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?Ex4._1_Calculator
{
????public?partial?class?Form1?:?Form
????{
????????double?num1=1num2num_addnum_multiply=1num_mulus=0num_divade=0result;
????????string?Operater;
????????bool?b?=?falseb1?=?true;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}
????????public?void?NumClick（string?myNumber）
????????{
????????????b1?=?true;
????????????if?（textBox1.Text?==?“0“?||?b?==?true）
????????????{
????????????????textBox1.Text?=?““;
????????????????textBox1.Text?=?textBox1.Text?+?myNumber;
????????????}
????????????else
????????????{
????????????????textBox1.Text?=?textBox1.Text?+?myNumber;
????????????}
????????????b?=?false;
????????}
????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????textBox1.Text?=?“0“;
????????}

????????private?void?buttonZero_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“0“）;
????????}

????????private?void?buttonOne_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“1“）;
????????}

????????private?void?buttonTwo_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“2“）;
????????}

????????private?void?buttonThree_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“3“）;
????????}

????????private?void?buttonFour_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“4“）;
????????}

????????private?void?buttonFive_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“5“）;
????????}

????????private?void?buttonSix_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“6“）;
????????}

????????private?void?buttonSeven_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“7“）;
????????}

????????private?void?buttonEight_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“8“）;
????????}

????????private?void?buttonNine_Click（object?sender?EventArgs?e）
????????{
????????????NumClick（“9“）;
????????}

????????private?void?buttonDot_Click（object?sender?EventArgs?e）
????????{
????????????if?（textBox1.Text.Contains（“.“）==false）
????????????{
????????????????textBox1.Text?=?textBox1.Text?+?“.“;
????????????}
????????}

????????private?void?buttonC_Click（object?sender?EventArgs?e）
????????{
????????????textBox1.Text?=?“0“;
????????????num1?=?0;
????????????num_add?=?0;
????????????num2?=?0;
????????????num_divade?=?0;
????????????num_multiply?=?0;
????????????num_mulus?=?0;
????????}

????????private?void?buttonDivade_Click（object?sender?EventArgs?e）
????????{
????????????b?=?true;?
????????????if?（b1?==?true）
????????????{
????????????????num1?=?double.Parse（textBox1.Text）;
????????????????if?（num_divade?!=?0）
????????????????{
????????????????????num

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????890??2013-05-04?15:15??Ex4.1?Calculator\Ex4.1?Calculator.sln

????I.A..H.??????8192??2013-05-14?22:59??Ex4.1?Calculator\Ex4.1?Calculator.suo

?????文件???????3692??2013-05-04?15:45??Ex4.1?Calculator\Ex4.1?Calculator\Ex4.1?Calculator.csproj

?????文件???????5926??2013-05-09?17:45??Ex4.1?Calculator\Ex4.1?Calculator\Form1.cs

?????文件??????16365??2013-05-09?17:45??Ex4.1?Calculator\Ex4.1?Calculator\Form1.Designer.cs

?????文件???????5817??2013-05-09?17:45??Ex4.1?Calculator\Ex4.1?Calculator\Form1.resx

?????文件????????498??2013-05-04?15:15??Ex4.1?Calculator\Ex4.1?Calculator\Program.cs

?????文件??????36352??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\bin\Debug\Ex4.1?Calculator.pdb

?????文件??????11600??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\bin\Debug\Ex4.1?Calculator.vshost.exe

?????文件????????490??2010-03-17?22:39??Ex4.1?Calculator\Ex4.1?Calculator\bin\Debug\Ex4.1?Calculator.vshost.exe.manifest

?????文件??????15360??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\bin\Debug\Ex4.1?Calculator.exe

?????文件??????28160??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\bin\Release\Ex4.1?Calculator.pdb

?????文件??????11600??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\bin\Release\Ex4.1?Calculator.vshost.exe

?????文件????????490??2010-03-17?22:39??Ex4.1?Calculator\Ex4.1?Calculator\bin\Release\Ex4.1?Calculator.vshost.exe.manifest

?????文件???????5359??2013-05-09?11:50??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????6322??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件???????3421??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4.1?Calculator.csproj.FileListAbsolute.txt

?????文件???????9040??2013-05-09?12:18??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4.1?Calculator.csprojResolveAssemblyReference.cache

?????文件??????15360??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4.1?Calculator.exe

?????文件??????36352??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4.1?Calculator.pdb

?????文件????????180??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4._1_Calculator.Form1.resources

?????文件????????180??2013-05-09?08:36??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4._1_Calculator.Properties.Resources.resources

?????文件????????300??2013-05-09?09:36??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\GenerateResource.read.1.tlog

?????文件????????738??2013-05-09?09:36??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\GenerateResource.write.1.tlog

?????文件????????975??2013-05-13?19:56??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Debug\Ex4.1?Calculator.csproj.GenerateResource.Cache

?????文件???????6308??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Release\DesignTimeResolveAssemblyReferencesInput.cache

?????文件????????780??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Release\Ex4.1?Calculator.csproj.FileListAbsolute.txt

?????文件????????975??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Release\Ex4.1?Calculator.csproj.GenerateResource.Cache

?????文件??????14848??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Release\Ex4.1?Calculator.exe

?????文件??????28160??2013-05-09?17:41??Ex4.1?Calculator\Ex4.1?Calculator\obj\x86\Release\Ex4.1?Calculator.pdb

............此處省略22個(gè)文件信息