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?Mycalc
{
????public?partial?class?Form1?:?Form
????{
????????private?decimal?_x?=?0?_y?=?0?_result?=?0;
????????private?string?_orperator?=?““;
????????private?int?_orperatorCount?=?0;
????????private?bool?_firstNumberFlag?=?false;//首數字標志用來直接開啟下一個計算式
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?buttonNum1_Click（object?sender?EventArgs?e）
????????{
????????????if?（_firstNumberFlag?==?true）
????????????{
????????????????textBox1.Text?=?“1“;
????????????????_firstNumberFlag?=?false;
????????????}
????????????else
????????????????textBox1.Text?=?textBox1.Text?+?“1“;
????????????textBox1.Focus（）;
????????????textBox1.Select（textBox1.Text.Length?0）;
????????}

????????private?void?buttonNum2_Click（object?se

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-02-27?19:49??Mycalc\
?????目錄???????????0??2019-03-02?18:13??Mycalc\Mycalc\
?????文件?????????908??2019-02-27?19:49??Mycalc\Mycalc.sln
?????文件???????14848??2019-03-02?18:23??Mycalc\Mycalc.suo
?????目錄???????????0??2019-02-27?19:49??Mycalc\Mycalc\bin\
?????目錄???????????0??2019-02-27?21:21??Mycalc\Mycalc\bin\Debug\
?????文件???????18944??2019-03-01?22:05??Mycalc\Mycalc\bin\Debug\Mycalc.exe
?????文件???????36352??2019-03-01?22:05??Mycalc\Mycalc\bin\Debug\Mycalc.pdb
?????文件???????14328??2019-03-02?18:23??Mycalc\Mycalc\bin\Debug\Mycalc.vshost.exe
?????文件?????????490??2018-08-10?13:55??Mycalc\Mycalc\bin\Debug\Mycalc.vshost.exe.manifest
?????文件???????12822??2019-03-02?18:13??Mycalc\Mycalc\Form1.cs
?????文件???????19490??2019-03-02?18:13??Mycalc\Mycalc\Form1.Designer.cs
?????文件????????5814??2019-03-02?18:13??Mycalc\Mycalc\Form1.resx
?????文件????????3758??2019-03-02?18:13??Mycalc\Mycalc\Mycalc.csproj
?????目錄???????????0??2019-02-27?19:49??Mycalc\Mycalc\obj\
?????目錄???????????0??2019-03-01?22:05??Mycalc\Mycalc\obj\Debug\
?????文件?????????829??2019-03-02?18:23??Mycalc\Mycalc\obj\Debug\Mycalc.csproj.FileListAbsolute.txt
?????文件?????????847??2019-03-01?22:05??Mycalc\Mycalc\obj\Debug\Mycalc.csproj.GenerateResource.Cache
?????文件???????18944??2019-03-01?22:05??Mycalc\Mycalc\obj\Debug\Mycalc.exe
?????文件?????????180??2019-03-01?22:05??Mycalc\Mycalc\obj\Debug\Mycalc.Form1.resources
?????文件???????36352??2019-03-01?22:05??Mycalc\Mycalc\obj\Debug\Mycalc.pdb
?????文件?????????180??2019-02-27?21:21??Mycalc\Mycalc\obj\Debug\Mycalc.Properties.Resources.resources
?????目錄???????????0??2019-02-27?19:50??Mycalc\Mycalc\obj\Debug\Refactor\
?????目錄???????????0??2019-02-27?19:49??Mycalc\Mycalc\obj\Debug\TempPE\
?????文件?????????487??2019-02-27?19:49??Mycalc\Mycalc\Program.cs
?????目錄???????????0??2019-02-27?19:49??Mycalc\Mycalc\Properties\
?????文件????????1344??2019-02-27?19:49??Mycalc\Mycalc\Properties\AssemblyInfo.cs
?????文件????????2862??2019-02-27?19:49??Mycalc\Mycalc\Properties\Resources.Designer.cs
?????文件????????5612??2019-02-27?19:49??Mycalc\Mycalc\Properties\Resources.resx
?????文件????????1091??2019-02-27?19:49??Mycalc\Mycalc\Properties\Settings.Designer.cs
?????文件?????????249??2019-02-27?19:49??Mycalc\Mycalc\Properties\Settings.settings
............此處省略0個文件信息