[c#] Find number of decimal places in decimal value regardless of culture

I suggest using this method :

    public static int GetNumberOfDecimalPlaces(decimal value, int maxNumber)
    {
        if (maxNumber == 0)
            return 0;

        if (maxNumber > 28)
            maxNumber = 28;

        bool isEqual = false;
        int placeCount = maxNumber;
        while (placeCount > 0)
        {
            decimal vl = Math.Round(value, placeCount - 1);
            decimal vh = Math.Round(value, placeCount);
            isEqual = (vl == vh);

            if (isEqual == false)
                break;

            placeCount--;
        }
        return Math.Min(placeCount, maxNumber); 
    }