ASP.Net/Language Basics/Class Inheritance

Материал из .Net Framework эксперт
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Inherit a Class (C#)

<%@ Page Language="C#" %>
<script runat="server">
    public class Animal {
    
       private int legs;
       private string  bodyHair;
    
       public int Legs {
         get {
           return legs;
         }
         set {
           legs = value;
         }
       }
    
       public string  BodyHair {
         get {
           return bodyHair;
         }
         set {
           bodyHair = value;
         }
       }
    
       public string  Walk() {
         return "I"m walking on " + legs + " legs";
       }
    
    }
    
    public class Dog : Animal {
    
       public Dog() {
         Legs = 4;
       }
    
       public string  Bark() {
         return "Woof";
       }
    
       public string  Bite() {
         return "Chomp Chomp";
       }
    
       public string  Wag() {
         return "Wag Wag";
       }
    }
    
    public class Person : Animal {
    
       public Person() {
         Legs = 2;
       }
    
       public string  Talk() {
         return "yadda yadda yadda";
       }
    }
    
    void Page_Load(object Sender, EventArgs E) {
    
       Dog d = new Dog();
       Response.Write(d.Walk());
       Response.Write("<br />");
       Response.Write(d.Bark());
       Response.Write("<br />");
    
       Person  p = new Person();
       Response.Write(p.Walk());
    }
</script>
<html>
<head>
</head>
<body>
</body>
</html>



Inherits class (C#)

<%@ page Language="c#" runat="server" %>
<script runat="server">
  public class ScientificCalculator : Calculator
  {
    public void SquareRoot()
    {
      double root = Math.Sqrt(CurrentValue);
      Clear();
      Add(root);
    }
  }
  public class Calculator
  {
    private double currentValue;
    public double CurrentValue
    {
      get 
      {
        return currentValue;
      }
    }
    public void Add(double addValue)
    {
      currentValue += addValue;
    }
    public void Subtract(double subValue)
    {
      currentValue -= subValue;
    }
    public void Multiply(double multValue)
    {
      currentValue *= multValue;
    }
    public void Divide(double divValue)
    {
      currentValue /= divValue;
    }
    public void Clear()
    {
      currentValue = 0;
    }
 }
  void Page_Load() 
  {
    ScientificCalculator MyCalc = new ScientificCalculator();
    Response.Write("<b>Created a new ScientificCalculator object.</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.Add(23);
    Response.Write("<br/><b>Added 23 - MyCalc.Add(23)</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.Subtract(7);
    Response.Write("<br/><b>Subtracted 7 - MyCalc.Subtract(7)</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.Multiply(3);
    Response.Write("<br/><b>Multiplied by 3 - MyCalc.Multiply(3)</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.Divide(4);
    Response.Write("<br/><b>Divided by 4 - MyCalc.Divide(4)</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.SquareRoot();
    Response.Write("<br/><b>Square root - MyCalc.SquareRoot()</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
    MyCalc.Clear();
    Response.Write("<br/><b>Cleared - MyCalc.Clear()</b><br/>");
    Response.Write("Current Value = " + MyCalc.CurrentValue);
  }
</script>



Inherits class (VB.net)

<%@ page language="vb" runat="server" %>
<script runat="server">
  Public Class ScientificCalculator : Inherits Calculator
    Public Sub SquareRoot()
      Dim root As Double
      Dim current As Double = MyBase.CurrentValue
      root = Math.Sqrt(current)
      MyBase.Clear()
      MyBase.Add(root)
    End Sub
  End Class
  Public Class Calculator
    Private _current As Double
    
    Public ReadOnly Property CurrentValue As Double
      Get
        Return _current
      End Get
    End Property
    
    Public Sub Add(addValue As Double)
      _current += addValue
    End Sub
    Public Sub Subtract(addValue As Double)
      _current -= addValue
    End Sub
    Public Sub Multiply(addValue As Double)
      _current *= addValue
    End Sub
    Public Sub Divide(addValue As Double)
      _current /= addValue
    End Sub
    Public Sub Clear()
      _current = 0
    End Sub
    
  End Class
  Sub Page_Load()
    Dim MyCalc As New ScientificCalculator()
    Response.Write("<b>Created a new ScientificCalculator object.</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    MyCalc.Add(23)
    Response.Write("<br/><b>Added 23 - MyCalc.Add(23)</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    MyCalc.Subtract(7)
    Response.Write("<br/><b>Subtracted 7 - MyCalc.Subtract(7)</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    
    MyCalc.Multiply(3)
    Response.Write("<br/><b>Multiplied by 3 - MyCalc.Multiply(3)</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    MyCalc.Divide(4)
    Response.Write("<br/><b>Divided by 4 - MyCalc.Divide(4)</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    MyCalc.SquareRoot()
    Response.Write("<br/><b>Square root - MyCalc.SquareRoot()</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
    MyCalc.Clear()
    Response.Write("<br/><b>Cleared - MyCalc.Clear()</b><br/>")
    Response.Write("Current Value = " & MyCalc.CurrentValue)
  End Sub
</script>
Источник — «http://nfex.ru/index.php?title=ASP.Net/Language_Basics/Class_Inheritance&oldid=2236»