C# 条形码 生成函数 (Code 128 标准参考:GB/T 18347-2001)
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最近在做单据打印,发现客户要求用到条形码,在网上找了,发现只有一些条形码的标准,但打出来发现根本不能扫,还要加某些字体. 以下代码经过实际扫描测试~!
/// <summary>
/// 生成条形码( 128条码,标准参考:GB/T 18347-2001 )
/// BY JUNSON 20090508
/// </summary>
public class BarCode
{
/// <summary>
/// 条形码生成函数
/// </summary>
/// <param name="text">条型码字串</param>
/// <returns></returns>
public static Bitmap BuildBarCode(string text)
{
//查检是否合条件TEXT
bool ck = CheckErrerCode(text);
if (!ck)
throw new Exception("条形码字符不合要求，不能是汉字或全角字符");
string barstring = BuildBarString(text);
return KiCode128C(barstring, 30);
}
/// <summary>
/// 建立条码字符串
/// </summary>
/// <param name="tex">条码内容</param>
/// <returns></returns>
private static string BuildBarString(string tex)
{
string barstart = "bbsbssbssss"; //码头
string barbody = ""; //码身
string barcheck = ""; //码检
string barend = "bbsssbbbsbsbb"; //码尾
int checkNum = 104;
//循环添加码身,计算码检
for (int i = 1; i <= tex.Length; i++)
{
int index = (int)tex[i - 1] - 32;
checkNum += (index * i);
barbody += AddSimpleTag(index);//加入字符值的条码标记
}
//码检值计算
barcheck = AddSimpleTag(int.Parse(Convert.ToDouble(checkNum % 103).ToString("0")));
string barstring = barstart + barbody + barcheck + barend;
return barstring;
}
//增加一个条码标记
private static string AddSimpleTag(int CodeIndex)
{
string res = "";
/// <summary>1-4的条的字符标识 </summary>
string[] TagB ={ "", "b", "bb", "bbb", "bbbb" };
/// <summary>1-4的空的字符标识 </summary>
string[] TagS ={ "", "s", "ss", "sss", "ssss" };
string[] Code128List = new string[] {
"212222","222122","222221","121223","121322","131222","122213","122312","132212","221213",
"221312","231212","112232","122132","122231","113222","123122","123221","223211","221132",
"221231","213212","223112","312131","311222","321122","321221","312212","322112","322211",
"212123","212321","232121","111323","131123","131321","112313","132113","132311","211313",
"231113","231311","112133","112331","132131","113123","113321","133121","313121","211331",
"231131","213113","213311","213131","311123","311321","331121","312113","312311","332111",
"314111","221411","431111","111224","111422","121124","121421","141122","141221","112214",
"112412","122114","122411","142112","142211","241211","221114","413111","241112","134111",
"111242","121142","121241","114212","124112","124211","411212","421112","421211","212141",
"214121","412121","111143","111341","131141","114113","114311","411113","411311","113141",
"114131","311141","411131","211412","211214","211232" };
string tag = Code128List[CodeIndex];
for (int i = 0; i < tag.Length; i++)
{
string temp = "";
int num = int.Parse(tag[i].ToString());
if (i % 2 == 0)
{
temp = TagB[num];
}
else
{
temp = TagS[num];
}
res += temp;
}
return res;
}
/// <summary>
/// 检查条形码文字是否合条件(不能是汉字或全角字符)
/// </summary>
/// <param name="cktext"></param>
/// <returns></returns>
private static bool CheckErrerCode(string cktext)
{
foreach (char c in cktext)
{
byte[] tmp = System.Text.UnicodeEncoding.Default.GetBytes(c.ToString());
if (tmp.Length > 1)
return false;
}
return true;
}
/// <summary>生成条码 </summary>
/// <param name="BarString">条码模式字符串</param> //Format32bppArgb
/// <param name="Height">生成的条码高度</param>
/// <returns>条码图形</returns>
private static Bitmap KiCode128C(string BarString, int _Height)
{
Bitmap b = new Bitmap(BarString.Length, _Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//using (Graphics grp = Graphics.FromImage(b))
//{
try
{
char[] cs = BarString.ToCharArray();
for (int i = 0; i < cs.Length; i++)
{
for (int j = 0; j < _Height; j++)
{
if (cs[i] == 'b')
{
b.SetPixel(i, j, Color.Black);
}
else
{
b.SetPixel(i, j, Color.White);
}
}
}
//grp.DrawString(text, SystemFonts.CaptionFont, Brushes.Black, new PointF(leftEmpty, b.Height - botEmpty));
return b;
}
catch
{
return null;
}
//}
}
}
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