c# 获取数字的小数位数

/// <summary>

/// 获取小数位数

/// </summary>

/// <param name="decimalV">小数</param>

/// <returns></returns>

public int GetNumberOfDecimalPlaces(double decimalV)

{

    int result = 0;

    string[] temp = decimalV.ToString().Split(new char[] { '.' }, StringSplitOptions.RemoveEmptyEntries);

    if (temp.Length == 2 && temp[1].Length > 0 && !temp[1].ToUpper().Contains("E"))

    {

        int index = temp[1].Length - 1;

        while (temp[1][index] == '0' && index-- > 0) ;

        result = index + 1;

    }

    else

    {

        temp = decimalV.ToString().Split(new char[] { '-' }, StringSplitOptions.RemoveEmptyEntries);

        if (temp.Length == 2 && temp[1].Length > 0)

        {

            result = int.Parse(temp[1]);

        }

        string s = temp[0].Substring(0, temp[0].Length - 1);

        temp = s.Split('.');

        if (temp.Length == 2 && temp[1].Length > 0)

        {

            int index = temp[1].Length - 1;

            while (temp[1][index] == '0' && index-- > 0) ;

            result = result + index + 1;

        }

    }

    return result;

}