// GET: Foods
public ActionResult Index(UnitOfMass unitOfMass = UnitOfMass.Kilogram, string currencyOfPrice = "MYR")
{
ViewBag.CurrencyOrderByFrequencies = db.CurrencyOrderByFrequencies.OrderByDescending(v => v.Frequency).ThenBy(e => e.CurrencyCode).Select(i => new SelectListItem
{
Text = i.CurrencyCode + " - " + i.FullCurrencyName,
Value = i.CurrencyCode
});
DbSet <Food> foods = db.Foods;
foreach (Food f in foods)
{
if (f.Mass.HasValue)
{
f.Mass = Convert.ToDecimal(f.GetMassInUnit(unitOfMass).Value.ToString("N2"));
f.UnitOfMass = (int)unitOfMass;
}
if (f.Price.HasValue)
{
f.Price = Convert.ToDecimal(f.GetPriceInCurrency(currencyOfPrice).Value.ToString("N2"));
f.CurrencyOfPrice = currencyOfPrice;
}
}
return(View(foods.ToList()));
}
public float?GetMass(UnitOfMass unit)
{
return(unit switch
{
UnitOfMass.kg => Mass / 1000,
UnitOfMass.g => Mass,
UnitOfMass.lbs => Mass * (float)(1 / 453.592),
UnitOfMass.ton => (Mass * (float)(1 / 453.592) * (float)(1 / 2000)),
_ => Mass
});
public decimal?GetMassInUnit(UnitOfMass UnitOfMass)
{
if (Mass.HasValue)
{
if (this.UnitOfMass.Value != (int)UnitOfMass)
{
switch (UnitOfMass)
{
case UnitOfMass.Kilogram:
return((decimal)Mass * (decimal)0.453592);
case UnitOfMass.Pound:
return((decimal)Mass * (decimal)2.204620823516057);
}
}
return(Mass.Value);
}
else
{
return(null);
}
}
