C#将科学计数法转换为普通数字

  public static void Convert(string a, out double result)
        {
            result = -1;
            if (a.ToUpper().Contains("E"))
            {
                double b = double.Parse(a.ToUpper().Split('E')[0].ToString());//整数部分
                double c = double.Parse(a.ToUpper().Split('E')[1].ToString());//指数部分
                result = b * Math.Pow(10, c);
            }
            else
            {
                result = double.Parse(a);
            }
        }