# 将数字转为大写

public static string ConvertToCn(decimal num)
{
string str1 = "零壹贰叁肆伍陆柒捌玖";            //0-9所对应的汉字
string str2 = "万仟佰拾亿仟佰拾万仟佰拾元角分"; //数字位所对应的汉字
string str3 = "";    //从原num值中取出的值
string str4 = "";    //数字的字符串形式
string str5 = "";  //人民币大写金额形式
int i;    //循环变量
int j;    //num的值乘以100的字符串长度
string ch1 = "";    //数字的汉语读法
string ch2 = "";    //数字位的汉字读法
int nzero = 0;  //用来计算连续的零值是几个
int temp;            //从原num值中取出的值
num = Math.Round(Math.Abs(num), 2);    //将num取绝对值并四舍五入取2位小数
str4 = ((long)(num * 100)).ToString();        //将num乘100并转换成字符串形式
j = str4.Length;      //找出最高位
if (j > 15) { return "溢出"; }
str2 = str2.Substring(15 - j);   //取出对应位数的str2的值。如：200.55,j为5所以str2=佰拾元角分
//循环取出每一位需要转换的值
for (i = 0; i < j; i++)
{
str3 = str4.Substring(i, 1);          //取出需转换的某一位的值
temp = Convert.ToInt32(str3);      //转换为数字
if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
{
//当所取位数不为元、万、亿、万亿上的数字时
if (str3 == "0")
{
ch1 = "";
ch2 = "";
nzero = nzero + 1;
}
else
{
if (str3 != "0" && nzero != 0)
{
ch1 = "零" + str1.Substring(temp * 1, 1);
ch2 = str2.Substring(i, 1);
nzero = 0;
}
else
{
ch1 = str1.Substring(temp * 1, 1);
ch2 = str2.Substring(i, 1);
nzero = 0;
}
}
}
else
{
//该位是万亿，亿，万，元位等关键位
if (str3 != "0" && nzero != 0)
{
ch1 = "零" + str1.Substring(temp * 1, 1);
ch2 = str2.Substring(i, 1);
nzero = 0;
}
else
{
if (str3 != "0" && nzero == 0)
{
ch1 = str1.Substring(temp * 1, 1);
ch2 = str2.Substring(i, 1);
nzero = 0;
}
else
{
if (str3 == "0" && nzero >= 3)
{
ch1 = "";
ch2 = "";
nzero = nzero + 1;
}
else
{
if (j >= 11)
{
ch1 = "";
nzero = nzero + 1;
}
else
{
ch1 = "";
ch2 = str2.Substring(i, 1);
nzero = nzero + 1;
}
}
}
}
}
if (i == (j - 11) || i == (j - 3))
{
//如果该位是亿位或元位，则必须写上
ch2 = str2.Substring(i, 1);
}
str5 = str5 + ch1 + ch2;
if (i == j - 1 && str3 == "0")
{
//最后一位（分）为0时，加上“整”
str5 = str5 + '整';
}
}
if (num == 0)
{
str5 = "零元整";
}
return str5;
}
public static string ConvertToCn(string numstr)
{
decimal num = 0;
if (decimal.TryParse(numstr, out num))
{
return ConvertToCn(num);
}
else
{
return "非数字形式！";
}
}



posted @ 2011-01-12 11:15  快乐的langYa  阅读(391)  评论(0编辑  收藏  举报