public class Number2English
{
private string[] StrNO = new string[19]; private string[] Unit = new string[8]; private string[] StrTens = new string[9]; public string NumberToString(double Number) 
{ string Str; string BeforePoint; string AfterPoint; string tmpStr; int nBit; string CurString; int nNumLen; Init(); Str = Convert.ToString(Math.Round(Number,2)); if (Str.IndexOf(".")==-1) { BeforePoint = Str; AfterPoint = ""; 
} else { BeforePoint = Str.Substring(0,Str.IndexOf(".")); AfterPoint = Str.Substring(Str.IndexOf(".")+1,Str.Length - Str.IndexOf(".")-1); } if (BeforePoint.Length > 12) { return null; } Str = ""; while (BeforePoint.Length > 0) { nNumLen = Len(BeforePoint); if (nNumLen % 3 == 0) { CurString = Left(BeforePoint, 3); BeforePoint = Right(BeforePoint, nNumLen - 3); } else { CurString = Left(BeforePoint, (nNumLen % 3)); BeforePoint = Right(BeforePoint, nNumLen - (nNumLen % 3)); } nBit = Len(BeforePoint) / 3; tmpStr = DecodeHundred(CurString); if((BeforePoint == Len(BeforePoint).ToString() || nBit ==0) && Len(CurString) ==3) { if (System.Convert.ToInt32(Left(CurString, 1)) != 0 & System.Convert.ToInt32(Right(CurString, 2)) != 0) { tmpStr = Left(tmpStr, tmpStr.IndexOf(Unit[3]) + Len(Unit[3])) + Unit[7] + " " + Right(tmpStr, Len(tmpStr) - (tmpStr.IndexOf(Unit[3]) + Len(Unit[3]))); } else { tmpStr = Unit[7] + " " + tmpStr; } } if (nBit == 0) { Str = Convert.ToString(Str + " " + tmpStr).Trim(); } else { Str = Convert.ToString(Str + " " + tmpStr + " " + Unit[nBit-1]).Trim(); } if (Left(Str, 3) == Unit[7]) { Str = Convert.ToString(Right(Str, Len(Str) - 3)).Trim(); } if( BeforePoint == Len(BeforePoint).ToString()) { return ""; } } BeforePoint = Str; if (Len(AfterPoint) > 0) { AfterPoint = Unit[5] + " " + DecodeHundred(AfterPoint) + " " + Unit[6]; } else { AfterPoint = Unit[4]; } return BeforePoint + " " + AfterPoint; } private void Init() { if (StrNO[0] != "One") { StrNO[0] = "One"; StrNO[1] = "Two"; StrNO[2] = "Three"; StrNO[3] = "Four"; StrNO[4] = "Five"; StrNO[5] = "Six"; StrNO[6] = "Seven"; StrNO[7] = "Eight"; StrNO[8] = "Nine"; StrNO[9] = "Ten"; StrNO[10] = "Eleven"; StrNO[11] = "Twelve"; StrNO[12] = "Thirteen"; StrNO[13] = "Fourteen"; StrNO[14] = "Fifteen"; StrNO[15] = "Sixteen"; StrNO[16] = "Seventeen"; StrNO[17] = "Eighteen"; StrNO[18] = "Nineteen"; StrTens[0] = "Ten"; StrTens[1] = "Twenty"; StrTens[2] = "Thirty"; StrTens[3] = "Forty"; StrTens[4] = "Fifty"; StrTens[5] = "Sixty"; StrTens[6] = "Seventy"; StrTens[7] = "Eighty"; StrTens[8] = "Ninety"; Unit[0] = "Thousand"; Unit[1] = "Million"; Unit[2] = "Billion"; Unit[3] = "Hundred"; Unit[4] = "Only"; Unit[5] = "Point"; Unit[6] = "Cent"; Unit[7] = "And"; } } private string DecodeHundred(string HundredString) { int tmp; string rtn=""; if( Len(HundredString) > 0 && Len(HundredString) <= 3) { switch (Len(HundredString)) { case 1: tmp = System.Convert.ToInt32(HundredString); if (tmp != 0) { rtn=StrNO[tmp-1].ToString(); } break; case 2: tmp = System.Convert.ToInt32(HundredString); if (tmp != 0) { if ((tmp < 20)) { rtn=StrNO[tmp-1].ToString(); } else { if (System.Convert.ToInt32(Right(HundredString, 1)) == 0) { rtn=StrTens[Convert.ToInt32(tmp / 10)-1].ToString(); } else { rtn=Convert.ToString(StrTens[Convert.ToInt32(tmp / 10)-1] + "-" + StrNO[System.Convert.ToInt32(Right(HundredString, 1))-1]); } } } break; case 3: if (System.Convert.ToInt32(Left(HundredString, 1)) != 0) { rtn=Convert.ToString(StrNO[System.Convert.ToInt32(Left(HundredString, 1))-1] + " " + Unit[3] + " " + DecodeHundred(Right(HundredString, 2))); } else { rtn=DecodeHundred(Right(HundredString, 2)).ToString(); } break; default: break; } } return rtn; } private string Left(string str,int n) { return str.Substring(0,n); } private string Right(string str,int n) { return str.Substring(str.Length-n,n); } private int Len(string str) { return str.Length; } 
} public class DecimalToUpper { public DecimalToUpper() { // // TODO: 在此处添加构造函数逻辑 // } /// <summary> /// 小写金额转换为大写金额，其他条件：金额小于一万亿，最多两位小数 /// </summary> /// <param name="d">源金额，d 《 1000000000000.00(一万亿)，且最多两位小数 </param> /// <returns>结果，大写金额</returns> public string ToUpper(decimal d) { if (d == 0) return "零元整"; string je = d.ToString("####.00"); if (je.Length > 15) return ""; je = new String('0',15 - je.Length) + je; //若小于15位长，前面补0 string stry = je.Substring(0,4); //取得'亿'单元 string strw = je.Substring(4,4); //取得'万'单元 string strg = je.Substring(8,4); //取得'元'单元 string strf = je.Substring(13,2); //取得小数部分 string str1 = "",str2 = "",str3 = ""; str1 = this.getupper(stry,"亿"); //亿单元的大写 str2 = this.getupper(strw,"万"); //万单元的大写 str3 = this.getupper(strg,"元"); //元单元的大写 string str_y = "", str_w = ""; if (je[3] == '0' || je[4] == '0') //亿和万之间是否有0 str_y = "零"; if (je[7] == '0' || je[8] == '0') //万和元之间是否有0 str_w = "零"; string ret = str1 + str_y + str2 + str_w + str3; //亿，万，元的三个大写合并 for (int i = 0 ;i < ret.Length;i++) //去掉前面的"零" { if (ret[i] != '零') { ret = ret.Substring(i); break; } } for (int i = ret.Length - 1;i > -1 ;i--) //去掉最后的"零" { if (ret[i] != '零') { ret = ret.Substring(0,i+1); break; } } if (ret[ret.Length - 1] != '元') //若最后不位不是'元'，则加一个'元'字 ret = ret + "元"; if (ret == "零零元") //若为零元，则去掉"元数"，结果只要小数部分 ret = ""; if (strf == "00") //下面是小数部分的转换 { ret = ret + "整"; } else { string tmp = ""; tmp = this.getint(strf[0]); if (tmp == "零") ret = ret + tmp; else ret = ret + tmp + "角"; tmp = this.getint(strf[1]); if (tmp == "零") ret = ret + "整"; else ret = ret + tmp + "分"; } if (ret[0] == '零') { ret = ret.Substring(1); //防止0.03转为"零叁分"，而直接转为"叁分" } return ret; //完成，返回 } /// <summary> /// 把一个单元转为大写，如亿单元，万单元，个单元 /// </summary> /// <param name="str">这个单元的小写数字（4位长，若不足，则前面补零）</param> /// <param name="strDW">亿，万，元</param> /// <returns>转换结果</returns> private string getupper(string str,string strDW) { if (str == "0000") return ""; string ret = ""; string tmp1 = this.getint(str[0]) ; string tmp2 = this.getint(str[1]) ; string tmp3 = this.getint(str[2]) ; string tmp4 = this.getint(str[3]) ; if (tmp1 != "零") { ret = ret + tmp1 + "仟"; } else { ret = ret + tmp1; } if (tmp2 != "零") { ret = ret + tmp2 + "佰"; } else { if (tmp1 != "零") //保证若有两个零'00'，结果只有一个零，下同 ret = ret + tmp2; } if (tmp3 != "零") { ret = ret + tmp3 + "拾"; } else { if (tmp2 != "零") ret = ret + tmp3; } if (tmp4 != "零") { ret = ret + tmp4 ; } if (ret[0] == '零') //若第一个字符是'零'，则去掉 ret = ret.Substring(1); if (ret[ret.Length - 1] == '零') //若最后一个字符是'零'，则去掉 ret = ret.Substring(0,ret.Length - 1); return ret + strDW; //加上本单元的单位 } /// <summary> /// 单个数字转为大写 /// </summary> /// <param name="c">小写阿拉伯数字 0---9</param> /// <returns>大写数字</returns> private string getint(char c) { string str = ""; switch ( c ) { case '0': str = "零"; break; case '1': str = "壹"; break; case '2': str = "贰"; break; case '3': str = "叁"; break; case '4': str = "肆"; break; case '5': str = "伍"; break; case '6': str = "陆"; break; case '7': str = "柒"; break; case '8': str = "拐"; break; case '9': str = "玖"; break; } return str; } }
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