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!

  /// <summary>
  /// 金额转为大写金额
  /// </summary>
  public class moneyconvertchinese
  {
    /// <summary>
    /// 金额转为大写金额
    /// </summary>
    /// <param name="lowermoney"></param>
    /// <returns></returns>
    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 
{ 
/// <summary> 
/// 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 
/// </summary> 
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<x.length;i++) 
 ret += tonum(x[i]); 
 return ret; 
 } 

 public string numtochn(string x) 
 { 
 if (x.length==0) 
 return ""; 
 string ret=""; 
 if (x[0]=='-') 
 { 
 ret="负"; 
 x=x.remove(0,1); 
 } 
 if (x[0].tostring()==".") 
 x="0"+x; 
 if (x[x.length-1].tostring()==".") 
 x=x.remove(x.length-1,1); 
 if (x.indexof(".")>-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) 
 { 
 /* 
 system.console.writeline("hello, the world!"); 
 
 system.console.writeline("my love!"); 

 classtest ct = new classtest(); 
   system.console.writeline(ct.get_str()); 
 */ 
 
 /* 
 // 重载运算符 
   myvector v1 = new myvector(5, 12); 
 myvector v2 = new myvector(4, 3); 
 myvector v3 = new myvector(); 
 v3 = v1 + v2; 
 system.console.writeline("{0}测试一下", v3.length); 
 */ 

 // 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)); 
 } 
 } 
} 
}