• 人民币大写金额转换C#方法


    方法的代码如下:

     1 /// <summary>
     2 /// 人民币大写
     3 /// </summary>
     4 /// <param name="input">待转换输入</param>
     5 /// <param name="prefix">需要添加人民币前缀</param>
     6 /// <exception cref="ArgumentException" />
     7 /// <returns>转换后的结果</returns>
     8 public static string ToCapital(this string input, bool prefix = false) {
     9 
    10     #region Step1 输入有效性验证
    11 
    12     if (!Regex.IsMatch(input, @"(?<=-|^)d*.?d*$"))
    13         throw new ArgumentException("错误的输入金额!");
    14 
    15     if (Regex.IsMatch(input, @"^d{25,}"))
    16         throw new ArgumentException("输入数据太大无法转换!");
    17 
    18     #endregion
    19 
    20     #region Step2 格式化为中间字符串
    21 
    22     var positionDic = new Dictionary<int, string> {
    23         {0,"F"},{1,"J"},{2,"."},{3,"S"},{4,"B"},{5,"Q"},{6,"W"},{7,"SW"},{8,"BW"},{9,"QW"},
    24         {10,"Y"},{11,"SY"},{12,"BY"},{13,"QY"},{14,"WY"},{15,"SWY"},{16,"BWY"},{17,"QWY"},{18,"YY"},
    25         {19,"SYY"},{20,"BYY"},{21,"QYY"},{22,"WYY"},{23,"SWYY"},{24,"BWYY"},{25,"QWYY"}                
    26     };
    27 
    28     input = Regex.Replace(input, @"^.", "0.");
    29 
    30     var integerPart = Regex.Replace(input, @"^-|..*$", "");
    31     var _matchDecimal = Regex.Match(input, @".d*$", RegexOptions.None);
    32     var decimalPart = Regex.Replace(_matchDecimal.Success ? Convert.ToDouble(_matchDecimal.Value).ToString("0.00") : "00", @"0.", "");
    33 
    34     var processStack = new Stack<string>();
    35     var charsArray = (integerPart + decimalPart).Reverse<char>();
    36     for (int i = 0; i < charsArray.Count(); i++) {
    37         processStack.Push(string.Format("{0}{1}", charsArray.ElementAt(i), positionDic[i]));
    38     }
    39 
    40     //符号处理 keleyi.com
    41     if (Regex.IsMatch(input, "^-", RegexOptions.None)) {
    42         processStack.Push("-");
    43     }
    44     if (prefix) {
    45         processStack.Push("");
    46     }
    47 
    48     var process = string.Empty;
    49     while (processStack.Count > 0) {
    50         process += processStack.Pop();
    51     }
    52     //语义处理模式队列
    53     Queue<Tuple<string, string, MatchEvaluator>> patterns = new Queue<Tuple<string, string, MatchEvaluator>>();
    54     var patternBuilder = new StringBuilder();
    55     for (int i = 3; i < positionDic.Count; i++) {
    56         patternBuilder.AppendFormat("{0}{1}", (i == 3 ? "(0(?:" : "") + positionDic[i], i == positionDic.Count - 1 ? ")+?)+" : "|");
    57     }
    58     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(patternBuilder.ToString(), "0", null));
    59     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"(?:d+(?:QW|BW|SW|W|Q|B|S)?d?YY)+", null, m => m.Value.Replace("YY", "") + "YY"));
    60     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"(?:d+(?:QW|BW|SW|W|Q|B|S)?d?Y)+", null, m => m.Value.Replace("Y", "") + "Y"));
    61     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"(?:d+(?:Q|B|S)?d?W)+", null, m => m.Value.Replace("W", "") + "W"));
    62     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"(?!^)0+.", ".", null));
    63     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"^0.0J|^0.", "", null));
    64     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>("0J|0F", "0", null));
    65     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>("J0?$", "JZ", null));
    66     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@".$|.0+$", ".Z", null));
    67     patterns.Enqueue(Tuple.Create<string, string, MatchEvaluator>(@"^0+$|^[^.]{0}$", "0.Z", null));
    68 
    69     while (patterns.Count > 0) {
    70         var pattern = patterns.Dequeue();
    71         if (pattern.Item3 != null) {
    72             process = Regex.Replace(process, pattern.Item1, pattern.Item3);
    73         }
    74         else {
    75             process = Regex.Replace(process, pattern.Item1, pattern.Item2);
    76         }
    77     }
    78 
    79     #endregion
    80 
    81     #region Step3 翻译中间字符串
    82     StringBuilder result = new StringBuilder();
    83     var translatorDic = new Dictionary<char, string> {
    84         {'0',""},{'1',""},{'2',""},{'3',""},{'4',""},{'5',""},{'6',""},{'7',""},{'8',""},{'9',""},
    85         {'S',""},{'B',""},{'Q',""},{'W',""},{'Y',"亿"},
    86         {'',"人民币"},{'-',""},{'.',""},{'J',""},{'F',""},{'Z',""}
    87     };
    88     for (int i = 0; i < process.Length; i++) {
    89         result.Append(translatorDic[process[i]]);
    90     }
    91     #endregion
    92 
    93     return result.ToString();
    94 }

    http://www.cnblogs.com/roucheng/

    一个人民币大写的扩展方法。感觉还是有点复杂,请朋友们帮忙优化下或是给个思路。

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  • 原文地址:https://www.cnblogs.com/roucheng/p/3459310.html
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