C#中将double类型变量去除小数点后的0并加上千分符如何实现？


   double m = 1234222.010;
   string s1 = FormatValue(Convert.ToDecimal(m.ToString("0")));网上的 方法： private string FormatValue(decimal value)
        {
            StringBuilder sb = new StringBuilder();            string sValue = value.ToString();            List<string> list = new List<string>();            string temp = sValue;            bool includeFloat = sValue.LastIndexOf(".") != -1;            if (includeFloat)
            {
                //temp = temp.Substring(0, sP);
                temp = ((int)value).ToString();
            }            int templength = temp.Length;            if (temp.Length > 3)
            {
                while (templength > 3)
                {
                    list.Add(temp.Substring(templength - 3, 3));
                    templength -= 3;
                }                //最前面的添加进来
                list.Add(temp.Substring(0, temp.Length - list.Count * 3));                for (int i = list.Count - 1; i > 0; i--)
                {
                    sb.Append(list[i] + ",");
                }
                sb.Append(list[0]);                if (includeFloat)
                {
                    sb.Append(sValue.Substring(sValue.LastIndexOf(".")));
                }
            }
            else
            {
                return sValue;
            }
            return sb.ToString();
        }