Csharp/C#教程：数字金额大写转换器制作代码分享(人民币大写转换)分享

代码如下:
///<summary>
///人民币大写
///</summary>
///<paramname=”input”>待转换输入</param>
///<paramname=”prefix”>需要添加人民币前缀</param>
///<exceptioncref=”ArgumentException”/>
///<returns>转换后的结果</returns>
publicstaticstringToCapital(thisstringinput,boolprefix=false){

   #regionStep1输入有效性验证

   if(!Regex.IsMatch(input,@”(?<=-|^)d*.?d*$”))
       thrownewArgumentException(“错误的输入金额！”);

   if(Regex.IsMatch(input,@”^d{25,}”))
       thrownewArgumentException(“输入数据太大无法转换！”);

   #endregion

   #regionStep2格式化为中间字符串

   varpositionDic=newDictionary<int,string>{
       {0,”F”},{1,”J”},{2,”.”},{3,”S”},{4,”B”},{5,”Q”},{6,”W”},{7,”SW”},{8,”BW”},{9,”QW”},
       {10,”Y”},{11,”SY”},{12,”BY”},{13,”QY”},{14,”WY”},{15,”SWY”},{16,”BWY”},{17,”QWY”},{18,”YY”},
       {19,”SYY”},{20,”BYY”},{21,”QYY”},{22,”WYY”},{23,”SWYY”},{24,”BWYY”},{25,”QWYY”}               
   };

   input=Regex.Replace(input,@”^.”,”0.”);

   varintegerPart=Regex.Replace(input,@”^-|..*$”,””);
   var_matchDecimal=Regex.Match(input,@”.d*$”,RegexOptions.None);
   vardecimalPart=Regex.Replace(_matchDecimal.Success?Convert.ToDouble(_matchDecimal.Value).ToString(“0.00″):”00″,@”0.”,””);

   varprocessStack=newStack<string>();
   varcharsArray=(integerPart+decimalPart).Reverse<char>();
   for(inti=0;i<charsArray.Count();i++){
       processStack.Push(string.Format(“{0}{1}”,charsArray.ElementAt(i),positionDic[i]));
   }

   //符号处理
   if(Regex.IsMatch(input,”^-“,RegexOptions.None)){
       processStack.Push(“-“);
   }
   if(prefix){
       processStack.Push(“￥”);
   }

   varprocess=string.Empty;
   while(processStack.Count>0){
       process+=processStack.Pop();
   }
   //语义处理模式队列
   Queue<Tuple<string,string,MatchEvaluator>>patterns=newQueue<Tuple<string,string,MatchEvaluator>>();
   varpatternBuilder=newStringBuilder();
   for(inti=3;i<positionDic.Count;i++){
       patternBuilder.AppendFormat(“{0}{1}”,(i==3?”(0(?:”:””)+positionDic[i],i==positionDic.Count-1?”)+?)+”:”|”);
   }
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(patternBuilder.ToString(),”0″,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”(?:d+(?:QW|BW|SW|W|Q|B|S)?d?YY)+”,null,m=>m.Value.Replace(“YY”,””)+”YY”));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”(?:d+(?:QW|BW|SW|W|Q|B|S)?d?Y)+”,null,m=>m.Value.Replace(“Y”,””)+”Y”));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”(?:d+(?:Q|B|S)?d?W)+”,null,m=>m.Value.Replace(“W”,””)+”W”));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”(?!^)0+.”,”.”,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”^0.0J|^0.”,””,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(“0J|0F”,”0″,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(“J0?$”,”JZ”,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”.$|.0+$”,”.Z”,null));
   patterns.Enqueue(Tuple.Create<string,string,MatchEvaluator>(@”^0+$|^[^.]{0}$”,”0.Z”,null));

   while(patterns.Count>0){
       varpattern=patterns.Dequeue();
       if(pattern.Item3!=null){
           process=Regex.Replace(process,pattern.Item1,pattern.Item3);
       }
       else{
           process=Regex.Replace(process,pattern.Item1,pattern.Item2);
       }
   }

   #endregion

   #regionStep3翻译中间字符串
   StringBuilderresult=newStringBuilder();
   vartranslatorDic=newDictionary<char,string>{
       {‘0’,”零”},{‘1’,”壹”},{‘2’,”贰”},{‘3’,”叁”},{‘4’,”肆”},{‘5’,”伍”},{‘6’,”陆”},{‘7’,”柒”},{‘8’,”捌”},{‘9’,”玖”},
       {‘S’,”拾”},{‘B’,”佰”},{‘Q’,”仟”},{‘W’,”萬”},{‘Y’,”亿”},
       {‘￥’,”人民币”},{‘-‘,”负”},{‘.’,”圆”},{‘J’,”角”},{‘F’,”分”},{‘Z’,”整”}
   };
   for(inti=0;i<process.Length;i++){
       result.Append(translatorDic[process[i]]);
   }
   #endregion

   returnresult.ToString();
}

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