C#生成Code39(extend)条形码实例
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:
/// <summary>
/// Code39一维码生成类
/// </summary>
public class CSharpCode39
{
#region 数据码
private byte[,] c39_bp = new byte[,] {
{ 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 },
{ 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 },
{ 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 }
};
//code39合法字符集 [0-9A-Z+-*/%. ] 共43个
private byte[] c39_cw = new byte[] {
0x30, 0x31, 50, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 70,
0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 80, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56,
0x57, 0x58, 0x59, 90, 0x2d, 0x2e, 0x20, 0x24, 0x2f, 0x2b, 0x25
};
private byte[,] c39_ex = new byte[,] {
{ 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 },
{ 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 },
{ 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 },
{ 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 },
{ 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 },
{ 0x76, 0x2b, 0x56 }, { 0x77, 0x2b, 0x57 }, { 120, 0x2b, 0x58 }, { 0x79, 0x2b, 0x59 }, { 0x7a, 0x2b, 90 }
};
#endregion
#region 字段和属性
private bool _checksum;
private string _dataToEncode;
private bool _humanReadable;
private string _humanReadableFont;
private float _humanReadableSize;
private float _marginX;
private float _marginY;
private float _moduleHeight;
private float _moduleWidth;
private float _ratio;
private float _reduction;
private Color _codeBarColor = Color.Black;
private bool _isDisplayCheckCode;
private string _checkData;
private bool _isDisplayStartStopSign;
/// <summary>
/// 是否检查效验
/// </summary>
public bool Checksum
{
get
{
return _checksum;
}
set
{
_checksum = value;
}
}
/// <summary>
/// 要进行编码的数据
/// </summary>
public string DataToEncode
{
get
{
return _dataToEncode;
}
set
{
_dataToEncode = value;
}
}
/// <summary>
/// 是否显示文本内容
/// </summary>
public bool HumanReadable
{
get
{
return _humanReadable;
}
set
{
_humanReadable = value;
}
}
/// <summary>
/// 用于显示文本内容的字体
/// </summary>
public string HumanReadableFont
{
get
{
return _humanReadableFont;
}
set
{
_humanReadableFont = value;
}
}
/// <summary>
/// 用于显示文本内容文字的代大小
/// </summary>
public float HumanReadableSize
{
get
{
return _humanReadableSize;
}
set
{
_humanReadableSize = value;
}
}
/// <summary>
/// 水平方向边距
/// 水平方向建议尽量留白
/// 如果没有留白同时模块宽度较小可能会造成无法识别
/// </summary>
public float MarginX
{
get
{
return _marginX;
}
set
{
_marginX = value;
}
}
/// <summary>
/// 垂直方向边距
/// </summary>
public float MarginY
{
get
{
return _marginY;
}
set
{
_marginY = value;
}
}
/// <summary>
/// 模块高度(mm)
/// </summary>
public float ModuleHeight
{
get
{
return _moduleHeight;
}
set
{
_moduleHeight = value;
}
}
/// <summary>
/// 模块宽度(mm)
/// 模块宽度不应低于0.2646f
/// 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
/// </summary>
public float ModuleWidth
{
get
{
return _moduleWidth;
}
set
{
_moduleWidth = value;
}
}
/// <summary>
/// 放大比率
/// </summary>
public float Ratio
{
get
{
return _ratio;
}
set
{
_ratio = value;
}
}
/// <summary>
/// 缩小
/// </summary>
public float Reduction
{
get
{
return _reduction;
}
set
{
_reduction = value;
}
}
/// <summary>
/// 设置条形码的颜色
/// </summary>
public Color CodeBarColor
{
get
{
return _codeBarColor;
}
set
{
_codeBarColor = value;
}
}
/// <summary>
/// 是否显示效验码
/// 此属性要在Checksum属性为true的情况下有用
/// </summary>
public bool IsDisplayCheckCode
{
get { return this._isDisplayCheckCode; }
set { this._isDisplayCheckCode = value; }
}
/// <summary>
/// 供人识别是否显示起止符
/// </summary>
public bool IsDisplayStartStopSign
{
get { return this._isDisplayStartStopSign; }
set { this._isDisplayStartStopSign = value; }
}
#endregion
/// <summary>
/// 默认构造函数
/// 初始化
/// </summary>
public CSharpCode39()
{
this.initData();
}
public CSharpCode39(string dataToEncode)
{
this.initData();
this._dataToEncode = dataToEncode;
}
/// <summary>
/// 默认构造函数
/// 初始化数据
/// </summary>
private void initData()
{
this._humanReadableFont = "Arial";
this._humanReadableSize = 10f;
this._codeBarColor = Color.Black;
this._moduleHeight = 15f;//模块高度毫米
this._moduleWidth = 0.35f;//模块宽度毫米
this._ratio = 3f;
this._marginX =2;
this._marginY =2;
this._checksum = true;
this._isDisplayCheckCode = false;
this._isDisplayStartStopSign = false;
}
private char[] _bitpattern_c39(string rawdata, ref int finalLength)
{
//0x27 39
//0x50 80
if ((rawdata.Length == 0) || (rawdata.Length > 0x50 /*0x27*/))
{
return null;
}
for (int i = 0; i < rawdata.Length; i++)
{
if ((rawdata[i] == '\0') || (rawdata[i] > '\x007f'))
{
return null;
}
}
byte[] data = processTilde(rawdata);
if (data.Length == 0)
{
return null;
}
byte[] buffer2 = this.processExtended(data);
if ((buffer2.Length == 0) || (buffer2.Length > /*40*/80))
{
return null;
}
finalLength = this._checksum ? ((buffer2.Length + 2) + 1) : (buffer2.Length + 2);
return this.getPattern_c39(buffer2);
}
/// <summary>
/// 计算效验值
/// </summary>
/// <param name="data"></param>
/// <param name="len"></param>
/// <returns></returns>
private byte _checksum_c39(byte[] data, int len)
{
//0x2b 43
//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
int num2 = 0;
for (int i = 1; i < len; i++)
{
num2 += this.valueFromCharacter(data[i]);
}
return this.c39_cw[num2 % 0x2b];
}
private char[] Code39_bitpattern(string dataToEncode)
{
int finalLength = 0;
return this._bitpattern_c39(dataToEncode, ref finalLength);
}
/// <summary>
/// 获得Code39条码图片
/// </summary>
/// <param name="resolution">DPI</param>
/// <returns></returns>
public Bitmap getBitmapImage(float resolution)
{
return Code39_createCode(resolution);
}
private Bitmap Code39_createCode(float resolution)
{
int num6;
int finalLength = 0;
char[] chArray = this._bitpattern_c39(DataToEncode, ref finalLength);
if (chArray == null)
{
return null;
}
float fontsize = this._humanReadable ? (0.3527778f * this._humanReadableSize) : 0f;
// float num3 = (7f * ModuleWidth) + ((3f * Ratio) * ModuleWidth);
float num3 = (7f * this._moduleWidth) + ((3f * this._ratio) * this._moduleWidth);
float width = (finalLength * num3) + (2f * this._marginX);
float height = (this._moduleHeight + (2f * this._marginY)) + fontsize;
width *= resolution / 25.4f;
height *= resolution / 25.4f;
Bitmap image = new Bitmap((int)width, (int)height, PixelFormat.Format32bppPArgb);
image.SetResolution(resolution, resolution);
//image.SetResolution(300, 300);
Graphics g = Graphics.FromImage(image);
g.Clear(Color.White);
g.PageUnit = GraphicsUnit.Millimeter; //以毫米为度量单位
g.FillRectangle(new SolidBrush(Color.White), new Rectangle(0, 0, /*(int)width*/image.Width, /*(int)height*/image.Height));
//new Pen(Color.Black, 2f);
//new SolidBrush(Color.White);
SolidBrush brush = new SolidBrush(Color.Black);
if (resolution < 300f)
{
//g.TextRenderingHint = TextRenderingHint.AntiAlias;
//g.SmoothingMode = SmoothingMode.AntiAlias;
g.CompositingQuality = CompositingQuality.HighQuality;
//g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
}
float num7 = 0f;
for (num6 = 0; num6 < chArray.Length; num6++)
{
if (chArray[num6] == '0')
{
if ((num6 & 1) != 1)
{
RectangleF rect = new RectangleF(MarginX + num7, MarginY, ModuleWidth, ModuleHeight);
MakeBar(g, rect, Reduction);
}
num7 += 1f * ModuleWidth;
}
else
{
if ((num6 & 1) != 1)
{
RectangleF ef2 = new RectangleF(MarginX + num7, MarginY, Ratio * ModuleWidth, ModuleHeight);
MakeBar(g, ef2, Reduction);
}
num7 += Ratio * ModuleWidth;
}
}
#region 供人识别内容
if (this._humanReadable)
{
#region 保留
/*byte[] buffer2 = processTilde(this._dataToEncode);
int index = 0;
List<byte> arr = new List<byte>();
for (num6 = 0; num6 < buffer2.Length; num6++)
{
//0x20 32 0x7e 126
if ((buffer2[num6] >= 0x20) && (buffer2[num6] <= 0x7e))
{
arr.Add(buffer2[num6]);
}
}
byte[] bytes = new byte[arr.Count];
for (int i = 0; i < arr.Count; i++)
{
bytes[i] = arr[i];
}
index = arr.Count;
//string text = new ASCIIEncoding().GetString(bytes, 0, index);
*/
#endregion
string text = this._dataToEncode;
if (this._isDisplayCheckCode&&!string.IsNullOrEmpty(this._checkData)) {
text += this._checkData;
}
if (this._isDisplayStartStopSign)
{
text = "*" + text + "*";
}
Font font = new Font(this._humanReadableFont, this._humanReadableSize);
//g.DrawString(text, font, brush, new PointF(MarginX, MarginY + ModuleHeight));
//新增字符串格式
var drawFormat = new StringFormat { Alignment = StringAlignment.Center };
float inpix = image.Width / resolution;//根据DPi求出 英寸数
float widthmm = inpix * 25.4f; //有每英寸像素求出毫米
//g.DrawString(text, font, Brushes.Black, width / 2, height - 14, drawFormat);
g.DrawString(text, font, /*Brushes.Black*/brush, new PointF(/*MarginX*/(int)(widthmm / 2), MarginY + ModuleHeight + 1), drawFormat);
}
#endregion
return image;
}
/// <summary>
/// 进行图形填充
/// </summary>
/// <param name="g"></param>
/// <param name="rect"></param>
/// <param name="reduction"></param>
private void MakeBar(Graphics g, RectangleF rect, float reduction)
{
MakeBar(g, rect, reduction,this._codeBarColor);
}
/// <summary>
/// 进行图形填充
/// </summary>
/// <param name="g"></param>
/// <param name="rect"></param>
/// <param name="reduction"></param>
/// <param name="brushColor"></param>
private void MakeBar(Graphics g, RectangleF rect, float reduction, Color brushColor)
{
float num = rect.Width * (reduction / 200f);
float num2 = rect.Width - (rect.Width * (reduction / 200f));
RectangleF ef = new RectangleF
{
X = rect.X + num,
Y = rect.Y,
Width = num2,
Height = rect.Height
};
SolidBrush brush = new SolidBrush(brushColor);
g.FillRectangle(brush, ef);
}
private char[] getPattern_c39(byte[] data)
{ //0x2a 42为*
//int num = 0x27;
int num = 80;
byte[] buffer = new byte[num + 1];
buffer[0] = 0x2a;
int index = 1;
for (int i = 0; i < data.Length; i++)
{
buffer[index] = data[i];
index++;
}
if (Checksum)
{
buffer[index] = this._checksum_c39(buffer, index);
if (_isDisplayCheckCode)
{
this._checkData = ((char)buffer[index]).ToString();
}
index++;
}
buffer[index] = 0x2a;
index++;
char[] chArray = new char[index * 10];
int num5 = 0;
for (int j = 0; j < index; j++)
{
byte c = buffer[j];
int num9 = this.indexFromCharacter(c);
for (int k = 0; k < 9; k++)
{
chArray[num5] = (char)this.c39_bp[num9, k + 1];
num5++;
}
chArray[num5] = '0';
num5++;
}
return chArray;
}
private int indexFromCharacter(byte c)
{
//0x2c==44
for (int i = 0; i < 0x2c; i++)
{
if (this.c39_bp[i, 0] == c)
{
return i;
}
}
return -1;
}
private byte[] processExtended(byte[] data)
{
//0x25 38
//0x4F 79 0x4E 78
//int num = 0x4F;
int num = data.Length - 1;
byte[] sourceArray = new byte[num + 1];
int index = 0;
for (int i = 0; i < data.Length; i++)
{
byte c = data[i];
if (this.valueFromCharacter(c) != -1)
{
sourceArray[index] = c;
index++;
}
else
{
byte num5 = 0;
byte num6 = 0;
if (this.valuesFromExtended(c, ref num5, ref num6))
{
sourceArray[index] = num5;
sourceArray[index + 1] = num6;
index += 2;
}
}
}
byte[] destinationArray = new byte[index];
Array.Copy(sourceArray, destinationArray, index);
return destinationArray;
}
/// <summary>
/// 返回指定字符在code39合法字符数组中对应的索引
/// </summary>
/// <param name="c"></param>
/// <returns></returns>
private int valueFromCharacter(byte c)
{
//c39_cw为数组，保存的为合法的字符集信息[0-9A-Z+-*/%. ] 共43个
//如果存在这个字符就返回c39_cw对应的索引
for (int i = 0; i < /*0x2b*/this.c39_cw.Length; i++)
{
if (this.c39_cw[i] == c)
{
return i;
}
}
return -1;
}
/// <summary>
/// 判断字符集是否存在Extended
/// </summary>
/// <param name="c"></param>
/// <param name="v1"></param>
/// <param name="v2"></param>
/// <returns></returns>
private bool valuesFromExtended(byte c, ref byte v1, ref byte v2)
{
//0x55 85
for (int i = 0; i < 0x55; i++)
{
if (this.c39_ex[i, 0] == c)
{
v1 = this.c39_ex[i, 1];
v2 = this.c39_ex[i, 2];
return true;
}
}
return false;
}
private byte[] processTilde(string rawdata)
{
byte[] sourceArray = new byte[rawdata.Length];
int index = 0;
for (int i = 0; i < rawdata.Length; i++)
{
if (rawdata[i] != '~')
{
sourceArray[index] = (byte)rawdata[i];
index++;
}
else if ((i + 3) < rawdata.Length)
{
string str = new string(new char[] { rawdata[i + 1], rawdata[i + 2], rawdata[i + 3] });
int num3 = Convert.ToInt32(str, 10);
if ((num3 > 0) && (num3 <= 0xff))
{
sourceArray[index] = (byte)num3;
index++;
}
if (num3 == 0x3e7)
{
sourceArray[index] = 0x86;
index++;
}
i += 3;
}
else
{
sourceArray[index] = (byte)rawdata[i];
index++;
}
}
byte[] destinationArray = new byte[index];
Array.Copy(sourceArray, destinationArray, index);
return destinationArray;
}
}
这个方法是根据DPI以及数据模块的高宽来确定条码的实际高宽。模块的宽度以毫米（mm）来算。类中的getBitmapImage方法的一个参数getBitmapImage为DPI。安卓用户安装平时常用的扫码软件即可做识别测试。就识别率来说还是可以的，扫描枪绝对是可以扫的出的。同时使用过MessagingToolkit.Barcode进行解码测试，万张无一误读。
C#生成code128条形码实例
CODE128条形码是广泛应用在企业内部管理、生产流程、物流控制系统方面的条码码制，由于其优良的特性在管理信息系统的设计中被广泛使用，CODE128码是应用最广泛的条码码制之一。
CODE128条形码是1981年引入的一种高密度条码，CODE128 码可表示从 ASCII 0 到ASCII 127 共128个字符，故称128码。其中包含了数字、字母和符号字符。
using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
namespace Code
{
class BarCode
{
public class Code128
{
private DataTable m_Code128 = new DataTable();
private uint m_Height = 40;
/// <summary>
/// 高度
/// </summary>
public uint Height { get { return m_Height; } set { m_Height = value; } }
private Font m_ValueFont = null;
/// <summary>
/// 是否显示可见号码 如果为NULL不显示号码
/// </summary>
public Font ValueFont { get { return m_ValueFont; } set { m_ValueFont = value; } }
private byte m_Magnify = 0;
/// <summary>
/// 放大倍数
/// </summary>
public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }
/// <summary>
/// 条码类别
/// </summary>
public enum Encode
{
Code128A,
Code128B,
Code128C,
EAN128
}
public Code128()
{
m_Code128.Columns.Add("ID");
m_Code128.Columns.Add("Code128A");
m_Code128.Columns.Add("Code128B");
m_Code128.Columns.Add("Code128C");
m_Code128.Columns.Add("BandCode");
m_Code128.CaseSensitive = true;
#region 数据表
m_Code128.Rows.Add("0", " ", " ", "00", "212222");
m_Code128.Rows.Add("1", "!", "!", "01", "222122");
m_Code128.Rows.Add("2", "\"", "\"", "02", "222221");
m_Code128.Rows.Add("3", "#", "#", "03", "121223");
m_Code128.Rows.Add("4", "$", "$", "04", "121322");
m_Code128.Rows.Add("5", "%", "%", "05", "131222");
m_Code128.Rows.Add("6", "&", "&", "06", "122213");
m_Code128.Rows.Add("7", "'", "'", "07", "122312");
m_Code128.Rows.Add("8", "(", "(", "08", "132212");
m_Code128.Rows.Add("9", ")", ")", "09", "221213");
m_Code128.Rows.Add("10", "*", "*", "10", "221312");
m_Code128.Rows.Add("11", "+", "+", "11", "231212");
m_Code128.Rows.Add("12", ",", ",", "12", "112232");
m_Code128.Rows.Add("13", "-", "-", "13", "122132");
m_Code128.Rows.Add("14", ".", ".", "14", "122231");
m_Code128.Rows.Add("15", "/", "/", "15", "113222");
m_Code128.Rows.Add("16", "0", "0", "16", "123122");
m_Code128.Rows.Add("17", "1", "1", "17", "123221");
m_Code128.Rows.Add("18", "2", "2", "18", "223211");
m_Code128.Rows.Add("19", "3", "3", "19", "221132");
m_Code128.Rows.Add("20", "4", "4", "20", "221231");
m_Code128.Rows.Add("21", "5", "5", "21", "213212");
m_Code128.Rows.Add("22", "6", "6", "22", "223112");
m_Code128.Rows.Add("23", "7", "7", "23", "312131");
m_Code128.Rows.Add("24", "8", "8", "24", "311222");
m_Code128.Rows.Add("25", "9", "9", "25", "321122");
m_Code128.Rows.Add("26", ":", ":", "26", "321221");
m_Code128.Rows.Add("27", ";", ";", "27", "312212");
m_Code128.Rows.Add("28", "<", "<", "28", "322112");
m_Code128.Rows.Add("29", "=", "=", "29", "322211");
m_Code128.Rows.Add("30", ">", ">", "30", "212123");
m_Code128.Rows.Add("31", "?", "?", "31", "212321");
m_Code128.Rows.Add("32", "@", "@", "32", "232121");
m_Code128.Rows.Add("33", "A", "A", "33", "111323");
m_Code128.Rows.Add("34", "B", "B", "34", "131123");
m_Code128.Rows.Add("35", "C", "C", "35", "131321");
m_Code128.Rows.Add("36", "D", "D", "36", "112313");
m_Code128.Rows.Add("37", "E", "E", "37", "132113");
m_Code128.Rows.Add("38", "F", "F", "38", "132311");
m_Code128.Rows.Add("39", "G", "G", "39", "211313");
m_Code128.Rows.Add("40", "H", "H", "40", "231113");
m_Code128.Rows.Add("41", "I", "I", "41", "231311");
m_Code128.Rows.Add("42", "J", "J", "42", "112133");
m_Code128.Rows.Add("43", "K", "K", "43", "112331");
m_Code128.Rows.Add("44", "L", "L", "44", "132131");
m_Code128.Rows.Add("45", "M", "M", "45", "113123");
m_Code128.Rows.Add("46", "N", "N", "46", "113321");
m_Code128.Rows.Add("47", "O", "O", "47", "133121");
m_Code128.Rows.Add("48", "P", "P", "48", "313121");
m_Code128.Rows.Add("49", "Q", "Q", "49", "211331");
m_Code128.Rows.Add("50", "R", "R", "50", "231131");
m_Code128.Rows.Add("51", "S", "S", "51", "213113");
m_Code128.Rows.Add("52", "T", "T", "52", "213311");
m_Code128.Rows.Add("53", "U", "U", "53", "213131");
m_Code128.Rows.Add("54", "V", "V", "54", "311123");
m_Code128.Rows.Add("55", "W", "W", "55", "311321");
m_Code128.Rows.Add("56", "X", "X", "56", "331121");
m_Code128.Rows.Add("57", "Y", "Y", "57", "312113");
m_Code128.Rows.Add("58", "Z", "Z", "58", "312311");
m_Code128.Rows.Add("59", "[", "[", "59", "332111");
m_Code128.Rows.Add("60", "\\", "\\", "60", "314111");
m_Code128.Rows.Add("61", "]", "]", "61", "221411");
m_Code128.Rows.Add("62", "^", "^", "62", "431111");
m_Code128.Rows.Add("63", "_", "_", "63", "111224");
m_Code128.Rows.Add("64", "NUL", "`", "64", "111422");
m_Code128.Rows.Add("65", "SOH", "a", "65", "121124");
m_Code128.Rows.Add("66", "STX", "b", "66", "121421");
m_Code128.Rows.Add("67", "ETX", "c", "67", "141122");
m_Code128.Rows.Add("68", "EOT", "d", "68", "141221");
m_Code128.Rows.Add("69", "ENQ", "e", "69", "112214");
m_Code128.Rows.Add("70", "ACK", "f", "70", "112412");
m_Code128.Rows.Add("71", "BEL", "g", "71", "122114");
m_Code128.Rows.Add("72", "BS", "h", "72", "122411");
m_Code128.Rows.Add("73", "HT", "i", "73", "142112");
m_Code128.Rows.Add("74", "LF", "j", "74", "142211");
m_Code128.Rows.Add("75", "VT", "k", "75", "241211");
m_Code128.Rows.Add("76", "FF", "I", "76", "221114");
m_Code128.Rows.Add("77", "CR", "m", "77", "413111");
m_Code128.Rows.Add("78", "SO", "n", "78", "241112");
m_Code128.Rows.Add("79", "SI", "o", "79", "134111");
m_Code128.Rows.Add("80", "DLE", "p", "80", "111242");
m_Code128.Rows.Add("81", "DC1", "q", "81", "121142");
m_Code128.Rows.Add("82", "DC2", "r", "82", "121241");
m_Code128.Rows.Add("83", "DC3", "s", "83", "114212");
m_Code128.Rows.Add("84", "DC4", "t", "84", "124112");
m_Code128.Rows.Add("85", "NAK", "u", "85", "124211");
m_Code128.Rows.Add("86", "SYN", "v", "86", "411212");
m_Code128.Rows.Add("87", "ETB", "w", "87", "421112");
m_Code128.Rows.Add("88", "CAN", "x", "88", "421211");
m_Code128.Rows.Add("89", "EM", "y", "89", "212141");
m_Code128.Rows.Add("90", "SUB", "z", "90", "214121");
m_Code128.Rows.Add("91", "ESC", "{", "91", "412121");
m_Code128.Rows.Add("92", "FS", "|", "92", "111143");
m_Code128.Rows.Add("93", "GS", "}", "93", "111341");
m_Code128.Rows.Add("94", "RS", "~", "94", "131141");
m_Code128.Rows.Add("95", "US", "DEL", "95", "114113");
m_Code128.Rows.Add("96", "FNC3", "FNC3", "96", "114311");
m_Code128.Rows.Add("97", "FNC2", "FNC2", "97", "411113");
m_Code128.Rows.Add("98", "SHIFT", "SHIFT", "98", "411311");
m_Code128.Rows.Add("99", "CODEC", "CODEC", "99", "113141");
m_Code128.Rows.Add("100", "CODEB", "FNC4", "CODEB", "114131");
m_Code128.Rows.Add("101", "FNC4", "CODEA", "CODEA", "311141");
m_Code128.Rows.Add("102", "FNC1", "FNC1", "FNC1", "411131");
m_Code128.Rows.Add("103", "StartA", "StartA", "StartA", "211412");
m_Code128.Rows.Add("104", "StartB", "StartB", "StartB", "211214");
m_Code128.Rows.Add("105", "StartC", "StartC", "StartC", "211232");
m_Code128.Rows.Add("106", "Stop", "Stop", "Stop", "2331112");
#endregion
}
/// <summary>
/// 获取128图形
/// </summary>
/// <param name="p_Text">文字</param>
/// <param name="p_Code">编码</param>
/// <returns>图形</returns>
public Bitmap GetCodeImage(string p_Text, Encode p_Code)
{
string _ViewText = p_Text;
string _Text = "";
IList<int> _TextNumb = new List<int>();
int _Examine = 0; //首位
switch (p_Code)
{
case Encode.Code128C:
_Examine = 105;
if (!((p_Text.Length & 1) == 0)) throw new Exception("128C长度必须是偶数");
while (p_Text.Length != 0)
{
int _Temp = 0;
try
{
int _CodeNumb128 = Int32.Parse(p_Text.Substring(0, 2));
}
catch
{
throw new Exception("128C必须是数字！");
}
_Text += GetValue(p_Code, p_Text.Substring(0, 2), ref _Temp);
_TextNumb.Add(_Temp);
p_Text = p_Text.Remove(0, 2);
}
break;
case Encode.EAN128:
_Examine = 105;
if (!((p_Text.Length & 1) == 0)) throw new Exception("EAN128长度必须是偶数");
_TextNumb.Add(102);
_Text += "411131";
while (p_Text.Length != 0)
{
int _Temp = 0;
try
{
int _CodeNumb128 = Int32.Parse(p_Text.Substring(0, 2));
}
catch
{
throw new Exception("128C必须是数字！");
}
_Text += GetValue(Encode.Code128C, p_Text.Substring(0, 2), ref _Temp);
_TextNumb.Add(_Temp);
p_Text = p_Text.Remove(0, 2);
}
break;
default:
if (p_Code == Encode.Code128A)
{
_Examine = 103;
}
else
{
_Examine = 104;
}
while (p_Text.Length != 0)
{
int _Temp = 0;
string _ValueCode = GetValue(p_Code, p_Text.Substring(0, 1), ref _Temp);
if (_ValueCode.Length == 0) throw new Exception("无效的字符集!" + p_Text.Substring(0, 1).ToString());
_Text += _ValueCode;
_TextNumb.Add(_Temp);
p_Text = p_Text.Remove(0, 1);
}
break;
}
if (_TextNumb.Count == 0) throw new Exception("错误的编码,无数据");
_Text = _Text.Insert(0, GetValue(_Examine)); //获取开始位
for (int i = 0; i != _TextNumb.Count; i++)
{
_Examine += _TextNumb[i] * (i + 1);
}
_Examine = _Examine % 103; //获得严效位
_Text += GetValue(_Examine); //获取严效位
_Text += "2331112"; //结束位
Bitmap _CodeImage = GetImage(_Text);
GetViewText(_CodeImage, _ViewText);
return _CodeImage;
}
/// <summary>
/// 获取目标对应的数据
/// </summary>
/// <param name="p_Code">编码</param>
/// <param name="p_Value">数值 A b 30</param>
/// <param name="p_SetID">返回编号</param>
/// <returns>编码</returns>
private string GetValue(Encode p_Code, string p_Value, ref int p_SetID)
{
if (m_Code128 == null) return "";
DataRow[] _Row = m_Code128.Select(p_Code.ToString() + "='" + p_Value + "'");
if (_Row.Length != 1) throw new Exception("错误的编码" + p_Value.ToString());
p_SetID = Int32.Parse(_Row[0]["ID"].ToString());
return _Row[0]["BandCode"].ToString();
}
/// <summary>
/// 根据编号获得条纹
/// </summary>
/// <param name="p_CodeId"></param>
/// <returns></returns>
private string GetValue(int p_CodeId)
{
DataRow[] _Row = m_Code128.Select("ID='" + p_CodeId.ToString() + "'");
if (_Row.Length != 1) throw new Exception("验效位的编码错误" + p_CodeId.ToString());
return _Row[0]["BandCode"].ToString();
}
/// <summary>
/// 获得条码图形
/// </summary>
/// <param name="p_Text">文字</param>
/// <returns>图形</returns>
private Bitmap GetImage(string p_Text)
{
char[] _Value = p_Text.ToCharArray();
int _Width = 0;
for (int i = 0; i != _Value.Length; i++)
{
_Width += Int32.Parse(_Value[i].ToString()) * (m_Magnify + 1);
}
Bitmap _CodeImage = new Bitmap(_Width, (int)m_Height);
Graphics _Garphics = Graphics.FromImage(_CodeImage);
//Pen _Pen;
int _LenEx = 0;
for (int i = 0; i != _Value.Length; i++)
{
int _ValueNumb = Int32.Parse(_Value[i].ToString()) * (m_Magnify + 1); //获取宽和放大系数
if (!((i & 1) == 0))
{
//_Pen = new Pen(Brushes.White, _ValueNumb);
_Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, 0, _ValueNumb, (int)m_Height));
}
else
{
//_Pen = new Pen(Brushes.Black, _ValueNumb);
_Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, 0, _ValueNumb, (int)m_Height));
}
//_Garphics.(_Pen, new Point(_LenEx, 0), new Point(_LenEx, m_Height));
_LenEx += _ValueNumb;
}
_Garphics.Dispose();
return _CodeImage;
}
/// <summary>
/// 显示可见条码文字 如果小于40 不显示文字
/// </summary>
/// <param name="p_Bitmap">图形</param>
private void GetViewText(Bitmap p_Bitmap, string p_ViewText)
{
if (m_ValueFont == null) return;
Graphics _Graphics = Graphics.FromImage(p_Bitmap);
SizeF _DrawSize = _Graphics.MeasureString(p_ViewText, m_ValueFont);
if (_DrawSize.Height > p_Bitmap.Height - 10 || _DrawSize.Width > p_Bitmap.Width)
{
_Graphics.Dispose();
return;
}
int _StarY = p_Bitmap.Height - (int)_DrawSize.Height;
_Graphics.FillRectangle(Brushes.White, new Rectangle(0, _StarY, p_Bitmap.Width, (int)_DrawSize.Height));
_Graphics.DrawString(p_ViewText, m_ValueFont, Brushes.Black, 0, _StarY);
}
//12345678
//(105 + (1 * 12 + 2 * 34 + 3 * 56 + 4 *78)) % 103 = 47
//结果为starc +12 +34 +56 +78 +47 +end
internal Image GetCodeImage(string p)
{
throw new NotImplementedException();
}
}
}
}
调用代码为：
Code128 _Code = new Code128();
_Code.ValueFont = new Font("宋体", 20);
System.Drawing.Bitmap imgTemp = _Code.GetCodeImage("T26200-1900-123-1-0900",Code128.Encode.Code128A);
imgTemp.Save(System.AppDomain.CurrentDomain.BaseDirectory + "\\" + "BarCode.gif", System.Drawing.Imaging.ImageFormat.Gif);
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时间： 2024-08-01 05:16:56