We'll move on to see how the same effect can be achieved in C#2.0,then C#3.0.
C#1.1 Code using System.Collections;
public class Product
{
string name;
public string Name
{
get { return name; }
}
decimal price;
public decimal Price
{
get { return price; }
}
public Product(string name, decimal price)
{
this.name = name;
this.price = price;
}
public static ArrayList GetSampleProducts()
{
ArrayList list = new ArrayList();
list.Add(new Product("Company", 9.99m));
list.Add(new Product("Assassins", 14.99m));
list.Add(new Product("Frogs", 13.99m));
list.Add(new Product("Sweeney Todd", 10.99m));
return list;
}
public override string ToString()
{
return string.Format("{0}: {1}", name, price);
}
} |
Let's see what C#2.0 can do to improve matter using System.Collections.Generic;
public class Product
{
string name;
public string Name
{
get { return name; }
private set { name = value; }
}
decimal price;
public decimal Price
{
get { return price; }
private set { price = value; }
}
public Product(string name, decimal price)
{
Name = name;
Price = price;
}
public static List<Product> GetSampleProducts()
{
List<Product> list = new List<Product>();
list.Add(new Product("Company", 9.99m));
list.Add(new Product("Assassins", 14.99m));
list.Add(new Product("Frogs", 13.99m));
list.Add(new Product("Sweeney Todd", 10.99m));
return list;
}
public override string ToString()
{
return string.Format("{0}: {1}", name, price);
}
} |
Show how C#3.0 tackles these.
class Product
{
public string Name { get; private set; }
public decimal Price { get; private set; } public Product(string name, decimal price)
{
Name = name;
Price = price;
} Product()
{
} public static List<Product> GetSampleProducts()
{
return new List<Product>
{
new Product { Name="Company", Price = 9.99m },
new Product { Name="Assassins", Price=14.99m },
new Product { Name="Frogs", Price=13.99m },
new Product { Name="Sweeney Todd", Price=10.99m}
};
} public override string ToString()
{
return string.Format("{0}: {1}", Name, Price);
}
} |
