C # collection series (2): Attributes

 

1. Here we mainly demonstrate the inheritance and overwrite of attributes.

2. Understand attributes as methods. In fact, the compiler is to generate attributes.

Example:

UsingSystem;

UsingSystem. Collections. Generic;

UsingSystem. LINQ;

UsingSystem. text;

 

NamespaceNettest

{

 

Public Class Testperpoerty

{

 

Class Derivedclass:Baseclass

{

Private StringName ="Name-derivedclass";

Private StringId ="ID-derivedclass";

 

New Public StringName

{

Get

{

ReturnName;

}

 

// Using "protected" wocould make the set accessor not accessible.

Set

{

Name =Value;

}

}

 

// Using private on the following property hides it in the main class.

// Any assignment to the property will use ID in baseclass.

New Private StringID

{

Get

{

ReturnID;

}

Set

{

Id =Value;

}

}

}

 

 

Class Baseclass

{

Private StringName ="Name-baseclass";

Private StringId ="ID-baseclass";

 

Public StringName

{

Get{ReturnName ;}

Set{}

}

 

Public StringID

{

Get{ReturnID ;}

Set{}

}

}

 

PublicVoidTest ()

{

BaseclassB1 =New Baseclass();

DerivedclassD1 =New Derivedclass();

 

B1.name ="Mary";

D1.name ="John";

 

B1.id ="Mary123";

D1.id ="John123";// The baseclass. ID property is called.

 

System.Console. Writeline ("Base: {0}, {1 }", B1.name, b1.id );

System.Console. Writeline ("Derived: {0}, {1 }", D1.name, d1.id );

 

/*

Output:

Name and ID in the base class: Name-baseclass, ID-baseclass

Name and ID in the derived class: John, ID-baseclass

*

--------------------------------

Note: If you replace the new private string ID with the new Public String ID, the following output is obtained:

Name and ID in the base class: Name-baseclass, ID-baseclass

 

Name and ID in the derived class: John, john123

*/

}

}

 

}