static void Main(string[] args)
{
Text text = new Text();
// Upcasting - both text and shape refence the same
// object in memory.
Shape shape = text;
// To test the reference
text.Width = 200;
shape.Width = 100;
Console.WriteLine(text.Width); // 100
StreamReader reader = new StreamReader(new MemoryStream());
var list = new ArrayList();
list.Add(1);
list.Add("Joe");
list.Add(new Text());
var anotherList = new List<Shape>();
Shape shape1 = new Text();
// Downcasting - so text1 will have access to all derived class members
Text text1 = (Text)shape;
Console.ReadLine();
}
static void Main(string[] args)
{
// upcasting
Text text = new Text();
Shape shape = text;
text.Width = 200;
shape.Width = 100;
Console.WriteLine(text.Width);
//StreamReader reader = new StreamReader(new MemoryStream());
ArrayList list = new ArrayList();
list.Add(1);
list.Add("Simon");
list.Add(new Text());
// downcasting
Shape shape1 = new Text();
Text text1 = (Text)shape;
}
public static void DownCasting()
{
Shape shape = new Text();
Text text = (Text)shape;
}