一个小问题,解决马上结帐,在线等...
using System;
using System.Drawing;
namespace _05_01
{
/// <summary>
/// Shapes 的摘要说明。
/// </summary>
public abstract class shape
{
protected Point position;
protected Color color;
protected float linewidth;
protected string name;
public string Name
{
get
{
return name;
}
set
{
name=value;
}
}
public Point Position//shape定位点
{
get
{
return position;
}
set
{
position=value;
}
}
public Color Colro//shape颜色
{
get
{
return color;
}
set
{
color=value;
}
}
public float Linewidth
{
get
{
return linewidth;
}
set
{
linewidth=value;
}
}
public abstract double Area{get;}//面积
public abstract void Draw(Graphics g);//画自己的方法
}
public class Ellipse:shape//椭圆
{
//protected int semiMajorAxis/*长半轴*/,semiMinorAxis;/*短半轴*/
}
}
编辑出错提示:
E:\05-01\Shapes.cs(65): “_05_01.Ellipse”不会实现继承的抽象成员“_05_01.shape.Area.get”
E:\05-01\Shapes.cs(65): “_05_01.Ellipse”不会实现继承的抽象成员“_05_01.shape.Draw(System.Drawing.Graphics)”
------解决方案--------------------在Ellipse实现这两个方法
------解决方案--------------------重载一遍!!!!!!!
public class Ellipse:shape//椭圆
{
//protected int semiMajorAxis/*长半轴*/,semiMinorAxis;/*短半轴*/
public override double Area
{
get
{
return 0;
}
}
public override void Draw(Graphics g)
{
//... 具体代码..
}
}