c# 金额转汉字

        /// <summary>
        /// decimal 转换中文大写
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public static string ToRMB(this decimal val)
        {

            var arr = "零壹贰叁肆伍陆柒捌玖分角圆拾佰仟万拾佰仟亿佰仟".ToList();

            var output = string.Join("", val.ToString("f2").Where(x => x != '.').Reverse().Select((x, i) => $"{arr[Convert.ToInt32(x.ToString())]}{arr[i + 10]}").Reverse());

            "零[仟|佰|拾|角|分],零;零+,零;零([圆|万|亿]),$1;圆$,圆整".Split(';').Select(x => x.Split(',')).ToList().ForEach(x => output = Regex.Replace(output, x[0], x[1]));

            return output;

        }