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 c7_2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string s1 = textBox1.Text;
            string[] a1 = s1.Split('/');
            label2.Text = "西元" + a1[2] + "年" + a1[0] + "月" + a1[1] + "日";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            string s1 = textBox1.Text;
            string s2 = s1.Replace("/", "-");
            label2.Text = s2;

        }
    }
}