类与继承
C# 使用窗口实现交互
1.创建一个圆柱体类:
(1)包含私有字段半径和高,并设置其属性,要求半径和高必须是大于0的数;
(2)包含求表面积和体积的方法;
(3)有无参和有参的构造函数;
(4)包含一个能输出圆柱体信息的方法。
创建一个圆柱体数组,并为数组每个元素赋值,要求输出数组中圆柱体半径、高、表面积和体积。
Form类
namespace Ysa_第三次练习_类与继承
{public partial class Form1 : Form{//实例化圆柱类数组Cylinder[] cylinders = new Cylinder[3];//计数器,统计输入的信息个数int i = 0;public Form1(){InitializeComponent();}//每次点击按钮事件,进行一次圆柱体信息的录入private void button1_Click(object sender, EventArgs e){//接收的信息 圆柱体的半径以及高度double radius = double.Parse(textBox1.Text);double hight = double.Parse(textBox2.Text);//实例化圆柱体,并将参数传入Cylinder c = new Cylinder(radius,hight);//将实例化的圆柱体存入数组cylinders[i] = c;i++;//label1.Text = "初始化第"+(i+1)+"个圆柱体属性";}//private void button2_Click(object sender, EventArgs e){//遍历输出圆柱体数组的信息(借助圆柱体类的方法)foreach (Cylinder n in cylinders){infor.Text += n.Information() + "\n";}}}
}
Cylinder 圆柱类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace Ysa_第三次练习_类与继承
{//圆柱 Cylinderclass Cylinder{private double radius;private double hight;//参数构造器public double R{get { return radius; }set{if (value > 0)radius = value;}}public double H {get { return hight; }set{if (value > 0)hight = value;}}//求表面积和体积的方法public double Biaomianji() {double dmj = radius * radius * Math.PI*2;double cemianji = hight * 2 * Math.PI * radius;return dmj + cemianji;}public double Tiji() {return radius*Math.PI*radius*hight;}//输出圆柱体的信息public string Information(){string x = "圆柱体的半径:"+radius+"高:"+hight+"表面积:"+Biaomianji()+"体积:"+Tiji();return x;}//构造函数(有参和无参)public Cylinder() {}public Cylinder(double r,double h) {if (r > 0 && h > 0){radius = r;hight = h;}else{throw new ArgumentException("半径必须大于0");}}}
}
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