c#生产条形码问题
我查了好多资料。说有的字体可以生成条形码。可是我试过了。好像都没成功！
Font f = new Font("宋体", 12, FontStyle.Regular);

Bitmap b = new Bitmap(200, 200);
Graphics g = Graphics.FromImage(b);
Font font = new Font("Code39AzaleaRegular2", 32);
//Font font = new Font("CODE39", 32);
g.DrawString("123456", font, Brushes.Black, new PointF(100, 100));
pictureBox1.BackgroundImage = b;
pictureBox1.BackgroundImageLayout = ImageLayout.Zoom;

这是网上找的代码，可是没有生产条形码啊！CODE39这个字体我是从网上下载的。然后也安装了！意思就放在系统字体库的那个地方！可是没有生产条形码。还是1234。。。

懂的麻烦帮我看下。条形码我没弄过！

[解决办法]
code39的没有写过，提供一个code93的吧

C# code

    class Code93    {        List<int> indexs = new List<int>(20);        char[] chars = {'0','1','2','3','4','5','6','7','8','9',                           'A','B','C','D','E','F','G','H','I','J',                           'K','L','M','N','O','P','Q','R','S','T',                           'U','V','W','X','Y','Z','-','.',' ','$',                           '/','+','%'};        string[] codes = {"100010100","101001000","101000100","101000010","100101000",                             "100100100","100100010","101010000","100010010","100001010" ,                             "110101000","110100100","110100010","110010100","110010010",                             "110001010","101101000","101100100","101100010","100110100",                             "100011010","101011000","101001100","101000110","100101100",                             "100010110","110110100","110110010","110101100","110100110" ,                             "110010110","110011010","101101100","101100110","100110110" ,                             "100111010","100101110","111010100","111010010","111001010" ,                             "101101110","101101110","110101110","100100110","111011010" ,                             "111010110","100110010","101011110","1010111101"};        public string EndodingCode93(string s)        {            string code = codes[47];            for (int i = 0; i < s.Length; i++)            {                if (s[i] == '+')                    return null;                int y = -1;                for (int x = 0; x < chars.Length; x++)                    if (chars[x] == s[i])                    {                        y = x;                        break;                    }                if (y == -1)                    return null;                code += codes[y];                indexs.Add(y);            }            int m = 0;            for (int i = indexs.Count - 1; i >= 0; i--)                m += (((indexs.Count - 1 - i) % 20) + 1) * indexs[i];            indexs.Add(m % 47);            int n = 0;            for (int i = indexs.Count - 1; i >= 0; i--)                n += (((indexs.Count - 1 - i) % 15) + 1) * indexs[i];            code += codes[m % 47];            code += codes[n % 47];            code += codes[48];            indexs.Clear();            return code;        }    }