/// <summary>
/// 获取小数位数
/// </summary>
/// <param name="decimalV">小数</param>
/// <returns></returns>
public static int GetNumberOfDecimalPlaces(double decimalV)
{
    string[] temp = decimalV.ToString().Split(‘.‘);
    if (temp.Length == 2 && temp[1].Length > 0)
    {
        int index = temp[1].Length - 1;
        while (temp[1][index] == ‘0‘ && index-- > 0) ;
        return index + 1;
    }
    return 0;
}

/// <summary>
/// 获取小数位数
/// </summary>
/// <param name="decimalV">小数</param>
/// <returns></returns>
public static int GetNumberOfDecimalPlaces(decimal decimalV)
{
    string[] temp = decimalV.ToString().Split(‘.‘);
    if (temp.Length == 2 && temp[1].Length > 0)
    {
        int index = temp[1].Length - 1;
        while (temp[1][index] == ‘0‘ && index-- > 0) ;
        return index + 1;
    }
    return 0;
}