使用C#实现阿拉伯数字到大写中文的转换

 先记下来,以备后用!

  /// 

  /// 金额转为大写金额
  /// 
  public class MoneyConvertChinese
  {
    /// 

    /// 金额转为大写金额
    /// 
    /// 
    /// 
    public string MoneyToChinese(string LowerMoney)
    {
      string functionReturnValue = null;
      bool IsNegative = false; // 是否是负数
      if (LowerMoney.Trim().Substring(0, 1) == "-")
      {
 // 是负数则先转为正数
 LowerMoney = LowerMoney.Trim().Remove(0, 1);
 IsNegative = true;
      }
      string strLower = null;
      string strUpart = null;
      string strUpper = null;
      int iTemp = 0;
      // 保留两位小数 123.489→123.49　　123.4→123.4
      LowerMoney = Math.Round(double.Parse(LowerMoney), 2).ToString();
      if (LowerMoney.IndexOf(".") > 0)
      {
 if (LowerMoney.IndexOf(".") == LowerMoney.Length - 2)
 {
   LowerMoney = LowerMoney + "0";
 }
      }
      else
      {
 LowerMoney = LowerMoney + ".00";
      }
      strLower = LowerMoney;
      iTemp = 1;
      strUpper = "";
      while (iTemp <= strLower.Length)
      {
 switch (strLower.Substring(strLower.Length - iTemp, 1))
 {
   case ".":
     strUpart = "圆";
     break;
   case "0":
     strUpart = "零";
     break;
   case "1":
     strUpart = "壹";
     break;
   case "2":
     strUpart = "贰";
     break;
   case "3":
     strUpart = "叁";
     break;
   case "4":
     strUpart = "肆";
     break;
   case "5":
     strUpart = "伍";
     break;
   case "6":
     strUpart = "陆";
     break;
   case "7":
     strUpart = "柒";
     break;
   case "8":
     strUpart = "捌";
     break;
   case "9":
     strUpart = "玖";
     break;
 }

 switch (iTemp)
 {
   case 1:
     strUpart = strUpart + "分";
     break;
   case 2:
     strUpart = strUpart + "角";
     break;
   case 3:
     strUpart = strUpart + "";
     break;
   case 4:
     strUpart = strUpart + "";
     break;
   case 5:
     strUpart = strUpart + "拾";
     break;
   case 6:
     strUpart = strUpart + "佰";
     break;
   case 7:
     strUpart = strUpart + "仟";
     break;
   case 8:
     strUpart = strUpart + "万";
     break;
   case 9:
     strUpart = strUpart + "拾";
     break;
   case 10:
     strUpart = strUpart + "佰";
     break;
   case 11:
     strUpart = strUpart + "仟";
     break;
   case 12:
     strUpart = strUpart + "亿";
     break;
   case 13:
     strUpart = strUpart + "拾";
     break;
   case 14:
     strUpart = strUpart + "佰";
     break;
   case 15:
     strUpart = strUpart + "仟";
     break;
   case 16:
     strUpart = strUpart + "万";
     break;
   default:
     strUpart = strUpart + "";
     break;
 }

 strUpper = strUpart + strUpper;
 iTemp = iTemp + 1;
      }

      strUpper = strUpper.Replace("零拾", "零");
      strUpper = strUpper.Replace("零佰", "零");
      strUpper = strUpper.Replace("零仟", "零");
      strUpper = strUpper.Replace("零零零", "零");
      strUpper = strUpper.Replace("零零", "零");
      strUpper = strUpper.Replace("零角零分", "整");
      strUpper = strUpper.Replace("零分", "整");
      strUpper = strUpper.Replace("零角", "零");
      strUpper = strUpper.Replace("零亿零万零圆", "亿圆");
      strUpper = strUpper.Replace("亿零万零圆", "亿圆");
      strUpper = strUpper.Replace("零亿零万", "亿");
      strUpper = strUpper.Replace("零万零圆", "万圆");
      strUpper = strUpper.Replace("零亿", "亿");
      strUpper = strUpper.Replace("零万", "万");
      strUpper = strUpper.Replace("零圆", "圆");
      strUpper = strUpper.Replace("零零", "零");

      // 对壹圆以下的金额的处理
      if (strUpper.Substring(0, 1) == "圆")
      {
 strUpper = strUpper.Substring(1, strUpper.Length - 1);
      }
      if (strUpper.Substring(0, 1) == "零")
      {
 strUpper = strUpper.Substring(1, strUpper.Length - 1);
      }
      if (strUpper.Substring(0, 1) == "角")
      {
 strUpper = strUpper.Substring(1, strUpper.Length - 1);
      }
      if (strUpper.Substring(0, 1) == "分")
      {
 strUpper = strUpper.Substring(1, strUpper.Length - 1);
      }
      if (strUpper.Substring(0, 1) == "整")
      {
 strUpper = "零圆整";
      }
      functionReturnValue = strUpper;

      if (IsNegative == true)
      {
 return "负" + functionReturnValue;
      }
      else
      {
 return functionReturnValue;
      }
    }
  }

测试代码：

    static void Main(string[] args)
    {
      Console.Write("请输入要转成大写的数字：");
      string str = Console.ReadLine();
      Console.WriteLine("大写：" + new MoneyConvertChinese().MoneyToChinese(str));
      Console.ReadLine();
    }

测试结果：

下面是其它网友的补充：

using System; 

namespace ConsoleApp 
{ 
/// 
 
/// 本类实现阿拉伯数字到大写中文的转换 
/// 该类没有对非法数字进行判别 
/// 请调用NumToChn方法 
/// 
 
public class NumFormat 
{ 
 public NumFormat() 
 { 
 // 
 // TODO: 在此处添加构造函数逻辑 
 // 
 } 
 
 // 转换数字 
 private char Tonum(char x) 
 { 
 string strChnNames="零一二三四五六七八九"; 
 string strNumNames="0123456789"; 
 return strChnNames[strNumNames.IndexOf(x)]; 
 } 
 
 // 转换万以下整数 
 private string ChangeInt(string x) 
 { 
 string[] strArrayLevelNames=new string[4] {"","十","百","千"}; 
 string ret = ""; 
 int i; 
 for (i=x.Length-1;i>=0;i--) 
 if (x[i] == '0') 
  ret = Tonum(x[i]) + ret; 
 else 
  ret = Tonum(x[i]) + strArrayLevelNames[x.Length-1-i] + ret; 
 while ((i=ret.IndexOf("零零"))!=-1) 
 ret=ret.Remove(i, 1); 
 if (ret[ret.Length-1]=='零' && ret.Length>1) 
 ret=ret.Remove(ret.Length-1,1); 
 if (ret.Length>=2 && ret.Substring(0,2)=="一十") 
 ret=ret.Remove(0,1); 
 return ret; 
 } 

 // 转换整数 
 private string ToInt(string x) 
 { 
 int len = x.Length; 
 string ret,temp; 
 if (len<=4) 
 ret = ChangeInt(x); 
 else if (len<=8) 
 { 
 ret = ChangeInt(x.Substring(0,len-4)) + "万"; 
 temp = ChangeInt(x.Substring(len-4,4)); 
 if (temp.IndexOf("千")==-1 && temp!="") 
  ret += "零" + temp; 
 else 
  ret += temp; 
 } 
 else 
 { 
 ret=ChangeInt(x.Substring(0,len-8)) + "亿"; 
 temp=ChangeInt(x.Substring(len-8,4)); 
 if (temp.IndexOf("千")==-1 && temp!="") 
  ret += "零" + temp; 
 else 
  ret += temp; 
 ret += "万"; 
 temp = ChangeInt(x.Substring(len-4,4)); 
 if (temp.IndexOf("千")==-1 && temp!="") 
  ret += "零" + temp; 
 else 
  ret += temp; 
 } 
 int i; 
 if ((i=ret.IndexOf("零万"))!=-1) 
 ret = ret.Remove(i+1,1); 
 while ((i=ret.IndexOf("零零"))!=-1) 
 ret = ret.Remove(i,1); 
 if (ret[ret.Length-1]=='零' && ret.Length>1) 
 ret = ret.Remove(ret.Length-1,1); 
 return ret; 
 } 

 private string ToDecimal(string x) 
 { 
 string ret=""; 
 for (int i=0;i-1) 
 ret += ToInt(x.Substring(0,x.IndexOf(".")))+"点"+ToDecimal(x.Substring(x.IndexOf(".")+1)); 
 else 
 ret += ToInt(x); 
 return ret; 
 } 
} 
}

测试工程

using System; 

namespace ConsoleApp 
{ 
class MainClass 
{ 
 static void Main(string[] args) 
 { 
  
 
  

 // 转换成大写数字 
 NumFormat nf = new NumFormat(); 
 string x; 
 while (true) 
 { 
 Console.Write("X="); 
 x = Console.ReadLine(); 
 if (x == "") break; 
 Console.WriteLine("{0}={1}", x, nf.NumToChn(x)); 
 } 
 } 
} 
}