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Examples of inheritance and polymorphism for asp.net beginners (1)

Source: Internet
Author: User
Tags definition class definition inheritance tostring
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Asp.net| Beginners | Inherit I learn asp.net soon, with the C # write code, in learning C # found many beginners to inheritance and polymorphism is not a special understanding, so this example, I hope to help you, examples are very simple


  


Paging File testprofileclass2.aspx


<%@ Page language= "C #" contenttype= "text/html" responseencoding= "gb2312" src= "Profile2.cs"%>


<%@ Import namespace= "Shai"%>


<html>


<head>


<style>


div{font:arial, Helvetica, Sans-serif;


Background-color: #cccccc;


Border-color:black;


border-width:1;


Border-style:solid;


padding:10,10,10,10;


  }


</style>


<script language= "C #" runat= "Server" >


public void Page_Load (Object Sender,eventargs e)


  {


Profile profiles = new profile ();


message. InnerHtml + = "<u>profile class</u><br>";


message. InnerHtml + + "Firstname:" +profile.getfirstname () + "<br>";


message. InnerHtml + + "Lastname:" +profile.getlastname () + "<br>";


message. InnerHtml + + "Phone:" +profile.getphonenumber () + "<br><br>";


  


Profile.save ();


  


extendedprofile extendedprofile = new Extendedprofile ();


message. InnerHtml + = "<u>extendedprofile class</u></br>";


message. InnerHtml + + "Firstname:" +profile.getfirstname () + "<br>";


Message. InnerHtml + + "Lastname:" +profile.getlastname () + "<br>";


message. InnerHtml + + "Phone:" +extendedprofile.getphonenumber () + "<br>";


message. InnerHtml + + "Address1:" +extendedprofile.getaddress1 () + "<br>";


message. InnerHtml + + "Address2:" +extendedprofile.getaddress2 () + "<br>";


message. InnerHtml + + "City:" +extendedprofile.getcity () + "<br>";


message. InnerHtml + + "state:" +extendedprofile.getstate () + "<br>";


message. InnerHtml + + "Postal:" +extendedprofile.getpostal () + "<br>";


message. InnerHtml + + "Description:" +extendedprofile.getdescription () + "<br>";


  


Extendedprofile.save ();


  }


</script>


<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">


<title></title>


</head>


<body style= "font:arial, Helvetica, Sans-serif" >


<b><h3> Simple inheritance/polymorphism example </h3></b><br><br>


Object Output:<br>


<br>


<div id= "message" runat= "Server"/>


</body>


</html>


  


  


class definition file Profile2.cs


using System;


using System.IO;


using System.Xml;


namespace Shai//namespace Shai


  {


Interface Isavedata//defines an interface Isavedata, which is inherited as the base class of profile, and can be
because of its polymorphic nature

{//Different classes call the methods, and modify the


void Save ();


   }


  


public class Profile:isavedata//Definition class profile


   {


protected string _FirstName; It contains three properties, namely _FirstName, _lastname, PhoneNumber


protected string _lastname;


protected string _PhoneNumber;


  


Public Profile ()//defines the initial value for the property


   {


_firstname = "Saidy";


_lastname = "Chen";


_PhoneNumber = "(010) 88716990";


   }


  


public String Getphonenumber ()//profile method in class Getphonenumber ()


   {


return _phonenumber;


   }


public virtual void Setphonenumber (string phonenumber)


   {


_phonenumber = PhoneNumber;


   }


  


public String Getfirstname ()//profile method in Class Getfirstname ()


   {


return _firstname;


   }


public void Setfirstname (string firstname)


   {


_firstname = FirstName;


   }


  


public String Getlastname ()//profile method in Class Getlastname ()


   {


return _lastname;


   }


public void Setlastname (string lastname)


   {


_lastname = LastName;


   }


  


public virtual void Save ()//Call the Save () method of the Isavedata interface


   {


//Save data as Text Format


FileStream fs = new FileStream ("D:\\myweb2\\profile2.txt", filemode.create,fileaccess.write);


StreamWriter sw = new StreamWriter (FS);


SW. WriteLine ("Firstname:" +_firstname.) ToString ());


SW. WriteLine ("Lastname:" +_lastname.) ToString ());


SW. WriteLine ("Phone:" +_phonenumber.) ToString ());


SW. Flush ();


SW. Close ();


FS. Close ();


   }


  }





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Related Keywords:
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