public static long?DecodeQuantity(string text)
{
long result = -1;
text = text.Trim();
double?prefixedValue = ThousandsFormatter.TryParse(text);
if (prefixedValue.HasValue)
{
result = (long)prefixedValue.Value;
}
else if (text.ToLower().Contains("e"))
{
double resultScientific;
if (double.TryParse(text, out resultScientific))
{
result = (long)resultScientific;
}
else
{
return(null);
}
}
else if (!long.TryParse(text, out result))
{
return(null);
}
return((result < 0) ? null : new long?(result));
}