遗产问题 [英] inheritence question

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问题描述

大家好,


如果我从派生类构造函数中调用基类,那么

基类构造函数在调用派生类之前执行

构造函数? :


public someclass(s​​omeparam foo):base(foo)

解决方案

基类构造函数在派生类构造函数之前总是被调用。


WhiteWizard

又名Gandalf

MCSD.NET,MCAD,MCT

" ^ MisterJingo ^"写道:


大家好,


如果我从派生类构造函数调用基类,是

基类构造函数在调用派生类之前执行

构造函数? :


public someclass(s​​omeparam foo):base(foo)








无论如何它很容易测试:

A级{

string s;

A(字符串s){this.s = s;}

}

B级:A {

B(字符串s):base(s)

{

Console.Write(s);

}

}


-

-

Ignacio Machin,

ignacio.machin AT dot.state.fl.us

佛罗里达州交通局


" ^ MisterJingo ^" < mi ********* @ gmail.comwrote in message

news:11 ********************* *@m79g2000cwm.googlegr oups.com ...


大家好,


如果我从a调用基类派生类构造函数,是在调用派生类之前执行的

基类构造函数

构造函数? :


public someclass(s​​omeparam foo):base(foo)



你好,^ MisterJingo ^!


MIf我从派生类构造函数调用基类,是在调用派生类之前执行的

Mbase类构造函数

Mconstructor? :


我想下面的代码示例可以回答你的问题


公共类基地

{

public Base()

{

Console.WriteLine(" Base");

}

}

公共类儿童:基地

{

公共儿童():基地()

{

Console.WriteLine(" Child");

}


}

-

问候,Vadym Stetsyak

www: http: //vadmyst.blogspot.com

Hi all,

If I call the base class from a derived classes constructor, is the
base class constructor executed before the calling derived classes
constructor? :

public someclass( someparam foo) : base( foo)

解决方案

The base class constructor is ALWAYS called before a derived class constructor.

WhiteWizard
aka Gandalf
MCSD.NET, MCAD, MCT
"^MisterJingo^" wrote:

Hi all,

If I call the base class from a derived classes constructor, is the
base class constructor executed before the calling derived classes
constructor? :

public someclass( someparam foo) : base( foo)


Hi,

Yes

Anyway It''s very easy to test it:
class A{
string s;
A(string s){this.s = s;}
}
class B:A{
B(string s):base(s)
{
Console.Write(s);
}
}

--
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"^MisterJingo^" <mi*********@gmail.comwrote in message
news:11**********************@m79g2000cwm.googlegr oups.com...

Hi all,

If I call the base class from a derived classes constructor, is the
base class constructor executed before the calling derived classes
constructor? :

public someclass( someparam foo) : base( foo)



Hello, ^MisterJingo^!

MIf I call the base class from a derived classes constructor, is the
Mbase class constructor executed before the calling derived classes
Mconstructor? :

I suppose code sample below can answer your question

public class Base
{
public Base()
{
Console.WriteLine("Base");
}
}
public class Child : Base
{
public Child() : base()
{
Console.WriteLine("Child");
}

}
--
Regards, Vadym Stetsyak
www: http://vadmyst.blogspot.com


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