public static T GetCar <T>(string carName) where T : ICar
{
ICar objCar = default(T);
if (typeof(T) == typeof(SmallCar))
{
objCar = new SmallCar {
CarName = carName
};
}
else if (typeof(T) == typeof(MediumCar))
{
objCar = new MediumCar {
CarName = carName
};
}
return((T)objCar);
}
/// <summary>
/// Get Emission by using Factory Design Pattern
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public double GetEmission(string value)
{
ITransport transport = null;
//split user input string, as it contains '-'
var split = value.Split('-');
if (split.Length >= 1)
{
//Convert first element of splitted string into
//TransportationCategoryEnum type
TransportationCategoryEnum transportEnum;
if (Enum.TryParse(split[0], out transportEnum))
{
//Create trasport object at runtime (Factory desing pattern)
switch (transportEnum)
{
case TransportationCategoryEnum.train:
transport = new Train();
break;
case TransportationCategoryEnum.bus:
transport = new Bus();
break;
case TransportationCategoryEnum.medium:
transport = new MediumCar();
break;
case TransportationCategoryEnum.small:
transport = new SmallCar();
break;
case TransportationCategoryEnum.large:
transport = new LargeCar();
break;
}
}
}
return(getEmissionFromTransportType(value, transport));
}
public static void UseCar()
{
ICarBuilder luxuryCar = new LuxuryCar();
ICarBuilder mediumCar = new MediumCar();
ICarBuilder economyCar = new EconomyCar();
Console.WriteLine("Car Components");
Console.WriteLine("1. Luxury Cars");
Console.WriteLine("2. Medium");
Console.WriteLine("3. Economy Cars");
CarBuilderDirector builder = new CarBuilderDirector();
if (Console.ReadKey().KeyChar.ToString() == "1")
{
builder.Constructor(luxuryCar);
luxuryCar.GetParts().ShowAllThePartsInCar();
}
else if (Console.ReadKey().KeyChar.ToString() == "2")
{
builder.Constructor(mediumCar);
mediumCar.GetParts().ShowAllThePartsInCar();
}
else if(Console.ReadKey().KeyChar.ToString() == "3") {
builder.Constructor(economyCar);
mediumCar.GetParts().ShowAllThePartsInCar();
}
}
