 字段和属性 29 30 31 32 private bool _checksum; 33 private string _dataToEncode; 34 private bool _humanReadable; 35 private string _humanReadableFont; 36 private float _humanReadableSize; 37 private float _marginX; 38 private float _marginY; 39 private float _moduleHeight; 40 private float _moduleWidth; 41 private float _ratio; 42 private float _reduction; 43 private Color _codeBarColor = Color.Black; 44 private bool _isDisplayCheckCode; 45 private string _checkData; 46 private bool _isDisplayStartStopSign; 47 /// <summary> 48 /// 是否检查效验 49 /// </summary> 50 public bool Checksum 51 { 52 get 53 { 54 return _checksum; 55 } 56 set 57 { 58 _checksum = value; 59 } 60 } 61 62 63 /// <summary> 64 /// 要进行编码的数据 65 /// </summary> 66 public string DataToEncode 67 { 68 get 69 { 70 return _dataToEncode; 71 } 72 set 73 { 74 _dataToEncode = value; 75 } 76 } 77 78 79 80 /// <summary> 81 /// 是否显示文本内容 82 /// </summary> 83 public bool HumanReadable 84 { 85 get 86 { 87 return _humanReadable; 88 } 89 set 90 { 91 _humanReadable = value; 92 } 93 } 94 /// <summary> 95 /// 用于显示文本内容的字体 96 /// </summary> 97 public string HumanReadableFont 98 { 99 get100 {101 return _humanReadableFont;102 }103 set104 {105 _humanReadableFont = value;106 }107 }108 /// <summary>109 /// 用于显示文本内容文字的代大小 110 /// </summary>111 public float HumanReadableSize112 {113 get114 {115 return _humanReadableSize;116 }117 set118 {119 _humanReadableSize = value;120 }121 }122 123 /// <summary>124 /// 水平方向边距125 /// 水平方向建议尽量留白126 /// 如果没有留白同时模块宽度较小可能会造成无法识别127 /// </summary>128 public float MarginX129 {130 get131 {132 return _marginX;133 }134 set135 {136 _marginX = value;137 }138 }139 /// <summary>140 /// 垂直方向边距141 /// </summary>142 public float MarginY143 {144 get145 {146 return _marginY;147 }148 set149 {150 _marginY = value;151 }152 }153 154 /// <summary>155 /// 模块高度156 /// </summary>157 public float ModuleHeight158 {159 get160 {161 return _moduleHeight;162 }163 set164 {165 _moduleHeight = value;166 }167 }168 169 /// <summary>170 /// 模块宽度171 /// 模块宽度不应低于0.2646f172 /// 模块宽度过低会造成数据丢失因而读不出数据或者会误读173 /// </summary>174 public float ModuleWidth175 {176 get177 {178 return _moduleWidth;179 }180 set181 {182 _moduleWidth = value;183 }184 }185 186 187 /// <summary>188 /// 放大比率 189 /// </summary>190 public float Ratio191 {192 get193 {194 return _ratio;195 }196 set197 {198 _ratio = value;199 }200 }201 /// <summary>202 /// 缩小203 /// </summary>204 public float Reduction205 {206 get207 {208 return _reduction;209 }210 set211 {212 _reduction = value;213 }214 }215 /// <summary>216 /// 设置条形码的颜色217 /// </summary>218 public Color CodeBarColor219 {220 get221 {222 return _codeBarColor;223 }224 set225 {226 _codeBarColor = value;227 }228 }229 230 /// <summary>231 /// 是否显示效验码232 /// 此属性要在Checksum属性为true的情况下有用233 /// </summary>234 public bool IsDisplayCheckCode235 {236 get { return this._isDisplayCheckCode; }237 set { this._isDisplayCheckCode = value; }238 }239 /// <summary>240 /// 供人识别是否显示起止符241 /// </summary>242 public bool IsDisplayStartStopSign243 {244 get { return this._isDisplayStartStopSign; }245 set { this._isDisplayStartStopSign = value; }246 }247 #endregion248 /// <summary>249 /// 默认构造函数250 /// 初始化251 /// </summary>252 public CSharpCode39()253 {254 this.initData();255 256 }257 public CSharpCode39(string dataToEncode)258 {259 this.initData();260 this._dataToEncode = dataToEncode;261 }262 /// <summary>263 /// 默认构造函数264 /// 初始化数据265 /// </summary>266 private void initData()267 {268 this._humanReadableFont = "Arial";269 this._humanReadableSize = 10f;270 this._codeBarColor = Color.Black;271 this._moduleHeight = 15f;272 this._moduleWidth = 0.35f;273 this._ratio = 3f;274 this._marginX =2;275 this._marginY =2;276 this._checksum = true;277 this._isDisplayCheckCode = false;278 this._isDisplayStartStopSign = false;279 }280 private char[] _bitpattern_c39(string rawdata, ref int finalLength)281 {282 //0x27 39 283 //0x50 80284 if ((rawdata.Length == 0) || (rawdata.Length > 0x50 /*0x27*/))285 {286 return null;287 }288 for (int i = 0; i < rawdata.Length; i++)289 {290 if ((rawdata[i] == '\0') || (rawdata[i] > '\x007f'))291 {292 return null;293 }294 }295 byte[] data = processTilde(rawdata);296 if (data.Length == 0)297 {298 return null;299 }300 byte[] buffer2 = this.processExtended(data);301 if ((buffer2.Length == 0) || (buffer2.Length > /*40*/80))302 {303 return null;304 }305 finalLength = this._checksum ? ((buffer2.Length + 2) + 1) : (buffer2.Length + 2);306 return this.getPattern_c39(buffer2);307 }308 309 310 /// <summary>311 /// 计算效验值312 /// </summary>313 /// <param name="data"></param>314 /// <param name="len"></param>315 /// <returns></returns>316 private byte _checksum_c39(byte[] data, int len)317 {318 //0x2b 43319 //字符值的总和除以合法字符集的个数43 取余数 余数在合法字符数组中对应的数值就是效验值320 int num2 = 0;321 for (int i = 1; i < len; i++)322 {323 num2 += this.valueFromCharacter(data[i]);324 }325 return this.c39_cw[num2 % 0x2b];326 }327 328 private char[] Code39_bitpattern(string dataToEncode)329 {330 int finalLength = 0;331 return this._bitpattern_c39(dataToEncode, ref finalLength);332 }333 /// <summary>334 /// 获得Code39条码图片335 /// </summary>336 /// <param name="resolution"></param>337 /// <returns></returns>338 public Bitmap getBitmapImage(float resolution)339 {340 return Code39_createCode(resolution);341 }342 343 private Bitmap Code39_createCode(float resolution)344 {345 int num6;346 int finalLength = 0;347 char[] chArray = this._bitpattern_c39(DataToEncode, ref finalLength);348 if (chArray == null)349 {350 return null;351 }352 float fontsize = this._humanReadable ? (0.3527778f * this._humanReadableSize) : 0f;353 // float num3 = (7f * ModuleWidth) + ((3f * Ratio) * ModuleWidth);354 float num3 = (7f * this._moduleWidth) + ((3f * this._ratio) * this._moduleWidth);355 float width = (finalLength * num3) + (2f * this._marginX);356 float height = (this._moduleHeight + (2f * this._marginY)) + fontsize;357 width *= resolution / 25.4f;358 height *= resolution / 25.4f;359 Bitmap image = new Bitmap((int)width, (int)height, PixelFormat.Format32bppPArgb);360 image.SetResolution(resolution, resolution);361 //image.SetResolution(300, 300);362 Graphics g = Graphics.FromImage(image);363 g.Clear(Color.White);364 g.PageUnit = GraphicsUnit.Millimeter; //以毫米为度量单位365 g.FillRectangle(new SolidBrush(Color.White), new Rectangle(0, 0, /*(int)width*/image.Width, /*(int)height*/image.Height));366 //new Pen(Color.Black, 2f);367 //new SolidBrush(Color.White);368 SolidBrush brush = new SolidBrush(Color.Black);369 if (resolution < 300f)370 {371 //g.TextRenderingHint = TextRenderingHint.AntiAlias;372 //g.SmoothingMode = SmoothingMode.AntiAlias;373 g.CompositingQuality = CompositingQuality.HighQuality;374 //g.SmoothingMode = SmoothingMode.HighQuality;375 g.InterpolationMode = InterpolationMode.HighQualityBicubic;376 g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;377 }378 float num7 = 0f;379 for (num6 = 0; num6 < chArray.Length; num6++)380 {381 if (chArray[num6] == '0')382 {383 if ((num6 & 1) != 1)384 {385 RectangleF rect = new RectangleF(MarginX + num7, MarginY, ModuleWidth, ModuleHeight);386 MakeBar(g, rect, Reduction);387 }388 num7 += 1f * ModuleWidth;389 }390 else391 {392 if ((num6 & 1) != 1)393 {394 RectangleF ef2 = new RectangleF(MarginX + num7, MarginY, Ratio * ModuleWidth, ModuleHeight);395 MakeBar(g, ef2, Reduction);396 }397 num7 += Ratio * ModuleWidth;398 }399 }400 401 #region 供人识别内容402 if (this._humanReadable)403 {404 #region 保留405 /*byte[] buffer2 = processTilde(this._dataToEncode);406 int index = 0;407 List<byte> arr = new List<byte>();408 for (num6 = 0; num6 < buffer2.Length; num6++)409 {410 //0x20 32 0x7e 126411 if ((buffer2[num6] >= 0x20) && (buffer2[num6] <= 0x7e))412 {413 arr.Add(buffer2[num6]);414 }415 }416 byte[] bytes = new byte[arr.Count];417 for (int i = 0; i < arr.Count; i++)418 {419 bytes[i] = arr[i];420 }421 index = arr.Count;422 423 //string text = new ASCIIEncoding().GetString(bytes, 0, index);424 */ 425 #endregion426 string text = this._dataToEncode;427 if (this._isDisplayCheckCode&&!string.IsNullOrEmpty(this._checkData)) {428 text += this._checkData;429 }430 if (this._isDisplayStartStopSign)431 {432 text = "*" + text + "*";433 }434 Font font = new Font(this._humanReadableFont, this._humanReadableSize);435 //g.DrawString(text, font, brush, new PointF(MarginX, MarginY + ModuleHeight));436 //新增字符串格式437 var drawFormat = new StringFormat { Alignment = StringAlignment.Center };438 float inpix = image.Width / resolution;//根据DPi求出 英寸数439 float widthmm = inpix * 25.4f; //有每英寸像素求出毫米440 //g.DrawString(text, font, Brushes.Black, width / 2, height - 14, drawFormat);441 g.DrawString(text, font, /*Brushes.Black*/brush, new PointF(/*MarginX*/(int)(widthmm / 2), MarginY + ModuleHeight + 1), drawFormat);442 443 }444 445 #endregion446 447 448 449 return image;450 }451 452 /// <summary>453 /// 进行图形填充454 /// </summary>455 /// <param name="g"></param>456 /// <param name="rect"></param>457 /// <param name="reduction"></param>458 private void MakeBar(Graphics g, RectangleF rect, float reduction)459 {460 MakeBar(g, rect, reduction, Color.Black);461 }462 463 /// <summary>464 /// 进行图形填充465 /// </summary>466 /// <param name="g"></param>467 /// <param name="rect"></param>468 /// <param name="reduction"></param>469 /// <param name="brushColor"></param>470 private void MakeBar(Graphics g, RectangleF rect, float reduction, Color brushColor)471 {472 float num = rect.Width * (reduction / 200f);473 float num2 = rect.Width - (rect.Width * (reduction / 200f));474 475 RectangleF ef = new RectangleF476 {477 X = rect.X + num,478 Y = rect.Y,479 Width = num2,480 Height = rect.Height481 };482 SolidBrush brush = new SolidBrush(brushColor);483 g.FillRectangle(brush, ef);484 485 }486 487 private char[] getPattern_c39(byte[] data)488 { //0x2a 42为*489 //int num = 0x27;490 int num = 80;491 byte[] buffer = new byte[num + 1];492 buffer[0] = 0x2a;493 int index = 1;494 for (int i = 0; i < data.Length; i++)495 {496 buffer[index] = data[i];497 index++;498 }499 if (Checksum)500 {501 buffer[index] = this._checksum_c39(buffer, index);502 if (_isDisplayCheckCode)503 {504 this._checkData = ((char)buffer[index]).ToString();505 }506 index++;507 }508 buffer[index] = 0x2a;509 index++;510 char[] chArray = new char[index * 10];511 int num5 = 0;512 for (int j = 0; j < index; j++)513 {514 byte c = buffer[j];515 int num9 = this.indexFromCharacter(c);516 for (int k = 0; k < 9; k++)517 {518 chArray[num5] = (char)this.c39_bp[num9, k + 1];519 num5++;520 }521 chArray[num5] = '0';522 num5++;523 }524 return chArray;525 }526 527 private int indexFromCharacter(byte c)528 {529 //0x2c==44530 for (int i = 0; i < 0x2c; i++)531 {532 if (this.c39_bp[i, 0] == c)533 {534 return i;535 }536 }537 return -1;538 }539 540 541 private byte[] processExtended(byte[] data)542 {543 //0x25 38544 //0x4F 79 0x4E 78545 //int num = 0x4F;546 int num = data.Length - 1;547 byte[] sourceArray = new byte[num + 1];548 int index = 0;549 for (int i = 0; i < data.Length; i++)550 {551 byte c = data[i];552 if (this.valueFromCharacter(c) != -1)553 {554 sourceArray[index] = c;555 index++;556 }557 else558 {559 byte num5 = 0;560 byte num6 = 0;561 if (this.valuesFromExtended(c, ref num5, ref num6))562 {563 sourceArray[index] = num5;564 sourceArray[index + 1] = num6;565 index += 2;566 }567 }568 }569 byte[] destinationArray = new byte[index];570 Array.Copy(sourceArray, destinationArray, index);571 return destinationArray;572 }573 574 /// <summary>575 /// 返回指定字符在code39合法字符数组中对应的索引576 /// </summary>577 /// <param name="c"></param>578 /// <returns></returns>579 private int valueFromCharacter(byte c)580 {581 //c39_cw为数组,保存的为合法的字符集信息[0-9A-Z+-*/%. ] 共43个582 //如果存在这个字符就返回c39_cw对应的索引583 for (int i = 0; i < /*0x2b*/this.c39_cw.Length; i++)584 {585 if (this.c39_cw[i] == c)586 {587 return i;588 }589 }590 return -1;591 }592 593 /// <summary>594 /// 判断字符集是否存在Extended595 /// </summary>596 /// <param name="c"></param>597 /// <param name="v1"></param>598 /// <param name="v2"></param>599 /// <returns></returns>600 private bool valuesFromExtended(byte c, ref byte v1, ref byte v2)601 {602 //0x55 85603 for (int i = 0; i < 0x55; i++)604 {605 if (this.c39_ex[i, 0] == c)606 {607 v1 = this.c39_ex[i, 1];608 v2 = this.c39_ex[i, 2];609 return true;610 }611 }612 return false;613 }614 615 private byte[] processTilde(string rawdata)616 {617 byte[] sourceArray = new byte[rawdata.Length];618 int index = 0;619 for (int i = 0; i < rawdata.Length; i++)620 {621 if (rawdata[i] != '~')622 {623 sourceArray[index] = (byte)rawdata[i];624 index++;625 }626 else if ((i + 3) < rawdata.Length)627 {628 string str = new string(new char[] { rawdata[i + 1], rawdata[i + 2], rawdata[i + 3] });629 int num3 = Convert.ToInt32(str, 10);630 if ((num3 > 0) && (num3 <= 0xff))631 {632 sourceArray[index] = (byte)num3;633 index++;634 }635 if (num3 == 0x3e7)636 {637 sourceArray[index] = 0x86;638 index++;639 }640 i += 3;641 }642 else643 {644 sourceArray[index] = (byte)rawdata[i];645 index++;646 }647 }648 byte[] destinationArray = new byte[index];649 Array.Copy(sourceArray, destinationArray, index);650 return destinationArray;651 }652 }
WinForm的例子下载:点击下载DEMO
原标题:C#生成Code39条形码【非条形码字体】
关键词:C#