using System; using System.ComponentModel; using System.Text; using System.Text.RegularExpressions; namespace blqw {     public static class NumberToUpper     {         #region 固定参数         //^[-+]?\d*(?<point>[.])?\d*$         readonly static Regex CheckNumber = new Regex(@"^[\s\t]*0*(?<integer>[-+]?\d*)[.]?(?<decimal>\d*[1-9])?[0]*[\s\t]*$", RegexOptions.Compiled);         readonly static string[] UpperNumbers =         {             "零壹貳叁肆伍陸柒捌玖點",             "零一二三四五六七八九点"         };         readonly static string[] NumberUnits =         {             "仟萬拾佰億負",             "千万十百亿负"         };         readonly static string[] MoneyUnits =         {             "圓角分",             "元角分"         };         #endregion         /// <summary> 将数字文本转换成大写         /// </summary>         /// <param name="number">数字文本</param>         /// <param name="isSimplified">是否只使用简体中文,默认:否</param>         /// <param name="isMoney">是否是金额模式(忽略小数点后3位,并加上单位"元,角,分或整"),否认:是</param>         /// <param name="veryBig">是否开启大数字文本模式(接受15位以上整数,及10位以上小数),否认:否</param>         public static string Go(string number, bool isSimplified = false, bool isMoney = true, bool veryBig = false)         {             if (number == null)             {                 throw new ArgumentNullException("number", "number不能为空");             }             //number = number.Trim(' ', '\t');    //去掉多余的空格,制表符             var m = CheckNumber.Match(number);             if (m.Success == false)             {                 throw new ArgumentException("number不是数字", "number");             }             unsafe             {                 fixed (char* p = number)                 fixed (char* upnum = UpperNumbers[isSimplified.GetHashCode()])                 fixed (char* numut = NumberUnits[isSimplified.GetHashCode()])                 fixed (char* monut = MoneyUnits[isSimplified.GetHashCode()])                 {                     var mdec = m.Groups["decimal"];                     var mInt = m.Groups["integer"];                     if (mInt.Length > 15 && veryBig == false)                     {                         throw new ArgumentException("不建议转换超过15位的整数,除非将veryBig参数设置为true", "number");                     }                     if (mdec.Length > 10 && veryBig == false)                     {                         throw new ArgumentException("不建议转换超过10位的小,除非将veryBig参数设置为true", "number");                     }                     string integer = ParseInteger(p + mInt.Index, p + mInt.Index + mInt.Length - 1, upnum, numut);                     if (mdec.Success == false)                     {                         string unit = null;                         if (isMoney)                             unit = monut[0].ToString() + "整";                         return integer + unit;                     }                     else                     {                         if (isMoney)                         {                             string jiao = upnum[p[mdec.Index] - '0'].ToString();                             string fen = mdec.Length == 1 ? "0" : upnum[p[mdec.Index + 1] - '0'].ToString();                             if (jiao != "0")                             {                                 jiao += monut[1];                             }                             if (fen != "0")                             {                                 jiao += fen + monut[2];                             }                             return integer + monut[0].ToString() + jiao;                         }                         else                         {                             return integer + ParseDecimal(p + mdec.Index, p + mdec.Index + mdec.Length - 1, upnum);                         }                     }                 }             }             }         //操作小数部分         static unsafe string ParseDecimal(char* p, char* end, char* upnum)         {             StringBuilder sb = new StringBuilder((int)(end - p));             sb.Append(upnum[10]);             while (p <= end)             {                 sb.Append(upnum[*p - '0']);                 p++;             }             return sb.ToString();         }         //操作整数部分,为了效率不写递归.....         static unsafe string ParseInteger(char* p, char* end, char* upnum, char* numut)         {             int length = (int)(end - p) + 1;             StringBuilder sb = new StringBuilder(length * 3);             if (*p == '-')             {                 sb.Append(numut[5]);                 p++;                 length--;                 if (*p == '.')                 {                     sb.Append(upnum[5]);                 }             }             else if (*p == '+')             {                 p++;                 length--;             }             bool ling = false;             bool yi = false;             bool wan = false;             while (p <= end)             {                 int num = *p - '0';         //获得当前的数0-9                 if (num != 0 && ling == true)//需要加 零                 {                     sb.Append(upnum[0]);                     ling = false;           //重置 参数                 }                 if (length % 8 == 1)        //判断是否在"亿"位                 {                           //如果是                     int n = length / 8;     //计算应该有几个"亿"                     if (num != 0 || yi == true) //判断是否需要加 单位                     {                         if (num != 0)               //如果不为 0                         {                             sb.Append(upnum[num]);  //加入字符串                         }                         if (n > 0) sb.Append(numut[4], n);                         if (ling) ling = false;     //重置 参数                         yi = false;                 //重置 参数                         if (wan) wan = false;       //重置 参数                     }                 }                 else                                //十千百万                 {                     var uIndex = length % 4;        //单位索引                     if (uIndex == 1)                //判断是否在"万"位                     {                         if (num != 0 || wan == true)    //判断是否需要加 单位                         {                             if (num != 0)               //如果不为 0                             {                                 sb.Append(upnum[num]);  //加入字符串                             }                             sb.Append(numut[uIndex]);                             if (ling) ling = false; //重置 参数                             wan = false;            //重置 参数                             if (!yi) yi = true;     //设定 参数                         }                     }                     else                            //十千百                     {                         if (num != 0)               //如果不为 0                         {                             if ((uIndex == 2 && num == 1) == false) //排除 "一十二" 只显示 "十二"                             {                                 sb.Append(upnum[num]);  //加入字符串                             }                             sb.Append(numut[uIndex]);//加入单位                             if (!yi) yi = true;     //设定 参数                             if (!wan) wan = true;   //设定 参数                         }                         else if (ling == false)                         {                             ling = true;                         }                     }                 }                 length--;                 p++;             }             return sb.ToString();         }     } }

var str = NumberToUpper.Go("467412346546454.4564768"); Console.WriteLine(str); str = NumberToUpper.Go("467412346546454.4564768", true); Console.WriteLine(); Console.WriteLine(str); str = NumberToUpper.Go("467412346546454.4564768", false, false); Console.WriteLine(); Console.WriteLine(str); str = NumberToUpper.Go("7672313576513214657465413244563203246.1235", false, false, true); Console.WriteLine(); Console.WriteLine(str);