虚方法
using System;
namespace app{
class MyClass{
public static void Main(string[] args){
B b= new B();
A a= new A();
Console.WriteLine(a.a(13));
Console.WriteLine(b.a(13));
}
}
class A{
int b=1;
public int a(){
return b;
}
public virtual int a( int _b){ //虚方法
return b=_b;
}
}
class B:A{
public override int a (int _b){
return base.a(88);
}
}
}using System; 2
namespace app{ 3
class MyClass{ 4
public static void Main(string[] args){ 5
B b= new B(); 6
A a= new A(); 7
Console.WriteLine(a.a(13)); 8
Console.WriteLine(b.a(13)); 9
} 10
} 11
class A{ 12
int b=1; 13
public int a(){ 14
return b; 15
} 16
public virtual int a( int _b){ //虚方法 17
return b=_b; 18
} 19
} 20
class B:A{ 21
public override int a (int _b){ 22
return base.a(88); 23
} 24
} 25
}
using System;
namespace app{
class MyClass{
public static void Main(string[] args){
B b= new B();
A a= new A();
Console.WriteLine(a.a(13));
Console.WriteLine(b.a(13));
}
}
class A{
int b=1;
public int a(){
return b;
}
public int a( int _b){ //虚方法
return b=_b;
}
}
class B:A{
public new int a (int _b){ //
return base.a(88);
}
}
}using System; 2
namespace app{ 3
class MyClass{ 4
public static void Main(string[] args){ 5
B b= new B(); 6
A a= new A(); 7
Console.WriteLine(a.a(13)); 8
Console.WriteLine(b.a(13)); 9
} 10
} 11
class A{ 12
int b=1; 13
public int a(){ 14
return b; 15
} 16
public int a( int _b){ //虚方法 17
return b=_b; 18
} 19
} 20
class B:A{ 21
public new int a (int _b){ // 22
return base.a(88); 23
} 24
} 25
}
using System;
namespace app{
class MyClass{
public static void Main(string[] args){
B b= new B();
A a= new A();
Console.WriteLine(a.a(13));
Console.WriteLine(b.a(13));
}
}
class A{
int b=1;
public int a(){
return b;
}
public virtual int a( int _b){ //虚方法
return b=_b;
}
}
class B:A{
public override sealed int a (int _b){
return base.a(88);
}
}
class C:B{
public override int a (int _b){ //报错
return base.a(88);
}
}
}using System; 2
namespace app{ 3
class MyClass{ 4
public static void Main(string[] args){ 5
B b= new B(); 6
A a= new A(); 7
Console.WriteLine(a.a(13)); 8
Console.WriteLine(b.a(13)); 9
} 10
} 11
class A{ 12
int b=1; 13
public int a(){ 14
return b; 15
} 16
public virtual int a( int _b){ //虚方法 17
return b=_b; 18
} 19
} 20
class B:A{ 21
public override sealed int a (int _b){ 22
return base.a(88); 23
} 24
} 25
class C:B{ 26
public override int a (int _b){ //报错 27
return base.a(88); 28
} 29
} 30
}
using System;
namespace app {
class MyClass {
public static void Main (string[] args) {
B b = new B ();
A a = new A ();
a.a ();
b.a ();
a = b; //访问基类的方法
a.a ();
}
}
class A {
public void a () { //虚方法
Console.WriteLine ("虚方法！");
}
}
class B : A {
public new void a () {
Console.WriteLine ("新虚方法！");
}
}
}using System; 2
namespace app { 3
class MyClass { 4
public static void Main (string[] args) { 5
B b = new B (); 6
A a = new A (); 7
a.a (); 8
b.a (); 9
a = b; //访问基类的方法 10
a.a (); 11
} 12
} 13
class A { 14
public void a () { //虚方法 15
Console.WriteLine ("虚方法！"); 16
} 17
} 18
class B : A { 19
public new void a () { 20
Console.WriteLine ("新虚方法！"); 21
} 22
} 23
}
using System;
class Dog{
public static void Main(string[] args){
B b = new B();
A a= new A();
b.a();
a.a();
a=b;
a.a();//B类的方法
}
}
class A{
public virtual void a(){
Console.WriteLine("A.a方法");
}
}
class B:A{
public override void a(){
Console.WriteLine("B.a方法");
}
}using System; 2
class Dog{ 3
public static void Main(string[] args){ 4
B b = new B(); 5
A a= new A(); 6
b.a(); 7
a.a(); 8
a=b; 9
a.a();//B类的方法 10
} 11
} 12
class A{ 13
public virtual void a(){ 14
Console.WriteLine("A.a方法"); 15
} 16
} 17
class B:A{ 19
public override void a(){ 20
Console.WriteLine("B.a方法"); 21
} 22
}
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