将数字转换成大写金额

来源：互联网发布：手机象棋软件编辑：程序博客网时间：2024/05/01 03:59

///

/// 转换数字金额主函数（包括小数）

///

/// 数字字符串

/// 转换成中文大写后的字符串或者出错信息提示字符串

public string ConvertSum(string str)

{

if (!IsPositveDecimal(str))

return "输入的不是正数字！";

if (Double.Parse(str) > 999999999999.99)

return "数字太大，无法换算，请输入一万亿元以下的金额";

char[] ch = new char[1];

ch[0] = '.'; //小数点

string[] splitstr = null; //定义按小数点分割后的字符串数组

splitstr = str.Split(ch[0]);//按小数点分割字符串

if (splitstr.Length == 1) //只有整数部分

return ConvertData(str) + "圆整";

else //有小数部分

{

string rstr;

rstr = ConvertData(splitstr[0]) + "圆";//转换整数部分

rstr += ConvertXiaoShu(splitstr[1]);//转换小数部分

return rstr;

}

///

/// 判断是否是正数字字符串

///

/// 判断字符串

/// 如果是数字，返回true，否则返回false

public bool IsPositveDecimal(string str)

{

Decimal d;

try

{

d = Decimal.Parse(str);

}

catch (Exception)

{

return false;

}

if (d > 0)

return true;

else

return false;

}

///

/// 转换数字（整数）

///

/// 需要转换的整数数字字符串

/// 转换成中文大写后的字符串

public string ConvertData(string str)

{

string tmpstr = "";

string rstr = "";

int strlen = str.Length;

if (strlen <= 4)//数字长度小于四位

{

rstr = ConvertDigit(str);

}

else

{

if (strlen <= 8)//数字长度大于四位，小于八位

{

tmpstr = str.Substring(strlen - 4, 4);//先截取最后四位数字

rstr = ConvertDigit(tmpstr);//转换最后四位数字

tmpstr = str.Substring(0, strlen - 4);//截取其余数字

//将两次转换的数字加上萬后相连接

rstr = String.Concat(ConvertDigit(tmpstr) + "萬", rstr);

rstr = rstr.Replace("零萬", "萬");

rstr = rstr.Replace("零零", "零");

}

else

if (strlen <= 12)//数字长度大于八位，小于十二位

{

tmpstr = str.Substring(strlen - 4, 4);//先截取最后四位数字

rstr = ConvertDigit(tmpstr);//转换最后四位数字

tmpstr = str.Substring(strlen - 8, 4);//再截取四位数字

rstr = String.Concat(ConvertDigit(tmpstr) + "萬", rstr);

tmpstr = str.Substring(0, strlen - 8);

rstr = String.Concat(ConvertDigit(tmpstr) + "億", rstr);

rstr = rstr.Replace("零億", "億");

rstr = rstr.Replace("零萬", "萬");

rstr = rstr.Replace("零零", "零");

rstr = rstr.Replace("億萬", "億");

}

strlen = rstr.Length;

if (strlen >= 2)

{

switch (rstr.Substring(strlen - 2, 2))

{

case "佰零": rstr = rstr.Substring(0, strlen - 2) + "佰"; break;

case "仟零": rstr = rstr.Substring(0, strlen - 2) + "仟"; break;

case "萬零": rstr = rstr.Substring(0, strlen - 2) + "萬"; break;

case "億零": rstr = rstr.Substring(0, strlen - 2) + "億"; break;

}

return rstr;

}

///

/// 转换数字（小数部分）

///

/// 需要转换的小数部分数字字符串

/// 转换成中文大写后的字符串

public string ConvertXiaoShu(string str)

{

int strlen = str.Length;

string rstr;

if (strlen == 1)

{

rstr = ConvertChinese(str) + "角整";

return rstr;

}

else

{

string tmpstr = str.Substring(0, 1);

rstr = ConvertChinese(tmpstr) + "角";

tmpstr = str.Substring(1, 1);

rstr += ConvertChinese(tmpstr) + "分";

//rstr = rstr.Replace("零零", "");

rstr = rstr.Replace("零角", "零");

rstr = rstr.Replace("零零分", "整");

rstr = rstr.Replace("零分", "");

return rstr;

}

///

/// 转换数字

///

/// 转换的字符串（四位以内）

///

public string ConvertDigit(string str)

{

int strlen = str.Length;

string rstr = "";

switch (strlen)

{

case 1: rstr = ConvertChinese(str); break;

case 2: rstr = Convert2Digit(str); break;

case 3: rstr = Convert3Digit(str); break;

case 4: rstr = Convert4Digit(str); break;

}

rstr = rstr.Replace("拾零", "拾");

strlen = rstr.Length;

return rstr;

}

///

/// 转换四位数字

///

public string Convert4Digit(string str)

{

string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string str3 = str.Substring(2, 1);

string str4 = str.Substring(3, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "仟";

rstring += ConvertChinese(str2) + "佰";

rstring += ConvertChinese(str3) + "拾";

rstring += ConvertChinese(str4);

rstring = rstring.Replace("零仟", "零");

rstring = rstring.Replace("零佰", "零");

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

return rstring;

}

///

/// 转换三位数字

///

public string Convert3Digit(string str)

{

string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string str3 = str.Substring(2, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "佰";

rstring += ConvertChinese(str2) + "拾";

rstring += ConvertChinese(str3);

rstring = rstring.Replace("零佰", "零");

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

return rstring;

}

///

/// 转换二位数字

///

public string Convert2Digit(string str)

{

string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "拾";

rstring += ConvertChinese(str2);

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

return rstring;

}

///

/// 将一位数字转换成中文大写数字

///

public string ConvertChinese(string str)

{

//"零壹贰叁肆伍陆柒捌玖拾佰仟萬億圆整角分"

string cstr = "";

switch (str)

{

case "0": cstr = "零"; break;

case "1": cstr = "壹"; break;

case "2": cstr = "贰"; break;

case "3": cstr = "叁"; break;

case "4": cstr = "肆"; break;

case "5": cstr = "伍"; break;

case "6": cstr = "陆"; break;

case "7": cstr = "柒"; break;

case "8": cstr = "捌"; break;

case "9": cstr = "玖"; break;

}

return (cstr);

}