using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;

namespace?Calc_Study_CS
{
????public?partial?class?Form1?:?Form
????{
????????private?bool?isFirstInput?=?true;???//是否第一次輸入
????????private?string?lastVal=?““;?????????//雙目運算的前一個數
????????private?string?symbol?=?““;?????????//保存?當前運算符合只有雙目
????????private?bool?isCanCalc?=?false;?????//判斷在按下雙目運算符后?是進行計算?還是修改已有的Symbol
????????private?bool?isClr?=?false;?????????//是否在CText有數字的情況下重新輸入;

????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

?????
????????//數字按鈕
????????private?void?NumBtn_Click（object?sender?EventArgs?e）
???????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\.vs\
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\.vs\Calc_Study_CS\
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\.vs\Calc_Study_CS\v14\
?????文件???????44032??2015-11-15?01:26??Calc_Study_CS\.vs\Calc_Study_CS\v14\.suo
?????目錄???????????0??2015-11-15?01:26??Calc_Study_CS\Calc_Study_CS\
?????文件?????????189??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\App.config
?????文件????????3924??2015-10-27?21:16??Calc_Study_CS\Calc_Study_CS\Calc_Study_CS.csproj
?????文件???????23376??2015-11-14?01:53??Calc_Study_CS\Calc_Study_CS\Form1.Designer.cs
?????文件????????8702??2015-11-15?01:26??Calc_Study_CS\Calc_Study_CS\Form1.cs
?????文件????????5817??2015-11-14?01:53??Calc_Study_CS\Calc_Study_CS\Form1.resx
?????文件?????????525??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Program.cs
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\
?????文件????????1352??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\AssemblyInfo.cs
?????文件????????2839??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\Resources.Designer.cs
?????文件????????5612??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\Resources.resx
?????文件????????1100??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\Settings.Designer.cs
?????文件?????????249??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\Properties\Settings.settings
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\bin\
?????目錄???????????0??2015-10-27?23:18??Calc_Study_CS\Calc_Study_CS\bin\Debug\
?????文件???????16896??2015-11-15?00:36??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.exe
?????文件?????????189??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.exe.config
?????文件???????28160??2015-11-15?00:36??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.pdb
?????文件???????22696??2015-11-15?01:27??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.vshost.exe
?????文件?????????189??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.vshost.exe.config
?????文件?????????490??2012-06-06?02:06??Calc_Study_CS\Calc_Study_CS\bin\Debug\Calc_Study_CS.vshost.exe.manifest
?????目錄???????????0??2015-10-27?17:11??Calc_Study_CS\Calc_Study_CS\obj\
?????目錄???????????0??2015-11-14?01:53??Calc_Study_CS\Calc_Study_CS\obj\Debug\
?????文件?????????180??2015-11-14?01:53??Calc_Study_CS\Calc_Study_CS\obj\Debug\Calc_Study_CS.Form1.resources
?????文件?????????180??2015-10-27?23:18??Calc_Study_CS\Calc_Study_CS\obj\Debug\Calc_Study_CS.Properties.Resources.resources
?????文件?????????735??2015-11-15?01:27??Calc_Study_CS\Calc_Study_CS\obj\Debug\Calc_Study_CS.csproj.FileListAbsolute.txt
............此處省略11個文件信息