IComparable<>,IFormattable,IEnumerable<>接口使用

1 Racer类

[Serializable]
public class Racer : IComparable<Racer>, IFormattable
{

public Racer(string firstName = null, string lastName = null, string country = null,
int starts = 0, int wins = 0, IEnumerable<int> years = null, IEnumerable<string> cars = null)
{
this.FirstName = firstName;
this.LastName = lastName;
this.Country = country;
this.Starts = starts;
this.Wins = wins;
var yearList = new List<int>();
foreach (int year in years)
{
yearList.Add(year);
}
this.Years = yearList.ToArray();

var carList = new List<string>();
foreach (string car in cars)
{
carList.Add(car);
}
this.Cars = carList.ToArray();
}
public string FirstName { get; set; }
public string LastName { get; set; }
public string Country { get; set; }
public int Starts { get; set; }
public int Wins { get; set; }
public int[] Years { get; private set; }
public string[] Cars { get; private set; }

public int CompareTo(Racer r)
{
if (r == null) throw new ArgumentNullException("r");
return this.LastName.CompareTo(r.LastName);
}

public override string ToString()
{
return string.Format("{0} {1}", FirstName, LastName);
}

public string ToString(string format)
{
return ToString(format, null);
}

public string ToString(string format, IFormatProvider formatProvider)
{
switch (format)
{
case "L":
return LastName;
case "F":
return FirstName;
case "C":
return Country;
case "W":
return Wins.ToString();
case "S":
return Starts.ToString();
default:
throw new FormatException(string.Format("format:{0} not supported!", format));
}
}
}

2 Team类

public class Team
{
public Team(string name, params int[] years)
{
this.Name = name;
this.Years = years;
}

private string Name { get; set; }
private int[] Years { get; set; }
}

3 初始化

Racer racer = new Racer("Nino", "Farina", "Italy", 33, 5,
new int[] { 1950 }, new string[] { "Alfa Romeo", "Maserati" });
Team team1 = new Team("Vanwall", 1955);
Team team2 = new Team("Cooper", 1959, 1960);