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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;

namespace 长方体
{
    public partial class Form1 : Form
    {
        Cuboid cuboid1 = new Cuboid();
        public Form1()
        {
            
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double len, wid, hi;
            if (Regex.IsMatch(textBox1.Text, "^[0]([.][0-9] )$") || Regex.IsMatch(textBox1.Text, "^[1-9][0-9] ([.][0-9] )$")||Regex.IsMatch(textBox1.Text, "^[1-9][0-9] $"))
              {
                  if (Regex.IsMatch(textBox2.Text, "^[0]([.][0-9] )$") || Regex.IsMatch(textBox2.Text, "^[1-9][0-9] ([.][0-9] )$") || Regex.IsMatch(textBox2.Text, "^[1-9][0-9] $"))
                {
                    if (Regex.IsMatch(textBox3.Text, "^[0]([.][0-9] )$") || Regex.IsMatch(textBox3.Text, "^[1-9][0-9] ([.][0-9] )$") || Regex.IsMatch(textBox3.Text, "^[1-9][0-9] $"))
                    {   len = Convert.ToDouble(textBox1.Text);wid = Convert.ToDouble(textBox2.Text);hi = Convert.ToDouble(textBox3.Text);
                        cuboid1.Length = len;  cuboid1.Width = wid; cuboid1.High = hi;
                        label4.Text = "设置对象成功";
                        button2.Enabled = true; button3.Enabled = true; button4.Enabled = true;
                        textBox1.Enabled = false;textBox2.Enabled = false;textBox3.Enabled = false;
                    }
                    else MessageBox.Show("您输入的长方体的高有误");
                }
                  else MessageBox.Show("您输入的长方体的宽或者其他有误");
            }
            else MessageBox.Show("您输入的长方体的长或者其他有误");}

        private void button2_Click(object sender, EventArgs e)
        {label4.Text = "长方体的长为："   Convert.ToString(cuboid1.Length)   ",宽："   Convert.ToString(cuboid1.Width)   ",高："   Convert.ToString(cuboid1.High);}
         private void button3_Click(object sender, EventArgs e)
        {textBox4.Text = cuboid1.FootPrint(cuboid1.Length, cuboid1.Width).ToString();}
         private void button4_Click(object sender, EventArgs e){
         textBox5.Text = cuboid1.Volume(cuboid1.Length, cuboid1.Width, cuboid1.High).ToString();}
        private void Form1_Load(object sender, EventArgs e){
            button2.Enabled = false;
            button3.Enabled = false;
            button4.Enabled = false;}}}