C#数字转换成大写汉字程序

using System;

using System.Collections.Generic;

using System.Text;

namespace ConsoleApplication1

{

public class Program

{

static void Main(string[] args)

{

System.Console.Write("金额: ");

string s = System.Console.ReadLine();

double m;

try

{

m = double.Parse(s);

Money money = new Money(m);

Console.WriteLine(money.Convert());

}

catch (FormatException ex)

{

System.Console.WriteLine(ex.Message);

}

}

}

public class Money

{

/// <summary>

/// 要转换的数字

/// </summary>

private double j;

/// <summary>

///

/// </summary>

private string[] NumChineseCharacter = new string[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };

public Money(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</param>

/// <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</param>

/// <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</param>

/// <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</param>

/// <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</param>

/// <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</param>

/// <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;

}

}

}