小写金额转换成中文大写金额

public static string CmycurD(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 CmycurD(string numstr)

{

try

{

decimal num = Convert.ToDecimal(numstr);

return CmycurD(num);

}

catch

{

return "非数字形式！";

}

}