C#中数字转变成大写的类

票据打印，财务等常用大写数字．很不错，推荐给大家.

 

  #region 功能描述：静态成员 数字转变成大写 /// <summary> /// 功能描述：数字转变成大写 /// </summary> /// <param name="numstr">传入数字</param> /// <returns></returns> public string ConvertToCn(string numstr) { decimal num = 0; if (decimal.TryParse(numstr, out num)) { return ConvertToCn(num); } else { return numstr; } } 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;}#endregion