public class Base1
{
public virtual void f()
{
Console.WriteLine("Base1.f()");
}
}
public class Derived1 : Base1
{
// Hides Base1.f() because 'override' was not specified
public new virtual void f()
{
Console.WriteLine("Derived1.f()");
}
}
public class Derived2 : Derived1
{
// Overrides Derived1.f()
public override void f()
{
Console.WriteLine("Derived2.f()");
// Call base method
base.f();
}
}
class Program
{
static void Main(string[] args)
Base1 ob1 = new Derived1();
ob1.f();
Base1 ob2 = new Derived2();
ob2.f();
Derived1 ob3 = new Derived2();
ob3.f();
Derived2 ob4 = new Derived2();
ob4.f();
}
}
// Calls Derived2.f() because Derived2 overrides Derived1().f()
Derived1 ob3 = new Derived2();
ob3.f();
预计会发生的是
在IT技术方面。Base1 ob2 = new Derived2();
ob2.f();
- 为什么会调用基类函数而不是派生类函数,导致调用了derived2函数。
- .net是否使用虚函数表(vtable)。