C# 条形码 生成函数 (Code 128 标准

C# 条形码 生成函数 (Code 128 标准参考:GB/T 18347-2001)

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;

 

            }

 

            //}

 

        }

 

    }