Conversions of Classes (Reference Types) To the Base Class of an Object : cast « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. cast

using System;

public class Base
{
    public virtual void talk()
    {
        Console.WriteLine("Base");
    }
}
public class Derived: Base
{
    public override void talk()
    {
        Console.WriteLine("Derived");
    }
}
public class Test
{
    public static void Main()
    {
        Derived d = new Derived();
        Base b = d;
        
        b.talk();
        Derived d2 = (Derived) b;
        
        object o = d;
        Derived d3 = (Derived) o;
    }
}

Derived