处理金额小数点后的零

比较低级，但是使用没问题

 public static decimal DealLoanmoney(string loanmoney)
        {
            if (loanmoney.Contains("."))
            {
                int zhengshu = Convert.ToInt32(loanmoney.Split('.')[0]);
                string weishu = loanmoney.Split('.')[1];
                int i = 0;
                for (int a = weishu.Length - 1; a >= 0; a--)
                {
                    if (weishu[a] != '0')
                    {
                        i = a + 1;
                        break;
                    }
                }
                string ws = weishu.Substring(0, i);
                return Convert.ToDecimal(zhengshu) + Convert.ToDecimal("0." + ws);
            }
            else
            {
                return Convert.ToDecimal(loanmoney);
            }
        }