How to Add Item to Listview in | C#

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

    private void add_Items_Listview_Click(object sender, EventArgs e)
    {
      string[] row1 = { "item1", "item2", "item3" };
      string[] row2 = { "item11", "item21", "item31" };
      var listViewItem1 = new ListViewItem(row1); ;
      var listViewItem2 = new ListViewItem(row2);
      listView1.Items.Add(listViewItem1);
      listView1.Items.Add(listViewItem2);
    }
    private void add_Items_Listview1_Click(object sender, EventArgs e)
    {
      Pet pet = new Pet() { Name = "cat", Type = "Persian", Age = "2" };
      ListViewItem lvi = new ListViewItem();
      lvi.Text = pet.Name;
      lvi.SubItems.Add(pet.Type);
      lvi.SubItems.Add(pet.Age);
      listView1.Items.Add(lvi);
    }
    class Pet
    {
      public string Name { get; set; }
      public string Type { get; set; }
      public string Age { get; set; }
    }
  }
}