form1.cs

Visual C#2005程序设计教程

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WinApp4_6加_减_乘_除
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int a=int.Parse(txtA.Text);
            int b=int.Parse(txtB.Text);
            if (radAdd.Checked)
                lblResult.Text = "两个数的和为：" + (a + b);
            if (radSub.Checked)
                lblResult.Text = "两个数的差为：" + (a - b);
            if (radMult.Checked)
                lblResult.Text = "两个数的积为：" + (a * b);
            if (radDiv.Checked)
                if(b==0)
                {
                    MessageBox.Show("0不能作除数！");
                }
                else
                {
                    double result=a/b;
                    lblResult.Text = "整数1除以整数2的商为：" + result;
                }
        }
    }
}