public void AddInstrument(string serialno, double price, InstrumentSpec spec)
{
Instrument instrument = null;
if (spec is GuitarSpec)
{
instrument = new Guitar(serialno, price, (GuitarSpec)spec);
}
if (spec is MandolinSpec)
{
instrument = new Mandolin(serialno, price, (MandolinSpec)spec);
}
_inventory.Add(instrument);
}
static void ShowData(Instrument instrument)
{
if (instrument is Guitar)
{
Guitar guitar = (Guitar)instrument;
Console.WriteLine("\n\tInformation");
Console.WriteLine("\nserial no:" + guitar.SerialNumber + "\nPrice:" + guitar.Price);
}
if (instrument is Mandolin)
{
Mandolin mandolin = (Mandolin)instrument;
Console.WriteLine("\n\tInformation");
Console.WriteLine("\nserial no:" + mandolin.SerialNumber + "\nPrice:" + mandolin.Price);
}
}
public List <Guitar> Search(GuitarSpec searchGuitar)
{
List <Guitar> matchingGuitars = new List <Guitar>();
for (int i = 0; i < _inventory.Count; i++)
{
if (_inventory[i] is Guitar)
{
Guitar G = (Guitar)_inventory[i];
if (G.Specification.matches(searchGuitar))
{
matchingGuitars.Add(G);
}
}
}
return(matchingGuitars);
}