C # Implementation of the "Arabic numerals converted into Chinese capital amount" code

Capital | amount | Convert the following C # code to achieve the ability to convert Arabic numerals into Chinese capital amounts, and Visual Studio.NET 2003 debugging Basic Pass (without rigorous testing, I hope you find errors after contact with the author fanz2000@sohu.com, or directly on the CSDN last post to inform).

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");

The code is as follows:



Author: fanz2000
Email:fanz2000@sohu.com
///
Convert numeric amount main function (including decimal)
///
Numeric string
A string that is converted to a Chinese capital letter 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 point
String[] Splitstr=null; Defines an array of strings separated by a decimal point
Splitstr=str. Split (Ch[0]);//split string by decimal point
if (splitstr. length==1)///Only whole number of parts
return Convertdata (str) + "round whole";
else//has a small number of parts
{
String Rstr;
Rstr=convertdata (splitstr[0]) + "round";//Convert integer parts
Rstr+=convertxiaoshu (splitstr[1]);//Convert decimal parts
return RSTR;
}

}
///
Determines whether a positive numeric string
///
Judgment string
Returns true if it is a number, otherwise returns 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)
///
Integer numeric string that needs to be converted
A string converted to uppercase in Chinese
public string Convertdata (String str)
{
String Tmpstr= "";
String Rstr= "";
int STRLEN=STR. Length;
if (strlen<=4)//number 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
Add the number of two conversions to the back of the link
Rstr= String.Concat (ConvertDigit (TMPSTR) + "Million", RSTR);
Rstr=rstr. Replace ("0 million", "million");
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); four digits to intercept
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;
}
///
Convert number (decimal part)
///
Decimal Part number string that needs to be converted
A string converted to uppercase in Chinese
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 numbers
///
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 numbers
///
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;
}
///
Convert three-bit numbers
///
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) + "Bai";
Rstring+=convertchinese (STR2) + "Pick up";
Rstring+=convertchinese (STR3);
Rstring=rstring. Replace ("0 bai", "0");
Rstring=rstring. Replace ("0 pick Up", "0");
Rstring=rstring. Replace ("00", "0");
Rstring=rstring. Replace ("00", "0");
return rstring;
}
///
Convert two-bit numbers
///
public string Convert2digit (String str)
{
String Str1=str. Substring (0,1);
String Str2=str. Substring (1,1);
String Rstring= "";
Rstring+=convertchinese (STR1) + "Pick up";
Rstring+=convertchinese (STR2);
Rstring=rstring. Replace ("0 pick Up", "0");
Rstring=rstring. Replace ("00", "0");
return rstring;
}
///
Converts a digit to a Chinese capital number
///
public string Convertchinese (String str)
{
"0 One and three Woolu Qi Ba nine thousand million round the whole point"
String Cstr= "";
Switch (STR)
{
Case "0": cstr= "0";
Case "1": cstr= "one";
Case "2": cstr= "II";
Case "3": cstr= "three";
Case "4": cstr= "Restaurant";
Case "5": Cstr= "WU";
Case "6": Cstr= "Lu";
Case "7": cstr= "Qi";
Case "8": cstr= "BA";
Case "9": Cstr= "Nine";
}
return (CSTR);
}