課後作業三

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

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            DialogResult rest = MessageBox.Show("是否退出","操作提示",MessageBoxButtons.YesNo,MessageBoxIcon.Question);
            if(rest==DialogResult.Yes){
                this.Close();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            switch(jisuan.Text)
            {
                case "+":
                    double C = Convert.ToDouble(yi.Text) + Convert.ToDouble(er.Text);
                    jieguo.Text = C.ToString();
                    break;
                case "-":
                    double j = Convert.ToDouble(yi.Text) - Convert.ToDouble(er.Text);
                    jieguo.Text = j.ToString();
                    break;
                case "*":
                    double f = Convert.ToDouble(yi.Text) * Convert.ToDouble(er.Text);
                    jieguo.Text = f.ToString();
                    break;
                case "/":
                    double g = Convert.ToDouble(yi.Text) / Convert.ToDouble(er.Text);
                    jieguo.Text = g.ToString();
                    break;
            }
        }



    }
}
 

課後作業五

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


namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        int run = 0;
        int count = 0;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

        private void button2_Click(object sender, EventArgs e)
        {
            if (shuzi.Text.Trim().Equals(string.Empty))
            {
                MessageBox.Show("請輸入數字", "提示", MessageBoxButtons.OK, MessageBoxIcon.Question);
                
            }
            else                                   
            {
                if (Convert.ToInt32(shuzi.Text.Trim())>this.run)
                {
                    MessageBox.Show("大了,再猜!!","提示",MessageBoxButtons.OK,MessageBoxIcon.Question);
                         count++;
                }else if(Convert.ToInt32(shuzi.Text.Trim())<this.run)
                {
                    MessageBox.Show("小了,再猜!!","提示",MessageBoxButtons.OK,MessageBoxIcon.Question);
                    count++;
                }else if(Convert.ToInt32(shuzi.Text.Trim())==this.run)
                {
                    string ent = "恭喜你,猜中了!!一共猜了" + this.run;
                    MessageBox.Show(ent,"提示",MessageBoxButtons.OK,MessageBoxIcon.Question);
                }
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Random r = new Random();
            this.run = r.Next(1,100); 
            this.count = 0;
            shuzi.Text = string.Empty;
        }



    }
}