数字金额转大写

C#数字金额转换大写金额

      #region 数字金额转大写
        static string[] unums = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
        static string[] pos = { "拾", "佰", "仟", "万", "亿", "兆" };
        static string[] units = { "元", "角", "分" };
        public static void LowNumberToUpper()
        {
            string[] flag = { "." };
            string intNum = string.Empty;
            string decimalNum = string.Empty;

            Console.Write("请输入小写数字金额：");
            string input = Console.ReadLine();
            try
            {
                input = Convert.ToDouble(input).ToString("#.00");
            }
            catch { }
            //拆分小数部分
            int n = input.IndexOf('.');
            if (n == input.Length - 1)
            {
                intNum = input.Substring(0, n);
            }
            else if (n > 0 && n < input.Length)
            {
                intNum = input.Substring(0, n);
                decimalNum = input.Substring(n + 1);
            }
            else
                intNum = input;

            //处理整数部分
            int wei = intNum.Length;
            int cut = 0;
            string intNumString = string.Empty;
            foreach (char c in intNum)
            {
                intNumString += unums[Convert.ToInt32(c.ToString())];
                cut =1;
                
                if (wei >= 13)
                {
                    intNumString += GetUnit(wei - 12);
                    if (wei == 13){
                        intNumString += pos[5];
                        cut++;
                    }               
                }
                else if (wei >= 9)
                {
                    intNumString += GetUnit(wei - 8);
                    if (wei == 9){
                        intNumString += pos[4];
                        cut++;
                    }
                }
                else if (wei >= 5)
                {
                    intNumString += GetUnit(wei - 4);
                    if (wei == 5){
                        intNumString += pos[3];
                        cut++;
                    }
                }
                else if (wei < 5)
                    intNumString += GetUnit(wei);

                if (c == '0' && wei == 0)
                {
                    intNumString = intNumString.Remove(intNumString.Length - 1);
                }
                if (c == '0' && wei != 0 && intNumString.Substring(intNumString.Length - 2, 1) == unums[0])
                {
                    intNumString = intNumString.Remove(intNumString.Length - cut,1);
                }
                //去重
                if (wei != 0 && intNumString.Substring(intNumString.Length - 2, 1) == intNumString.Substring(intNumString.Length - 1))
                {
                    intNumString = intNumString.Remove(intNumString.Length - 1);
                }
                wei--;
            }            
            if (intNumString.Substring(intNumString.Length - 1) == unums[0])
            {
                intNumString = intNumString.Remove(intNumString.Length - 1);
            }
           
            intNumString += units[0];

            //处理小数部分
            wei = decimalNum.Length;
            string decimalNumString = string.Empty;
            foreach (char c in decimalNum)
            {
                if (c != '0')
                {
                    decimalNumString += unums[Convert.ToInt32(c.ToString())];

                    if (wei >= 2)
                        decimalNumString += units[1];
                    else if (wei >= 1)
                        decimalNumString += units[2];
                }
                wei--;
            }
            if (string.IsNullOrEmpty(decimalNum))
                Console.WriteLine(intNum);
            else
                Console.WriteLine(intNum + "." + decimalNum);
            Console.WriteLine(intNumString + decimalNumString);
        }

        private static string GetUnit(int wei)
        {
            string result = string.Empty;
            if (wei >= 5)
                result = pos[3];
            else if (wei >= 4)
                result = pos[2];
            else if (wei >= 3)
                result = pos[1];
            else if (wei >= 2)
                result = pos[0];
            return result;
        }
        #endregion