Form1.cs

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

        private void Form1_Load(object sender, EventArgs e)
        {
            listView1.View = View.LargeIcon;
            listView1.Items.Add(new ListViewItem());
            listView1.Items.Add(new ListViewItem());
            listView1.Items.Add(new ListViewItem());
            listView1.Items.Add(new ListViewItem());
            listView1.Items.Add(new ListViewItem());
            listView1.Items.Add(new ListViewItem());
            listView1.Items[0].ImageIndex = 0;
            
          listView1.Items[0].ImageKey = "a";
           listView1.Items[0].Tag = "101";
           listView1.Items[0].Text = "a101";
           listView1.Items[1].ImageIndex = 0;
         listView1.Items[1].Tag = "b";
            listView1.Items[2].ImageIndex = 0;
            listView1.Items[2].Tag = "301";
            listView1.Items[3].ImageIndex = 0;
            listView1.Items[3].Tag = "401";
            listView1.Items[4].ImageIndex = 0;
            listView1.Items[4].Tag = "501";
            listView1.Items[5].ImageIndex = 0;
            listView1.Items[5].Tag = "601";




        }

        private void button1_Click(object sender, EventArgs e)
        {
            listView1.Items[0].ImageIndex = 0;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            listView1.Items[0].ImageIndex = 1;
        }
        private void listView1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (listView1.SelectedItems.Count != 0)