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 WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        string[] strs;

        private void Form1_Load(object sender, EventArgs e)
        {
            //textBox1.ReadOnly = false;//这是 显示，并可以输入，但是输入无效
            //textBox1.Enabled = false;//同下
            button3.Enabled = false;//是显示了，不可以使用点击
            //button3.Visible = false;// 在窗体不显示
            label2.Text = string.Empty;
            panel1.Visible = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            button3.Enabled = true;
            label2.Text = DateTime.Now.ToLocalTime().ToString() ;

        }

        private void button2_Click(object sender, EventArgs e)
        {

            strs = textBox1.Text.Split(' ');

            //判断正确性
            for (int i = 0; i < strs.Length-1; i++)//为什么长度-1，因为有的人身份证最后位是X
            { 
                int temp;
                if (int.TryParse(strs[i], out temp) == false)
                {
                    MessageBox.Show(string.Format("您输入的第{0}组数有误",++i));
                    return;
                }
            }

            listBox1.Items.Clear();//防止多次按确认
            listBox1.Items.Add(string.Format("您的年份是:{0}年",strs[1]));

            listBox1.Items.Add(string.Format("您的生日是：{0}月{1}日",strs[2].Substring(0,2),strs[2].Substring(2,2)));
            textBox1.Clear();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            //判断光标的位置
            if (textBox1.SelectionStart==6)
            {
                textBox1.Text += " ";
                textBox1.SelectionStart = 8;
                return;
            }
            if (textBox1.SelectionStart == 11)
            {
                textBox1.Text += " ";
                textBox1.SelectionStart = 13;
                return;
            }
            if (textBox1.SelectionStart == 16)
            {
                textBox1.Text += " ";
                textBox1.SelectionStart = 18;
                return;
            }
            if (textBox1.SelectionStart == 21)//只能输入21-3（空格）=18位身份证
            {
                e.Handled = true;
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            //未满18岁禁止查看  
            pictureBox1.Image = imageList1.Images[0];
            int i1;
            int i2=int.Parse(strs[1]);
            if (int.TryParse(label2.Text.Substring(0, 4), out i1))
            {
                if ((i1 - i2) >= 18)
                {
                    panel1.Show();
                }
                else
                {
                    MessageBox.Show("你未满18岁，不可以查看","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);
                }
            }

        }
    }
}