public static void Main(string[] args)
{
var der1 = new Derived1();
var der2 = new Derived2();
Console.WriteLine("Derived 1: {0}", der1.MyMethod());
Console.WriteLine("Derived 2: {0}", der2.MyMethod());
Console.ReadLine();
}
static void Main(string[] args)
{
Base2 b = new Base2();
b.Execute();
b = new Derived2();
b.Execute();
// Running this code will output Base2.Execute twice.
// If you change the base execute method to be virtual and
// the derived class to override instead of hide the Execute method,
// the code will display Base2.Execute and Derived2.Execute.
// You should try to avoid hiding methods with the new keyword.
Derived2 d = new Derived2();
d.Execute();
b = d;
b.Execute();
Console.ReadLine();
}