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
{
????public?partial?class?Form1?:?Form
????{
????????double?temp1?=?-1;????//記錄第一個數字
????????int?pos?=?0;????//存儲計算方式
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????public?void?addNum（int?num）
????????{
????????????textBox1.Text?=?textBox1.Text?+?num.ToString（）;????//在顯示屏中添加數字
????????}
????????private?void?groupBox1_Enter（object?sender?EventArgs?e）
????????{

????????}

????????public?void?checkTextbox（）????//檢查顯示框是否為空
????????{
????????????if?（textBox1.Text?==?“0“）
????????????{
????????????????textBox1.Clear（）;
????????????}
????????}

????????//按鈕1
????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????checkTextbox（）;????//調用自定義方法，檢查顯示框是否為空
???

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????187??2016-07-13?12:48??Calc\Calc\App.config

?????文件??????14336??2016-07-13?14:36??Calc\Calc\bin\Debug\Calc.exe

?????文件????????187??2016-07-13?12:48??Calc\Calc\bin\Debug\Calc.exe.config

?????文件??????36352??2016-07-13?14:36??Calc\Calc\bin\Debug\Calc.pdb

?????文件??????24224??2016-07-13?14:37??Calc\Calc\bin\Debug\Calc.vshost.exe

?????文件????????187??2016-07-13?12:48??Calc\Calc\bin\Debug\Calc.vshost.exe.config

?????文件???????3868??2016-07-13?14:16??Calc\Calc\Calc.csproj

?????文件???????4832??2016-07-13?14:59??Calc\Calc\Form1.cs

?????文件??????13442??2016-07-13?13:55??Calc\Calc\Form1.Designer.cs

?????文件???????5817??2016-07-13?13:55??Calc\Calc\Form1.resx

?????文件????????654??2016-07-13?14:37??Calc\Calc\obj\Debug\Calc.csproj.FileListAbsolute.txt

?????文件????????977??2016-07-13?13:55??Calc\Calc\obj\Debug\Calc.csproj.GenerateResource.Cache

?????文件???????2211??2016-07-13?13:42??Calc\Calc\obj\Debug\Calc.csprojResolveAssemblyReference.cache

?????文件??????14336??2016-07-13?14:36??Calc\Calc\obj\Debug\Calc.exe

?????文件????????180??2016-07-13?14:16??Calc\Calc\obj\Debug\Calc.Form1.resources

?????文件??????36352??2016-07-13?14:36??Calc\Calc\obj\Debug\Calc.pdb

?????文件????????180??2016-07-13?14:16??Calc\Calc\obj\Debug\Calc.Properties.Resources.resources

?????文件????????865??2016-07-13?12:48??Calc\Calc\obj\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????6967??2016-07-13?14:15??Calc\Calc\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件??????????0??2016-07-13?12:48??Calc\Calc\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

?????文件??????????0??2016-07-13?12:48??Calc\Calc\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

?????文件??????????0??2016-07-13?12:48??Calc\Calc\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

?????文件???????1113??2016-07-13?14:36??Calc\Calc\operating.cs

?????文件????????185??2016-07-13?14:59??Calc\Calc\operators.cs

?????文件????????516??2016-07-13?12:48??Calc\Calc\Program.cs

?????文件???????1332??2016-07-13?12:48??Calc\Calc\Properties\AssemblyInfo.cs

?????文件???????2860??2016-07-13?12:48??Calc\Calc\Properties\Resources.Designer.cs

?????文件???????5612??2016-07-13?12:48??Calc\Calc\Properties\Resources.resx

?????文件???????1091??2016-07-13?12:48??Calc\Calc\Properties\Settings.Designer.cs

?????文件????????249??2016-07-13?12:48??Calc\Calc\Properties\Settings.settings

............此處省略14個文件信息