using System;using System.Text;using System.Text.RegularExpressions;namespace HKH.Common{ /// /// 人民币大小写格式转换 /// /// Create By Lwt on 2006/09/23 /// public class clsRMB { private clsRMB() { } #region 格式化 /// /// 格式化（大写转小写） /// /// /// public static double Format(string strRMB) { try { //正则表达式，验证第一位是否阿拉伯数字，确定转换格式 //1.5亿----混写格式 if(Regex.IsMatch(strRMB,"^\\d")) { //去掉元单位 strRMB = Regex.Replace(strRMB,"元|圆",""); char temp = strRMB[strRMB.Length - 1]; if ( '万' == temp || '亿' == temp || '万' == temp ) { return Convert.ToDouble(strRMB.Substring(0,strRMB.Length - 1)) * Math.Pow(10,GetExp(temp)); } else { return Convert.ToDouble(strRMB); } } //壹亿伍千万-----大写格式 else { return Eval(strRMB); } } catch { return -1; } } /// /// 格式化（小写转大写） /// /// /// public static string Format(double numRMB) { try { if( 0 == numRMB) return "零元整"; StringBuilder szRMB = new StringBuilder(); //乘100以格式成整型，便于处理 ulong iRMB = Convert.ToUInt64(numRMB * 100); szRMB.Insert(0,ToUpper(Convert.ToInt32(iRMB % 100),-2)); //去掉原来的小数位 iRMB = iRMB / 100; int iUnit = 0; //以每4位为一个单位段进行处理，所以下边除以10000 while( 0 != iRMB ) { szRMB.Insert(0,ToUpper(Convert.ToInt32(iRMB % 10000),iUnit )); iRMB = iRMB / 10000; iUnit += 4; } szRMB.Replace("元零整","元整"); szRMB.Replace("零元","元"); //格式修正 string strRMB = Regex.Replace(szRMB.ToString(),"零+","零"); return strRMB.Trim('零'); } catch { return ""; } } #endregion #region 私有方法 /// /// 计算表达式（大写表达式求值） /// /// /// private static double Eval(string strRMB) { try { if ( null == strRMB ) return 0; strRMB = Replace(strRMB,false); if ( "" == strRMB ) return 0; #region 利用位权进行计算 //基础指数 int basicExp = 0; //当前指数 int currExp = 0; double numRMB = 0; for(int i = strRMB.Length - 1; i > -1 ; i --) { char temp = strRMB[i]; if ( '元' == temp || '万' == temp || '亿' == temp || '万' == temp || '圆' == temp ) { basicExp = GetExp(temp); currExp = 0; continue; } else { if(Regex.IsMatch(temp.ToString(),"^\\d")) { numRMB = numRMB + Convert.ToInt32(temp.ToString()) * Math.Pow(10,(basicExp + currExp)); } else { currExp = GetExp(temp); } } } #endregion return numRMB; } catch { return -1; } } /// /// 计算表达式（小写数值求大写字符串） /// /// /// /// private static string ToUpper(int numRMB,int iUnit) { try { if( 0 == numRMB ) { if ( -2 == iUnit ) { return "整"; } if ( 0 == iUnit ) { return "元"; } return "零"; } StringBuilder szRMB = new StringBuilder(); string strRMB = ""; #region 对角/分做特殊处理 if ( -2 == iUnit ) { int jiao = numRMB / 10; int fen = numRMB % 10; if (jiao > 0) { szRMB.Append(jiao); szRMB.Append(GetUnit(-1)); if ( fen > 0) { szRMB.Append(fen); szRMB.Append(GetUnit(-2)); } } else { szRMB.Append(fen); szRMB.Append(GetUnit(-2)); } return Replace(szRMB.ToString(),true); } #endregion #region 以下为整数部分正常处理 strRMB = numRMB.ToString("0000"); //前一位是否是0 bool hasZero = false; for ( int i = 0; i < strRMB.Length; i++ ) { //只有四位，最高位为‘千’，所以下边的3-i为单位修正 if ( ( 3-i ) > 0) { if( '0' != strRMB[i] ) { szRMB.Append(strRMB[i]); szRMB.Append(GetUnit( 3-i )); hasZero = false; } else { if( !hasZero ) szRMB.Append(strRMB[i]); hasZero = true; } } //最后一位，特别格式处理 //如最后一位是零，则单位应在零之前 else { if( '0' != strRMB[i] ) { szRMB.Append(strRMB[i]); szRMB.Append(GetUnit( iUnit )); hasZero = false; } else { if( hasZero ) { szRMB.Insert(szRMB.Length - 1,GetUnit( iUnit )); } else { szRMB.Append(GetUnit( iUnit )); szRMB.Append(strRMB[i]); } } } } //转换大写后返回 return Replace(szRMB.ToString(),true); #endregion } catch { return ""; } } ///以下代码可以独立封装成类，上面只封装算法，成策略模式使用，可扩展性更加完美/// /// 将中文大写换成阿拉伯数字 /// /// /// true--转换为大写/false--转换为小写 /// private static string Replace(string strRMB,bool toUpper) { if(toUpper) { strRMB = strRMB.Replace("0","零"); strRMB = strRMB.Replace("1","壹"); strRMB = strRMB.Replace("2","贰"); strRMB = strRMB.Replace("3","叁"); strRMB = strRMB.Replace("4","肆"); strRMB = strRMB.Replace("5","伍"); strRMB = strRMB.Replace("6","陆"); strRMB = strRMB.Replace("7","柒"); strRMB = strRMB.Replace("8","捌"); strRMB = strRMB.Replace("9","玖"); } else { strRMB = strRMB.Replace("零","0"); strRMB = strRMB.Replace("壹","1"); strRMB = strRMB.Replace("贰","2"); strRMB = strRMB.Replace("叁","3"); strRMB = strRMB.Replace("肆","4"); strRMB = strRMB.Replace("伍","5"); strRMB = strRMB.Replace("陆","6"); strRMB = strRMB.Replace("柒","7"); strRMB = strRMB.Replace("捌","8"); strRMB = strRMB.Replace("玖","9"); } return strRMB; } /// /// 获取单位名称 /// /// /// private static string GetUnit(int iCode) { switch(iCode) { case -2: return "分"; case -1: return "角"; case 0: return "元"; case 1: return "拾"; case 2: return "佰"; case 3: return "仟"; case 4: return "万"; case 8: return "亿"; default: return ""; } } /// /// 获取位权指数 /// /// /// private static int GetExp(char cUnit ) { switch(cUnit) { case '分': return -2; case '角': return -1; case '元': case '圆': return 0; case '十': case '拾': return 1; case '百': case '佰': return 2; case '千': case '仟': return 3; case '万': case '万': return 4; case '亿': return 8; default: return 0; } } #endregion }}这是在网上找的C＃的，不过好麻烦啊！记的以前用JAVA写的时候没这么麻烦！．．．．．．．．．．．．．好久没写程序了．．．．．．．
