public static double ConvertVolumeToLiters(double volume, FillupUnits unitOfMeasure)
{
switch (unitOfMeasure)
{
case FillupUnits.ImperialGallons:
return volume * LitersPerImperialGallon;
case FillupUnits.UsGallons:
return volume * LitersPerUsGallon;
case FillupUnits.Litres:
return volume;
default:
throw new ArgumentOutOfRangeException();
}
}
public static MvcHtmlString DisplayQuantityFor(this HtmlHelper helper, double quantity,
FillupUnits unitOfMeasure)
{
return MvcHtmlString.Create(FormatQuantityFor(quantity, unitOfMeasure));
}
public static MvcHtmlString DisplayPricePerUnitFor(this HtmlHelper helper, double pricePerUnit, FillupUnits unitOfMeasure)
{
return MvcHtmlString.Create(FormatPricePerUnitFor(pricePerUnit, unitOfMeasure));
}
public static string FormatQuantityFor(double quantity, FillupUnits unitOfMeasure)
{
double liters = UnitConversionHelper.ConvertVolumeToLiters(quantity, unitOfMeasure);
return string.Format(UnitConversionHelper.UserUnitOfMeasure == FillupUnits.Litres ? "{0:#00.00}{1}" : "{0:#00.000} {1}", UnitConversionHelper.ConvertVolumeToUserUnit(liters), FormatVolumeUnitAbbreviation());
}
public static string FormatPricePerUnitFor(double pricePerUnit, FillupUnits unitOfMeasure)
{
double pricePerLiter = pricePerUnit/UnitConversionHelper.ConvertVolumeToLiters(1, unitOfMeasure);
double pricePerUserUnit = pricePerLiter/UnitConversionHelper.ConvertVolumeToUserUnit(1.0);
return string.Format("{0:C2}/{1}", pricePerUserUnit, FormatVolumeUnitAbbreviation(plural: false));
}
public static void SetUnitsForRegion(RegionInfo regionInfo)
{
var isMetric = regionInfo == null || regionInfo.IsMetric;
UserDistanceUnit = isMetric ? DistanceUnits.Kilometer : DistanceUnits.Mile;
UserUnitOfMeasure = isMetric ? FillupUnits.Litres : FillupUnits.UsGallons;
}