# 阿拉伯数字变换大写

www.MyException.Cn  网友分享于：2013-10-24  浏览：2次

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace LYWJMIS.AssistantClass
{
class ArabConventToCapital
{

/// <summary>
/// 要转换的数字
/// </summary>
private double j;
private string[] NumChineseCharacter = new string[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
public ArabConventToCapital(double m)
{
this.j = m;
}
/// <summary>
/// 判断输入的数字是否大于double类型
/// </summary>
private bool IsNumber
{
get
{
if (j > double.MaxValue || j <= 0)
return false;
else
return true;
}
}
/// <summary>
/// 数字转换成大写汉字主函数
/// </summary>
/// <returns>返回转换后的大写汉字</returns>
public string Convert()
{
string bb = "";
if (IsNumber)
{
string str = j.ToString();
string[] Num = str.Split('.');
if (Num.Length == 1)
{
bb = NumberString(Num[0]) + "元整";
bb = bb.Replace("零零", "零");
}
else
{
bb = NumberString(Num[0]) + "元";
bb += FloatString(Num[1]);
bb = bb.Replace("零零", "零");
}
}
else
{
throw new FormatException("你输入的数字格式不正确或不是数字!");
}
return bb;
}
/// <summary>
/// 小数位转换只支持两位的小数
/// </summary>
/// <param name="Num">转换的小数
/// <returns>小数转换成汉字</returns>
private string FloatString(string Num)
{
string cc = "";
if (Num.Length > 2)
{
throw new FormatException("小数位数过多.");
}
else
{
string bb = ConvertString(Num);
int len = bb.IndexOf("零");
if (len != 0)
{
bb = bb.Replace("零", "");
if (bb.Length == 1)
{
cc = bb.Substring(0, 1) + "角整";
}
else
{
cc = bb.Substring(0, 1) + "角";
cc += bb.Substring(1, 1) + "分";
}
}
else
cc = bb + "分";
}
return cc;
}
/// <summary>
/// 判断数字位数以进行拆分转换
/// </summary>
/// <param name="Num">要进行拆分的数字
/// <returns>转换成的汉字</returns>
private string NumberString(string Num)
{
string bb = "";
if (Num.Length <= 4)
{
bb = Convert4(Num);
}
else if (Num.Length > 4 && Num.Length <= 8)
{
bb = Convert4(Num.Substring(0, Num.Length - 4)) + "万";
bb += Convert4(Num.Substring(Num.Length - 4, 4));
}
else if (Num.Length > 8 && Num.Length <= 12)
{
bb = Convert4(Num.Substring(0, Num.Length - 8)) + "亿";
if (Convert4(Num.Substring(Num.Length - 8, 4)) == "")
if (Convert4(Num.Substring(Num.Length - 4, 4)) != "")
bb += "零";
else
bb += "";
else
bb += Convert4(Num.Substring(Num.Length - 8, 4)) + "万";
bb += Convert4(Num.Substring(Num.Length - 4, 4));
}
return bb;
}
/// <summary>
/// 四位数字的转换
/// </summary>
/// <param name="Num">准备转换的四位数字
/// <returns>转换以后的汉字</returns>
private string Convert4(string Num)
{
string bb = "";
if (Num.Length == 1)
{
bb = ConvertString(Num);
}
else if (Num.Length == 2)
{
bb = ConvertString(Num);
bb = Convert2(bb);
}
else if (Num.Length == 3)
{
bb = ConvertString(Num);
bb = Convert3(bb);
}
else
{
bb = ConvertString(Num);
string cc = "";
string len = bb.Substring(0, 4);
if (len != "零零零零")
{
len = bb.Substring(0, 3);
if (len != "零零零")
{
bb = bb.Replace("零零零", "");
if (bb.Length == 1)
{
bb = bb.Substring(0, 1) + "仟";
}
else
{
if (bb.Substring(0, 1) != "零" && bb.Substring(0, 2) != "零")
cc = bb.Substring(0, 1) + "仟";
else
cc = bb.Substring(0, 1);
bb = cc + Convert3(bb.Substring(1, 3));
}
}
else
{
bb = bb.Replace("零零零", "零");
}
}
else
{
bb = bb.Replace("零零零零", "");
}
}
return bb;
}
/// <summary>
/// 将数字转换成汉字
/// </summary>
/// <param name="Num">需要转换的数字
/// <returns>转换后的汉字</returns>
private string ConvertString(string Num)
{
string bb = "";
for (int i = 0; i < Num.Length; i++)
{
bb += NumChineseCharacter[int.Parse(Num.Substring(i, 1))];
}
return bb;
}
/// <summary>
/// 两位数字的转换
/// </summary>
/// <param name="Num">两位数字
/// <returns>转换后的汉字</returns>
private string Convert2(string Num)
{
string bb = ""; string cc = "";
string len = Num.Substring(0, 1);
if (len != "零")
{
bb = Num.Replace("零", "");
if (bb.Length == 1)
{
cc = bb.Substring(0, 1) + "拾";
}
else
{
cc = bb.Substring(0, 1) + "拾";
cc += bb.Substring(1, 1);
}
}
else
cc = Num;
return cc;
}
/// <summary>
/// 三位数字的转换
/// </summary>
/// <param name="Num">三位数字
/// <returns>转换后的汉字</returns>
private string Convert3(string Num)
{
string bb = ""; string cc = "";
string len = Num.Substring(0, 2);
if (len != "零零")
{
bb = Num.Replace("零零", "");
if (bb.Length == 1)
{
bb = bb.Substring(0, 1) + "佰";
}
else
{
if (bb.Substring(0, 1) != "零")
cc = bb.Substring(0, 1) + "佰";
else
cc = bb.Substring(0, 1);
bb = cc + Convert2(bb.Substring(1, 2));
}
}
else
{
bb = Num.Replace("零零", "零");
}
return bb;
}
}
}