使用C#创建一个计算器

         本文是当初涉猎C#时写的一个小程序，现在已经没有使用这个语言了。不过想说的是：C#确实我见过的最优雅的语言（也许我见过的语言还少，可能还有比她更优雅的语言吧） 。我曾经做过一点Excel和AutoCAD的简单二次开发，使用C#比C++简洁、高效多了。现在就说下这个计算器的设计吧，我还是直接贴代码吧，简洁。

        1、首先创建一个大窗体，然后放置各个空间和文本框。创建的界面如下：

        


       2、编写控件触发函数

      

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 Calculator
{
public partial class Form1 : Form
{
string Operation;

public Form1()
{
InitializeComponent();
}

private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{

}

private void textBox1_TextChanged(object sender, EventArgs e)
{

}

private void button7_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text+button7.Text;

}

private void button8_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text+button8.Text;
}

private void button9_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button9.Text;
}

private void button10_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button10.Text;
}

private void button11_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button11.Text;
}

private void button12_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button12.Text;
}

private void button13_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button13.Text;
}

private void button14_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button14.Text;
}

private void button15_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button15.Text;
}

private void button16_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + button16.Text;
}

private void button1_Click(object sender, EventArgs e)
{
string str;
str= button1.Text;
textBox1.Text = textBox1.Text + str;

Operation = str;
}

private void button2_Click(object sender, EventArgs e)
{
string str;
str = button2.Text;
textBox1.Text = textBox1.Text + str;

Operation = str;
}

private void button3_Click(object sender, EventArgs e)
{
string str;
str = button3.Text;
textBox1.Text = textBox1.Text + str;

Operation = str;
}

private void button4
4000
_Click(object sender, EventArgs e)
{
string str;
str = button4.Text;
textBox1.Text = textBox1.Text + str;

Operation = str;
}

private void button5_Click(object sender, EventArgs e)
{
string str;
str = button5.Text;
string tempStr = textBox1.Text;
textBox1.Text = textBox1.Text + str;
string signal;
signal = Operation;

string numStr1,numStr2;
string[] StrArray = tempStr.Split(char.Parse(signal));
numStr1 = StrArray[0];
numStr2 = StrArray[1];
double num1, num2,result;

num1 = double.Parse(numStr1);
num2 = double.Parse(numStr2);
switch(signal)
{
case "+":
result=num1+num2;
textBox1.Text = textBox1.Text + result.ToString();
break;
case "-":
result=num1-num2;
textBox1.Text = textBox1.Text + result.ToString();
break;
case "*":
result=num1*num2;
textBox1.Text = textBox1.Text + result.ToString();
break;
case "/":
result=num1/num2;
textBox1.Text = textBox1.Text + result.ToString();
break;
}
}

private void button6_Click(object sender, EventArgs e)
{
textBox1.Text = "";
}

private void label1_Click(object sender, EventArgs e)
{

}

private void label2_Click(object sender, EventArgs e)
{

}
}
}

       上面的完整工程我放在这个地方了，网址：http://download.csdn.net/download/lingyunxianhe/9963006