0~9,A001~A999 4位36进制流水号实现方式

来源：互联网发布：马刺体系知乎编辑：程序博客网时间：2024/06/05 02:12

最近有个韩国客户项目,要求真奇特.4位流水号规则:0001~9999,之后到A001~A999,B001~B999,以此类推一直到ZZZZ.不更改数据库内顺延流水号.

实现代码如下:

1.先生成A001~ZZZZ到数组集合:

/// <summary>        /// 生成A~ZZZZ        /// </summary>        /// <returns></returns>        private static string[] Get_str()        {            string str = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";            string str1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";            string[] BASE_CHAR = new string[475273];            int s01 = 0;//记录第一位字母            int s02 = 0;//记录第二位字母            int s03 = 0;//记录第三位字母            int s04 = 0;//记录第四位字母             try            {                for (int i = 0; i <= 475273; i++)                {                    if (i < 36)                    {                        BASE_CHAR[i] = str[i].ToString();                    }                    else if (i < 712)                    {                        if (s02 > 25)                        {                            s01++;                            s02 = 0;                        }                        BASE_CHAR[i] = str1[s01].ToString() + str1[s02].ToString();                        s02++;                        if (i == 711)                        {                            s01 = 0;                            s02 = 0;                        }                    }                    else if (i < 18288)                    {                        if (s03 > 25)                        {                            s02++;                            s03 = 0;                        }                        if (s02 > 25)                        {                            s01++;                            s02 = 0;                        }                        BASE_CHAR[i] = str1[s01].ToString() + str1[s02].ToString() + str1[s03].ToString();                        if (i == 18287)                        {                            s01 = 0;                            s02 = 0;                            s03 = 0;                        }                        s03++;                    }                    else                    {                        if (s04 > 25)                        {                            s03++;                            s04 = 0;                        }                        if (s03 > 25)                        {                            s02++;                            s03 = 0;                        }                        if (s02 > 25)                        {                            s01++;                            s02 = 0;                        }                        if (s01 > 25)                        {                            break;                        }                        BASE_CHAR[i] = str1[s01].ToString() + str1[s02].ToString() + str1[s03].ToString() + str1[s04].ToString();                        s04++;                    }                }            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }            return BASE_CHAR;        }

2.根据流水号返回写好的进制

/// <summary>        /// 返回流水号         /// </summary>        /// <param name="_ls"></param>        /// <returns></returns>        private string Get_Number(int _ls)        {            string _val = "";            string _d = "";            string _v = "";//后面流水号            if (_ls.ToString().Length == 5)            {                _d = _ls.ToString().Substring(0, 2);                //取后3位流水号                _v = _ls.ToString().Substring((_ls.ToString().Length - 3), 3);            }            else if (_ls.ToString().Length == 6)            {                _d = _ls.ToString().Substring(0, 3);                //取后2位流水号                _v = _ls.ToString().Substring((_ls.ToString().Length - 4), 2);            }            else            {                _d = _ls.ToString().Substring(0, (_ls.ToString().Length - 1));                //取后1位流水号                _v = _ls.ToString().Substring((_ls.ToString().Length - 1), 1);            }            //0 进 1            if (int.Parse(_v) == 0)            {                if (_v.Length == 3)                    _v = "001";                else if (_v.Length == 2)                    _v = "01";                else                    _v = "1";                LS_number++;                LS_number++;            }            int z = int.Parse(_d);            if (z > 475237)            {                MessageBox.Show("流水号已经超出 475237");            }            else            {                _val = str_36[z] + _v;            }            return _val;        }

3.调用返回进制流水号

/// <summary>        /// 返回进制        /// </summary>        /// <param name="_ls">流水号</param>        /// <returns></returns>        private string Get_jz(int _ls)        {            string _val = "";            try            {                if (_ls.ToString().Length <= 4)                {                    _val = _ls.ToString().PadLeft(4, '0');                    return _val;                }                _val = Get_Number(_ls);            }            catch (Exception ex)            {                MessageBox.Show("流水号错误:" + ex.Message);            }            return _val;        }

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