C # Implementing numeric amounts converting uppercase amounts

The code's keynote function is convertsum, and its argument is a string of numeric strings of string type. The method is invoked in ASP.net as follows:

Label1.text=convertsum ("Numeric string");

its code as follows: ///converts the numeric amount main function (including decimals)


　　　　　///


///Numeric String


///converts to a string that is capitalized in Chinese or an error message prompt string


public string Convertsum (String str)


　　　　　{


if (! Ispositvedecimal (str))


return "input is not a positive number!" ";


if (double.parse (str) >999999999999.99)


return "The number is too large to convert, please enter the amount of 1 trillion yuan below";


char[] Ch=new char[1];


Ch[0]=' '; Decimal


string[] Splitstr=null; Defines an array of strings separated by a decimal point


Splitstr=str. Split (Ch[0]);//split string by decimal


if (splitstr. length==1)//Only integer part


return Convertdata (str) + "round whole";


else//has a small number of parts


　　　　　　　 {


string rstr;


Rstr=convertdata (splitstr[0]) + "round";//Convert integer part


Rstr+=convertxiaoshu (splitstr[1]);/Convert decimal parts


return RSTR;


　　　　　　　 }


　　　　　}





　　　　　 ///


///to determine whether a positive numeric string


　　　　　///


///judgment String


///Returns True if it is a number, otherwise 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;


　　　　　}





　　///


Convert number (integer)


///www.bianceng.cn


///Integer numeric string that needs to be converted


///converted to a string in Chinese capital


public string Convertdata (String str)


　　　　　{


string Tmpstr= "";


string Rstr= "";


int Strlen=str. Length;


if (strlen<=4)//digital length is less than four bits


　　　　　　　 {


rstr= convertdigit (str);


　　 }


Else


　　　　　　　 {


if (strlen<=8)//number length is greater than four bits, less than eight bits


　　　　　　　　　　{


Tmpstr=str. Substring (strlen-4,4)//First intercept the last four digits


rstr=convertdigit (TMPSTR)//convert last four digits


Tmpstr=str. Substring (0,strlen-4);/intercept the remaining digits


//The number of two conversions plus the


rstr= String.Concat (ConvertDigit (TMPSTR) + "Million", RSTR);


Rstr=rstr. Replace ("00", "0");


　　　　　　　　　　}


Else


if (strlen<=12)//number length is greater than eight bits, less than 12 bits


　　　　　　　　{


Tmpstr=str. Substring (strlen-4,4)//First intercept the last four digits


rstr=convertdigit (TMPSTR)//convert last four digits


Tmpstr=str. Substring (strlen-8,4), and then intercept four digits


rstr= String.Concat (ConvertDigit (TMPSTR) + "Million", RSTR);


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


rstr= String.Concat (ConvertDigit (TMPSTR) + "billion", Rstr);


Rstr=rstr. Replace ("0 billion", "billion");


Rstr=rstr. Replace ("0 million", "0");


Rstr=rstr. Replace ("00", "0");


Rstr=rstr. Replace ("00", "0");


　　　　　　　　}


　　　　　　　 }


Strlen=rstr. Length;


if (strlen>=2)


　　　　　　　 {


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


　　　　　　　　　　{


case "Bai 0": rstr=rstr. Substring (0,strlen-2) + "Bai"; Break


case "Thousand 0": Rstr=rstr. Substring (0,strlen-2) + "thousand"; Break


case "Zero": Rstr=rstr. Substring (0,strlen-2) + "million";


case "billion zero": Rstr=rstr. Substring (0,strlen-2) + "billion";


　　　　　　　　　　}


　　　　　　　 }


return RSTR;


　　　　　}





　　　　　 ///


///Conversion Number (decimal part)


　　　　　///


///the number of decimal parts that need to be converted


///converted to a string in Chinese capital


public string Convertxiaoshu (String str)


　　　　　{


int Strlen=str. Length;


string rstr;


if (strlen==1)


　　　　　　　 {


Rstr=convertchinese (str) + "angle";


return RSTR;


　　　　　　　 }


Else


　　　　　　　 {


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


Rstr=convertchinese (TMPSTR) + "angle";


Tmpstr=str. Substring (1,1);


Rstr+=convertchinese (TMPSTR) + "min";


Rstr=rstr. Replace ("0 points", "");


Rstr=rstr. Replace ("0 Horns", "");


return RSTR;


　　　　　　　 }


　　　　　}





　　　　　 ///


///Convert Digital


　　　　　///


///converted string (within four digits)


　　　　　///


public string ConvertDigit (String str)


　　　　　{


int Strlen=str. Length;


string Rstr= "";


switch (strlen)


　　　　　　　 {


case 1:rstr=convertchinese (str);


case 2:rstr=convert2digit (str);


case 3:rstr=convert3digit (str);


case 4:rstr=convert4digit (str);


　　　　　　　 }


Rstr=rstr. Replace ("titbits", "Pick up");


Strlen=rstr. Length;


return RSTR;


　　　　　}





　　　　　 ///


///convert four-bit digital


　　　　　///


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) + "thousand";


Rstring+=convertchinese (str2) + "Bai";


Rstring+=convertchinese (STR3) + "Pick up";


Rstring+=convertchinese (STR4);


rstring=rstring. Replace ("0 thousand", "0");


rstring=rstring. Replace ("0 bai", "0");


rstring=rstring. Replace ("0 pick Up", "0");


rstring=rstring. Replace ("00", "0");


rstring=rstring. Replace ("00", "0");


rstring=rstring. Replace ("00", "0");


return rstring;


　　　　　}