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;

namespace?實驗_5_2
{
????public?partial?class?lblShow?:?Form
????{
????????public?lblShow（）
????????{
????????????InitializeComponent（）;
????????}
????????private?void?disply（Figure?f?string?s）
????????{?label3.Text?=?s?+?“面積為：“?+?f.Area（）;?}
????????private?void???button1_Click（object?sender?EventArgs?e）
????????{
????????????double?radius?=?Convert.ToDouble（textBox1.Text）;
????????????Circle?c?=?new?Circle（radius）;
????????????string?s?=?“圓“;
????????????disply（c?s）;?????????
????????}

????????private?void?button2_Click（object?sender?EventArgs?e）
????????{
????????????double?lg?=?Convert.ToDouble（textBox1.Text）;
????????????double?width?=?Convert.ToDouble（textBox2.Text）;
????????????string?s?=?“矩形“;
????????????Recangle?r?=?new?Recangle（lg?width）;
????????????disply（r?s）;
????????}

????????private?void?button3_Click（object?sender?EventArgs?e）
????????{
????????????double?width?=?Convert.ToDouble（textBox1.Text）;
????????????double?high?=?Convert.ToDouble（textBox2.Text）;
????????????string?s?=?“三角形“;
????????????Triangle?t?=?new?Triangle（high?width）;
????????????disply（t?s）;
????????}
????}
????public?abstract?class?Figure
????{
????????public?abstract?double?Area（）;
????}
????//圓形類派生類
????public?class?Circle?:?Figure
????{
????????double?radius;
????????public?Circle（double?r）
????????{?radius?=?r;?}
????????public?override?double?Area（）
????????{
????????????return?radius?*?radius?*?3.14;
????????}
????}
????//矩形類派生類
????public?class?Recangle?:?Figure
????{
????????double?lg;
????????double?width;
????????public?Recangle（double?l?double?w）
????????{???lg?=?l;
????????????width?=?w;????????}
????????public?override?double?Area（）
????????{????return?lg?*?width;?????}
????}
????public?class?Triangle?:?Figure
????{???double?high;
????????double?width;
????????public?Triangle（double?high?double?width）
????????{???this.high?=?high;
????????????this.width?=?width;????}
????????public?override?double?Area（）
????????{??return?high?*?width?/?2;????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-01-03?14:25??C#實驗\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\
?????文件????????7270??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\Form1.Designer.cs
?????文件????????2312??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\Form1.cs
?????文件????????5817??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\Form1.resx
?????文件?????????493??2015-03-27?16:27??C#實驗\實驗?5-2\實驗?5-2\Program.cs
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\Properties\
?????文件????????1356??2015-03-27?16:20??C#實驗\實驗?5-2\實驗?5-2\Properties\AssemblyInfo.cs
?????文件????????2868??2015-03-27?16:20??C#實驗\實驗?5-2\實驗?5-2\Properties\Resources.Designer.cs
?????文件????????5612??2015-03-27?16:20??C#實驗\實驗?5-2\實驗?5-2\Properties\Resources.resx
?????文件????????1093??2015-03-27?16:20??C#實驗\實驗?5-2\實驗?5-2\Properties\Settings.Designer.cs
?????文件?????????249??2015-03-27?16:20??C#實驗\實驗?5-2\實驗?5-2\Properties\Settings.settings
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\bin\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\bin\Debug\
?????文件???????10752??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\bin\Debug\實驗?5-2.exe
?????文件???????28160??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\bin\Debug\實驗?5-2.pdb
?????文件???????11600??2017-11-06?11:42??C#實驗\實驗?5-2\實驗?5-2\bin\Debug\實驗?5-2.vshost.exe
?????文件?????????490??2010-03-17?22:39??C#實驗\實驗?5-2\實驗?5-2\bin\Debug\實驗?5-2.vshost.exe.manifest
?????目錄???????????0??2018-01-03?14:25??C#實驗\實驗?5-2\實驗?5-2\bin\Release\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\obj\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\obj\x86\
?????目錄???????????0??2018-01-03?14:24??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\
?????文件????????4440??2017-04-20?10:09??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6292??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????506??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件????????1210??2017-11-06?10:05??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\GenerateResource.write.1.tlog
?????文件????????7897??2017-04-20?10:14??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\ResolveAssemblyReference.cache
?????目錄???????????0??2018-01-03?14:25??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\TempPE\
?????文件????????3616??2017-11-06?11:42??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\實驗?5-2.csproj.FileListAbsolute.txt
?????文件?????????975??2015-06-03?13:30??C#實驗\實驗?5-2\實驗?5-2\obj\x86\Debug\實驗?5-2.csproj.GenerateResource.Cache
............此處省略863個文件信息