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

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //获取输入的数值
            //试一试这么做行不行
            int Num1;
            int Num2;
            int Num3;
            try
            {
                Num1 = int.Parse(textBox_Num1.Text);
                Num2 = int.Parse(textBox_Num2.Text);
                if (radioButton1.Checked)//判断运算规则，加法
                {
                     Num3 = Num1 + Num2;//计算结果
                }
                else if (radioButton2.Checked)//减法
                {

                    Num3 = Num1 - Num2;//计算结果
                }
                      if (radioButton3.Checked)//判断运算规则，加法
                {
                     Num3 = Num1 * Num2;//计算结果
                }
                 else
                {

                 Num3 = Num1 / Num2;//计算结果
                      }
                  
                     textBox_Num3.Text = Num3.ToString();
            }

            catch //运行出错，则进去catch
            {
                MessageBox.Show("输入数据类型有误，请重新输入");
            }





           

            }
        }
    }