C#整形计算器.doc

这是一个整形的计算器；运行结果和代码如下：

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 整?形?计?算?器¡Â
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void textBox1_TextChanged(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
textBox3.Clear();
int Num1;
int Num2;
int Result;
Num1 = int.Parse(textBox1.Text);
Num2 = int.Parse(textBox2.Text);

Result = Num1 + Num2;

textBox3.Text = Result+"" ;
textBox1.Clear();
textBox2.Clear();

}

private void button2_Click(object sender, EventArgs e)
{
textBox3.Clear();
int Num1;
int Num2;
int Result;
Num1 = int.Parse(textBox1.Text);
Num2 = int.Parse(textBox2.Text);

Result = Num1 - Num2;

textBox3.Text = Result + "";
textBox1.Clear();
textBox2.Clear();

}

private void button3_Click(object sender, EventArgs e)
{
textBox3.Clear();
int Num1;
int Num2;
int Result;
Num1 = int.Parse(textBox1.Text);
Num2 = int.Parse(textBox2.Text);

Result = Num1 * Num2;

textBox3.Text = Result + "";
textBox1.Clear();
textBox2.Clear();
}

private void button4_Click(object sender, EventArgs e)
{
textBox3.Clear();
int Num1;
int Num2;
int Result;
Num1 = int.Parse(textBox1.Text);
Num2 = int.Parse(textBox2.Text);

Result = Num1 / Num2;
textBox3.Text = Result + "";
textBox1.Clear();
textBox2.Clear();
}
}
}